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Mon, 6 Mar 2023 11:22:27 -0600 From: Amit Kumar Mahapatra To: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH V5 02/15] net: Replace all spi->chip_select and spi->cs_gpiod references with function call Date: Mon, 6 Mar 2023 22:50:56 +0530 Message-ID: <20230306172109.595464-3-amit.kumar-mahapatra@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230306172109.595464-1-amit.kumar-mahapatra@amd.com> References: <20230306172109.595464-1-amit.kumar-mahapatra@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM6NAM11FT093:EE_|SN7PR12MB7810:EE_ X-MS-Office365-Filtering-Correlation-Id: 6bf985b3-e298-4ce6-bb72-08db1e676cc0 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17; 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Ip=[165.204.84.17]; Helo=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT093.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN7PR12MB7810 Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org Supporting multi-cs in spi drivers would require the chip_select & cs_gpiod members of struct spi_device to be an array. But changing the type of these members to array would break the spi driver functionality. To make the transition smoother introduced four new APIs to get/set the spi->chip_select & spi->cs_gpiod and replaced all spi->chip_select and spi->cs_gpiod references with get or set API calls. While adding multi-cs support in further patches the chip_select & cs_gpiod members of the spi_device structure would be converted to arrays & the "idx" parameter of the APIs would be used as array index i.e., spi->chip_select[idx] & spi->cs_gpiod[idx] respectively. Signed-off-by: Amit Kumar Mahapatra Reviewed-by: Michal Simek --- drivers/net/ethernet/adi/adin1110.c | 2 +- drivers/net/ethernet/asix/ax88796c_main.c | 2 +- drivers/net/ethernet/davicom/dm9051.c | 2 +- drivers/net/ethernet/qualcomm/qca_debug.c | 2 +- drivers/net/ieee802154/ca8210.c | 2 +- drivers/net/wan/slic_ds26522.c | 2 +- drivers/net/wireless/marvell/libertas/if_spi.c | 2 +- drivers/net/wireless/silabs/wfx/bus_spi.c | 2 +- drivers/net/wireless/st/cw1200/cw1200_spi.c | 2 +- 9 files changed, 9 insertions(+), 9 deletions(-) diff --git a/drivers/net/ethernet/adi/adin1110.c b/drivers/net/ethernet/adi/adin1110.c index 0805f249fff2..aee7a98725ba 100644 --- a/drivers/net/ethernet/adi/adin1110.c +++ b/drivers/net/ethernet/adi/adin1110.c @@ -515,7 +515,7 @@ static int adin1110_register_mdiobus(struct adin1110_priv *priv, return -ENOMEM; snprintf(priv->mii_bus_name, MII_BUS_ID_SIZE, "%s-%u", - priv->cfg->name, priv->spidev->chip_select); + priv->cfg->name, spi_get_chipselect(priv->spidev, 0)); mii_bus->name = priv->mii_bus_name; mii_bus->read = adin1110_mdio_read; diff --git a/drivers/net/ethernet/asix/ax88796c_main.c b/drivers/net/ethernet/asix/ax88796c_main.c index 21376c79f671..e551ffaed20d 100644 --- a/drivers/net/ethernet/asix/ax88796c_main.c +++ b/drivers/net/ethernet/asix/ax88796c_main.c @@ -1006,7 +1006,7 @@ static int ax88796c_probe(struct spi_device *spi) ax_local->mdiobus->parent = &spi->dev; snprintf(ax_local->mdiobus->id, MII_BUS_ID_SIZE, - "ax88796c-%s.%u", dev_name(&spi->dev), spi->chip_select); + "ax88796c-%s.%u", dev_name(&spi->dev), spi_get_chipselect(spi, 0)); ret = devm_mdiobus_register(&spi->dev, ax_local->mdiobus); if (ret < 0) { diff --git a/drivers/net/ethernet/davicom/dm9051.c b/drivers/net/ethernet/davicom/dm9051.c index de7105a84747..70728b2e5f18 100644 --- a/drivers/net/ethernet/davicom/dm9051.c +++ b/drivers/net/ethernet/davicom/dm9051.c @@ -1123,7 +1123,7 @@ static int dm9051_mdio_register(struct board_info *db) db->mdiobus->phy_mask = (u32)~BIT(1); db->mdiobus->parent = &spi->dev; snprintf(db->mdiobus->id, MII_BUS_ID_SIZE, - "dm9051-%s.%u", dev_name(&spi->dev), spi->chip_select); + "dm9051-%s.%u", dev_name(&spi->dev), spi_get_chipselect(spi, 0)); ret = devm_mdiobus_register(&spi->dev, db->mdiobus); if (ret) diff --git a/drivers/net/ethernet/qualcomm/qca_debug.c b/drivers/net/ethernet/qualcomm/qca_debug.c index f62c39544e08..6f2fa2a42770 100644 --- a/drivers/net/ethernet/qualcomm/qca_debug.c +++ b/drivers/net/ethernet/qualcomm/qca_debug.c @@ -119,7 +119,7 @@ qcaspi_info_show(struct seq_file *s, void *what) seq_printf(s, "SPI mode : %x\n", qca->spi_dev->mode); seq_printf(s, "SPI chip select : %u\n", - (unsigned int)qca->spi_dev->chip_select); + (unsigned int)spi_get_chipselect(qca->spi_dev, 0)); seq_printf(s, "SPI legacy mode : %u\n", (unsigned int)qca->legacy_mode); seq_printf(s, "SPI burst length : %u\n", diff --git a/drivers/net/ieee802154/ca8210.c b/drivers/net/ieee802154/ca8210.c index e1a569b99e4a..7093a07141bb 100644 --- a/drivers/net/ieee802154/ca8210.c +++ b/drivers/net/ieee802154/ca8210.c @@ -2967,7 +2967,7 @@ static int ca8210_test_interface_init(struct ca8210_priv *priv) sizeof(node_name), "ca8210@%d_%d", priv->spi->master->bus_num, - priv->spi->chip_select + spi_get_chipselect(priv->spi, 0) ); test->ca8210_dfs_spi_int = debugfs_create_file( diff --git a/drivers/net/wan/slic_ds26522.c b/drivers/net/wan/slic_ds26522.c index 6063552cea9b..8a51cfcff99e 100644 --- a/drivers/net/wan/slic_ds26522.c +++ b/drivers/net/wan/slic_ds26522.c @@ -211,7 +211,7 @@ static int slic_ds26522_probe(struct spi_device *spi) ret = slic_ds26522_init_configure(spi); if (ret == 0) - pr_info("DS26522 cs%d configured\n", spi->chip_select); + pr_info("DS26522 cs%d configured\n", spi_get_chipselect(spi, 0)); return ret; } diff --git a/drivers/net/wireless/marvell/libertas/if_spi.c b/drivers/net/wireless/marvell/libertas/if_spi.c index ff1c7ec8c450..1225fc0e3352 100644 --- a/drivers/net/wireless/marvell/libertas/if_spi.c +++ b/drivers/net/wireless/marvell/libertas/if_spi.c @@ -1051,7 +1051,7 @@ static int if_spi_init_card(struct if_spi_card *card) "spi->max_speed_hz=%d\n", card->card_id, card->card_rev, card->spi->master->bus_num, - card->spi->chip_select, + spi_get_chipselect(card->spi, 0), card->spi->max_speed_hz); err = if_spi_prog_helper_firmware(card, helper); if (err) diff --git a/drivers/net/wireless/silabs/wfx/bus_spi.c b/drivers/net/wireless/silabs/wfx/bus_spi.c index 7fb1afb8ed31..160b90114aad 100644 --- a/drivers/net/wireless/silabs/wfx/bus_spi.c +++ b/drivers/net/wireless/silabs/wfx/bus_spi.c @@ -208,7 +208,7 @@ static int wfx_spi_probe(struct spi_device *func) /* Trace below is also displayed by spi_setup() if compiled with DEBUG */ dev_dbg(&func->dev, "SPI params: CS=%d, mode=%d bits/word=%d speed=%d\n", - func->chip_select, func->mode, func->bits_per_word, func->max_speed_hz); + spi_get_chipselect(func, 0), func->mode, func->bits_per_word, func->max_speed_hz); if (func->bits_per_word != 16 && func->bits_per_word != 8) dev_warn(&func->dev, "unusual bits/word value: %d\n", func->bits_per_word); if (func->max_speed_hz > 50000000) diff --git a/drivers/net/wireless/st/cw1200/cw1200_spi.c b/drivers/net/wireless/st/cw1200/cw1200_spi.c index fe0d220da44d..c82c0688b549 100644 --- a/drivers/net/wireless/st/cw1200/cw1200_spi.c +++ b/drivers/net/wireless/st/cw1200/cw1200_spi.c @@ -378,7 +378,7 @@ static int cw1200_spi_probe(struct spi_device *func) func->mode = SPI_MODE_0; pr_info("cw1200_wlan_spi: Probe called (CS %d M %d BPW %d CLK %d)\n", - func->chip_select, func->mode, func->bits_per_word, + spi_get_chipselect(func, 0), func->mode, func->bits_per_word, func->max_speed_hz); if (cw1200_spi_on(plat_data)) { From patchwork Mon Mar 6 17:20:57 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Mahapatra, Amit Kumar" X-Patchwork-Id: 659643 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 08579C61DA4 for ; Mon, 6 Mar 2023 17:29:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230181AbjCFR3n (ORCPT ); Mon, 6 Mar 2023 12:29:43 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33244 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229971AbjCFR3j (ORCPT ); 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Helo=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT101.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN7PR12MB6981 Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org Supporting multi-cs in spi drivers would require the chip_select & cs_gpiod members of struct spi_device to be an array. But changing the type of these members to array would break the spi driver functionality. To make the transition smoother introduced four new APIs to get/set the spi->chip_select & spi->cs_gpiod and replaced all spi->chip_select and spi->cs_gpiod references with get or set API calls. While adding multi-cs support in further patches the chip_select & cs_gpiod members of the spi_device structure would be converted to arrays & the "idx" parameter of the APIs would be used as array index i.e., spi->chip_select[idx] & spi->cs_gpiod[idx] respectively. Signed-off-by: Amit Kumar Mahapatra Acked-by: Jonathan Cameron Reviewed-by: Michal Simek --- drivers/iio/imu/adis16400.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/imu/adis16400.c b/drivers/iio/imu/adis16400.c index c02fc35dceb4..3eda32e12a53 100644 --- a/drivers/iio/imu/adis16400.c +++ b/drivers/iio/imu/adis16400.c @@ -466,7 +466,7 @@ static int adis16400_initial_setup(struct iio_dev *indio_dev) dev_info(&indio_dev->dev, "%s: prod_id 0x%04x at CS%d (irq %d)\n", indio_dev->name, prod_id, - st->adis.spi->chip_select, st->adis.spi->irq); + spi_get_chipselect(st->adis.spi, 0), st->adis.spi->irq); } /* use high spi speed if possible */ if (st->variant->flags & ADIS16400_HAS_SLOW_MODE) { From patchwork Mon Mar 6 17:21:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Mahapatra, Amit Kumar" X-Patchwork-Id: 659645 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A6E0EC64EC4 for ; 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Helo=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT045.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB8155 Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org Supporting multi-cs in spi drivers would require the chip_select & cs_gpiod members of struct spi_device to be an array. But changing the type of these members to array would break the spi driver functionality. To make the transition smoother introduced four new APIs to get/set the spi->chip_select & spi->cs_gpiod and replaced all spi->chip_select and spi->cs_gpiod references with get or set API calls. While adding multi-cs support in further patches the chip_select & cs_gpiod members of the spi_device structure would be converted to arrays & the "idx" parameter of the APIs would be used as array index i.e., spi->chip_select[idx] & spi->cs_gpiod[idx] respectively. Signed-off-by: Amit Kumar Mahapatra --- arch/powerpc/platforms/83xx/mpc832x_rdb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/platforms/83xx/mpc832x_rdb.c b/arch/powerpc/platforms/83xx/mpc832x_rdb.c index caa96edf0e72..4ab1d48cd229 100644 --- a/arch/powerpc/platforms/83xx/mpc832x_rdb.c +++ b/arch/powerpc/platforms/83xx/mpc832x_rdb.c @@ -144,7 +144,7 @@ static int __init fsl_spi_init(struct spi_board_info *board_infos, static void mpc83xx_spi_cs_control(struct spi_device *spi, bool on) { - pr_debug("%s %d %d\n", __func__, spi->chip_select, on); + pr_debug("%s %d %d\n", __func__, spi_get_chipselect(spi, 0), on); par_io_data_set(3, 13, on); } From patchwork Mon Mar 6 17:21:04 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Mahapatra, Amit Kumar" X-Patchwork-Id: 659644 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B92A0C61DA4 for ; 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Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF0000B8E9.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA0PR12MB4445 Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org In further patches the nor->params references in spi_nor_otp_region_len(nor) & spi_nor_otp_n_regions(nor) macros will be replaced with spi_nor_get_params() API. To make the transition smoother, first converting the macros into static inline functions. Suggested-by: Michal Simek Signed-off-by: Amit Kumar Mahapatra --- drivers/mtd/spi-nor/otp.c | 23 +++++++++++++++++++++-- 1 file changed, 21 insertions(+), 2 deletions(-) diff --git a/drivers/mtd/spi-nor/otp.c b/drivers/mtd/spi-nor/otp.c index 00ab0d2d6d2f..3d75899de303 100644 --- a/drivers/mtd/spi-nor/otp.c +++ b/drivers/mtd/spi-nor/otp.c @@ -11,8 +11,27 @@ #include "core.h" -#define spi_nor_otp_region_len(nor) ((nor)->params->otp.org->len) -#define spi_nor_otp_n_regions(nor) ((nor)->params->otp.org->n_regions) +/** + * spi_nor_otp_region_len() - get size of one OTP region in bytes + * @nor: pointer to 'struct spi_nor' + * + * Return: size of one OTP region in bytes + */ +static inline unsigned int spi_nor_otp_region_len(struct spi_nor *nor) +{ + return nor->params->otp.org->len; +} + +/** + * spi_nor_otp_n_regions() - get number of individual OTP regions + * @nor: pointer to 'struct spi_nor' + * + * Return: number of individual OTP regions + */ +static inline unsigned int spi_nor_otp_n_regions(struct spi_nor *nor) +{ + return nor->params->otp.org->n_regions; +} /** * spi_nor_otp_read_secr() - read security register From patchwork Mon Mar 6 17:21:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Mahapatra, Amit Kumar" X-Patchwork-Id: 659642 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8377DC6FD1E for ; Mon, 6 Mar 2023 17:30:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230420AbjCFRaZ (ORCPT ); Mon, 6 Mar 2023 12:30:25 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34806 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231187AbjCFRaP (ORCPT ); Mon, 6 Mar 2023 12:30:15 -0500 Received: from NAM10-MW2-obe.outbound.protection.outlook.com (mail-mw2nam10on2040.outbound.protection.outlook.com [40.107.94.40]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9B373BBB0; 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Mon, 6 Mar 2023 09:28:16 -0800 Received: from xhdsneeli40.xilinx.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server id 15.1.2375.34 via Frontend Transport; Mon, 6 Mar 2023 11:27:49 -0600 From: Amit Kumar Mahapatra To: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH V5 12/15] mtd: spi-nor: Add stacked memories support in spi-nor Date: Mon, 6 Mar 2023 22:51:06 +0530 Message-ID: <20230306172109.595464-13-amit.kumar-mahapatra@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230306172109.595464-1-amit.kumar-mahapatra@amd.com> References: <20230306172109.595464-1-amit.kumar-mahapatra@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000B8EE:EE_|MW3PR12MB4539:EE_ X-MS-Office365-Filtering-Correlation-Id: ad21891c-79d1-41f9-b289-08db1e683fb5 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Ip=[165.204.84.17]; Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF0000B8EE.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW3PR12MB4539 Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org Each flash that is connected in stacked mode should have a separate parameter structure. So, the flash parameter member(*params) of the spi_nor structure is changed to an array (*params[2]). The array is used to store the parameters of each flash connected in stacked configuration. The current implementation assumes that a maximum of two flashes are connected in stacked mode and both the flashes are of same make but can differ in sizes. So, except the sizes all other flash parameters of both the flashes are identical. SPI-NOR is not aware of the chip_select values, for any incoming request SPI-NOR will decide the flash index with the help of individual flash size and the configuration type (single/stacked). SPI-NOR will pass on the flash index information to the SPI core & SPI driver by setting the appropriate bit in nor->spimem->spi->cs_index_mask. For example, if nth bit of nor->spimem->spi->cs_index_mask is set then the driver would assert/de-assert spi->chip_slect[n]. Signed-off-by: Amit Kumar Mahapatra --- drivers/mtd/spi-nor/core.c | 282 +++++++++++++++++++++++++++++------- drivers/mtd/spi-nor/core.h | 4 + include/linux/mtd/spi-nor.h | 12 +- 3 files changed, 244 insertions(+), 54 deletions(-) diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c index 8a4a54bf2d0e..bb7326dc8b70 100644 --- a/drivers/mtd/spi-nor/core.c +++ b/drivers/mtd/spi-nor/core.c @@ -1441,13 +1441,18 @@ static int spi_nor_erase_multi_sectors(struct spi_nor *nor, u64 addr, u32 len) static int spi_nor_erase(struct mtd_info *mtd, struct erase_info *instr) { struct spi_nor *nor = mtd_to_spi_nor(mtd); - u32 addr, len; + struct spi_nor_flash_parameter *params; + u32 addr, len, offset, cur_cs_num = 0; uint32_t rem; int ret; + u64 sz; dev_dbg(nor->dev, "at 0x%llx, len %lld\n", (long long)instr->addr, (long long)instr->len); + params = spi_nor_get_params(nor, 0); + sz = params->size; + if (spi_nor_has_uniform_erase(nor)) { div_u64_rem(instr->len, mtd->erasesize, &rem); if (rem) @@ -1465,26 +1470,30 @@ static int spi_nor_erase(struct mtd_info *mtd, struct erase_info *instr) if (len == mtd->size && !(nor->flags & SNOR_F_NO_OP_CHIP_ERASE)) { unsigned long timeout; - ret = spi_nor_write_enable(nor); - if (ret) - goto erase_err; + while (cur_cs_num < SNOR_FLASH_CNT_MAX && params) { + nor->spimem->spi->cs_index_mask = 0x01 << cur_cs_num; + ret = spi_nor_write_enable(nor); + if (ret) + goto erase_err; - ret = spi_nor_erase_chip(nor); - if (ret) - goto erase_err; + ret = spi_nor_erase_chip(nor); + if (ret) + goto erase_err; - /* - * Scale the timeout linearly with the size of the flash, with - * a minimum calibrated to an old 2MB flash. We could try to - * pull these from CFI/SFDP, but these values should be good - * enough for now. - */ - timeout = max(CHIP_ERASE_2MB_READY_WAIT_JIFFIES, - CHIP_ERASE_2MB_READY_WAIT_JIFFIES * - (unsigned long)(mtd->size / SZ_2M)); - ret = spi_nor_wait_till_ready_with_timeout(nor, timeout); - if (ret) - goto erase_err; + /* + * Scale the timeout linearly with the size of the flash, with + * a minimum calibrated to an old 2MB flash. We could try to + * pull these from CFI/SFDP, but these values should be good + * enough for now. + */ + timeout = max(CHIP_ERASE_2MB_READY_WAIT_JIFFIES, + CHIP_ERASE_2MB_READY_WAIT_JIFFIES * + (unsigned long)(params->size / SZ_2M)); + ret = spi_nor_wait_till_ready_with_timeout(nor, timeout); + if (ret) + goto erase_err; + cur_cs_num++; + } /* REVISIT in some cases we could speed up erasing large regions * by using SPINOR_OP_SE instead of SPINOR_OP_BE_4K. We may have set up @@ -1493,12 +1502,26 @@ static int spi_nor_erase(struct mtd_info *mtd, struct erase_info *instr) /* "sector"-at-a-time erase */ } else if (spi_nor_has_uniform_erase(nor)) { + /* Determine the flash from which the operation need to start */ + while ((cur_cs_num < SNOR_FLASH_CNT_MAX) && (addr > sz - 1) && params) { + cur_cs_num++; + params = spi_nor_get_params(nor, cur_cs_num); + sz += params->size; + } + while (len) { + nor->spimem->spi->cs_index_mask = 0x01 << cur_cs_num; ret = spi_nor_write_enable(nor); if (ret) goto erase_err; - ret = spi_nor_erase_sector(nor, addr); + offset = addr; + if (nor->flags & SNOR_F_HAS_STACKED) { + params = spi_nor_get_params(nor, cur_cs_num); + offset -= (sz - params->size); + } + + ret = spi_nor_erase_sector(nor, offset); if (ret) goto erase_err; @@ -1508,13 +1531,45 @@ static int spi_nor_erase(struct mtd_info *mtd, struct erase_info *instr) addr += mtd->erasesize; len -= mtd->erasesize; + + /* + * Flash cross over condition in stacked mode. + */ + if ((nor->flags & SNOR_F_HAS_STACKED) && (addr > sz - 1)) { + cur_cs_num++; + params = spi_nor_get_params(nor, cur_cs_num); + sz += params->size; + } } /* erase multiple sectors */ } else { - ret = spi_nor_erase_multi_sectors(nor, addr, len); - if (ret) - goto erase_err; + u64 erase_len = 0; + + /* Determine the flash from which the operation need to start */ + while ((cur_cs_num < SNOR_FLASH_CNT_MAX) && (addr > sz - 1) && params) { + cur_cs_num++; + params = spi_nor_get_params(nor, cur_cs_num); + sz += params->size; + } + /* perform multi sector erase onec per Flash*/ + while (len) { + erase_len = (len > (sz - addr)) ? (sz - addr) : len; + offset = addr; + nor->spimem->spi->cs_index_mask = 0x01 << cur_cs_num; + if (nor->flags & SNOR_F_HAS_STACKED) { + params = spi_nor_get_params(nor, cur_cs_num); + offset -= (sz - params->size); + } + ret = spi_nor_erase_multi_sectors(nor, offset, erase_len); + if (ret) + goto erase_err; + len -= erase_len; + addr += erase_len; + cur_cs_num++; + params = spi_nor_get_params(nor, cur_cs_num); + sz += params->size; + } } ret = spi_nor_write_disable(nor); @@ -1713,7 +1768,10 @@ static int spi_nor_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf) { struct spi_nor *nor = mtd_to_spi_nor(mtd); - ssize_t ret; + struct spi_nor_flash_parameter *params; + ssize_t ret, read_len; + u32 cur_cs_num = 0; + u64 sz; dev_dbg(nor->dev, "from 0x%08x, len %zd\n", (u32)from, len); @@ -1721,9 +1779,23 @@ static int spi_nor_read(struct mtd_info *mtd, loff_t from, size_t len, if (ret) return ret; + params = spi_nor_get_params(nor, 0); + sz = params->size; + + /* Determine the flash from which the operation need to start */ + while ((cur_cs_num < SNOR_FLASH_CNT_MAX) && (from > sz - 1) && params) { + cur_cs_num++; + params = spi_nor_get_params(nor, cur_cs_num); + sz += params->size; + } while (len) { loff_t addr = from; + nor->spimem->spi->cs_index_mask = 0x01 << cur_cs_num; + read_len = (len > (sz - addr)) ? (sz - addr) : len; + params = spi_nor_get_params(nor, cur_cs_num); + addr -= (sz - params->size); + addr = spi_nor_convert_addr(nor, addr); ret = spi_nor_read_data(nor, addr, len, buf); @@ -1735,11 +1807,22 @@ static int spi_nor_read(struct mtd_info *mtd, loff_t from, size_t len, if (ret < 0) goto read_err; - WARN_ON(ret > len); + WARN_ON(ret > read_len); *retlen += ret; buf += ret; from += ret; len -= ret; + + /* + * Flash cross over condition in stacked mode. + * + */ + if ((nor->flags & SNOR_F_HAS_STACKED) && (from > sz - 1)) { + cur_cs_num++; + params = spi_nor_get_params(nor, cur_cs_num); + sz += params->size; + } + } ret = 0; @@ -1759,13 +1842,22 @@ static int spi_nor_write(struct mtd_info *mtd, loff_t to, size_t len, struct spi_nor *nor = mtd_to_spi_nor(mtd); struct spi_nor_flash_parameter *params; size_t page_offset, page_remain, i; + u32 page_size, cur_cs_num = 0; ssize_t ret; - u32 page_size; + u64 sz; dev_dbg(nor->dev, "to 0x%08x, len %zd\n", (u32)to, len); params = spi_nor_get_params(nor, 0); page_size = params->page_size; + sz = params->size; + + /* Determine the flash from which the operation need to start */ + while ((cur_cs_num < SNOR_FLASH_CNT_MAX) && (to > sz - 1) && params) { + cur_cs_num++; + params = spi_nor_get_params(nor, cur_cs_num); + sz += params->size; + } ret = spi_nor_lock_and_prep(nor); if (ret) @@ -1790,6 +1882,10 @@ static int spi_nor_write(struct mtd_info *mtd, loff_t to, size_t len, /* the size of data remaining on the first page */ page_remain = min_t(size_t, page_size - page_offset, len - i); + nor->spimem->spi->cs_index_mask = 0x01 << cur_cs_num; + params = spi_nor_get_params(nor, cur_cs_num); + addr -= (sz - params->size); + addr = spi_nor_convert_addr(nor, addr); ret = spi_nor_write_enable(nor); @@ -1806,6 +1902,15 @@ static int spi_nor_write(struct mtd_info *mtd, loff_t to, size_t len, goto write_err; *retlen += written; i += written; + + /* + * Flash cross over condition in stacked mode. + */ + if ((nor->flags & SNOR_F_HAS_STACKED) && ((to + i) > sz - 1)) { + cur_cs_num++; + params = spi_nor_get_params(nor, cur_cs_num); + sz += params->size; + } } write_err: @@ -1918,8 +2023,6 @@ int spi_nor_hwcaps_pp2cmd(u32 hwcaps) static int spi_nor_spimem_check_op(struct spi_nor *nor, struct spi_mem_op *op) { - struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0); - /* * First test with 4 address bytes. The opcode itself might * be a 3B addressing opcode but we don't care, because @@ -1928,7 +2031,7 @@ static int spi_nor_spimem_check_op(struct spi_nor *nor, */ op->addr.nbytes = 4; if (!spi_mem_supports_op(nor->spimem, op)) { - if (params->size > SZ_16M) + if (nor->mtd.size > SZ_16M) return -EOPNOTSUPP; /* If flash size <= 16MB, 3 address bytes are sufficient */ @@ -2516,6 +2619,10 @@ static void spi_nor_init_fixup_flags(struct spi_nor *nor) static void spi_nor_late_init_params(struct spi_nor *nor) { struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0); + struct device_node *np = spi_nor_get_flash_node(nor); + u64 flash_size[SNOR_FLASH_CNT_MAX]; + u32 idx = 0, i = 0; + int rc; if (nor->manufacturer && nor->manufacturer->fixups && nor->manufacturer->fixups->late_init) @@ -2533,6 +2640,36 @@ static void spi_nor_late_init_params(struct spi_nor *nor) */ if (nor->flags & SNOR_F_HAS_LOCK && !params->locking_ops) spi_nor_init_default_locking_ops(nor); + /* + * The flashes that are connected in stacked mode should be of same make. + * Except the flash size all other properties are identical for all the + * flashes connected in stacked mode. + * The flashes that are connected in parallel mode should be identical. + */ + while (i < SNOR_FLASH_CNT_MAX) { + rc = of_property_read_u64_index(np, "stacked-memories", idx, &flash_size[i]); + if (rc == -EINVAL) { + break; + } else if (rc == -EOVERFLOW) { + idx++; + } else { + idx++; + i++; + if (!(nor->flags & SNOR_F_HAS_STACKED)) + nor->flags |= SNOR_F_HAS_STACKED; + } + } + if (nor->flags & SNOR_F_HAS_STACKED) { + for (idx = 1; idx < SNOR_FLASH_CNT_MAX; idx++) { + params = spi_nor_get_params(nor, idx); + params = devm_kzalloc(nor->dev, sizeof(*params), GFP_KERNEL); + if (params) { + memcpy(params, spi_nor_get_params(nor, 0), sizeof(*params)); + params->size = flash_size[idx]; + spi_nor_set_params(nor, idx, params); + } + } + } } /** @@ -2741,22 +2878,36 @@ static int spi_nor_octal_dtr_enable(struct spi_nor *nor, bool enable) */ static int spi_nor_quad_enable(struct spi_nor *nor) { - struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0); + struct spi_nor_flash_parameter *params; + int err, idx; - if (!params->quad_enable) - return 0; + for (idx = 0; idx < SNOR_FLASH_CNT_MAX; idx++) { + params = spi_nor_get_params(nor, idx); + if (params) { + if (!params->quad_enable) + return 0; - if (!(spi_nor_get_protocol_width(nor->read_proto) == 4 || - spi_nor_get_protocol_width(nor->write_proto) == 4)) - return 0; + if (!(spi_nor_get_protocol_width(nor->read_proto) == 4 || + spi_nor_get_protocol_width(nor->write_proto) == 4)) + return 0; + /* + * Set the appropriate CS index before + * issuing the command. + */ + nor->spimem->spi->cs_index_mask = 0x01 << idx; - return params->quad_enable(nor); + err = params->quad_enable(nor); + if (err) + return err; + } + } + return err; } static int spi_nor_init(struct spi_nor *nor) { - struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0); - int err; + struct spi_nor_flash_parameter *params; + int err, idx; err = spi_nor_octal_dtr_enable(nor, true); if (err) { @@ -2797,9 +2948,19 @@ static int spi_nor_init(struct spi_nor *nor) */ WARN_ONCE(nor->flags & SNOR_F_BROKEN_RESET, "enabling reset hack; may not recover from unexpected reboots\n"); - err = params->set_4byte_addr_mode(nor, true); - if (err && err != -ENOTSUPP) - return err; + for (idx = 0; idx < SNOR_FLASH_CNT_MAX; idx++) { + params = spi_nor_get_params(nor, idx); + if (params) { + /* + * Select the appropriate CS index before + * issuing the command. + */ + nor->spimem->spi->cs_index_mask = 0x01 << idx; + err = params->set_4byte_addr_mode(nor, true); + if (err && err != -ENOTSUPP) + return err; + } + } } return 0; @@ -2915,19 +3076,31 @@ void spi_nor_restore(struct spi_nor *nor) { struct spi_nor_flash_parameter *params; int ret; + int idx; /* restore the addressing mode */ if (nor->addr_nbytes == 4 && !(nor->flags & SNOR_F_4B_OPCODES) && nor->flags & SNOR_F_BROKEN_RESET) { - params = spi_nor_get_params(nor, 0); - ret = params->set_4byte_addr_mode(nor, false); - if (ret) - /* - * Do not stop the execution in the hope that the flash - * will default to the 3-byte address mode after the - * software reset. - */ - dev_err(nor->dev, "Failed to exit 4-byte address mode, err = %d\n", ret); + for (idx = 0; idx < SNOR_FLASH_CNT_MAX; idx++) { + params = spi_nor_get_params(nor, idx); + if (params) { + /* + * Select the appropriate CS index before + * issuing the command. + */ + nor->spimem->spi->cs_index_mask = 0x01 << idx; + ret = params->set_4byte_addr_mode(nor, false); + if (ret) + /* + * Do not stop the execution in the hope that the flash + * will default to the 3-byte address mode after the + * software reset. + */ + dev_err(nor->dev, + "Failed to exit 4-byte address mode, err = %d\n", + ret); + } + } } if (nor->flags & SNOR_F_SOFT_RESET) @@ -2995,6 +3168,8 @@ static void spi_nor_set_mtd_info(struct spi_nor *nor) struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0); struct mtd_info *mtd = &nor->mtd; struct device *dev = nor->dev; + u64 total_sz = 0; + int idx; spi_nor_set_mtd_locking_ops(nor); spi_nor_set_mtd_otp_ops(nor); @@ -3010,7 +3185,12 @@ static void spi_nor_set_mtd_info(struct spi_nor *nor) mtd->_erase = spi_nor_erase; mtd->writesize = params->writesize; mtd->writebufsize = params->page_size; - mtd->size = params->size; + for (idx = 0; idx < SNOR_FLASH_CNT_MAX; idx++) { + params = spi_nor_get_params(nor, idx); + if (params) + total_sz += params->size; + } + mtd->size = total_sz; mtd->_read = spi_nor_read; /* Might be already set by some SST flashes. */ if (!mtd->_write) diff --git a/drivers/mtd/spi-nor/core.h b/drivers/mtd/spi-nor/core.h index f03b55cf7e6f..e94107cc465e 100644 --- a/drivers/mtd/spi-nor/core.h +++ b/drivers/mtd/spi-nor/core.h @@ -11,6 +11,9 @@ #define SPI_NOR_MAX_ID_LEN 6 +/* In single configuration enable CS0 */ +#define SPI_NOR_ENABLE_CS0 BIT(0) + /* Standard SPI NOR flash operations. */ #define SPI_NOR_READID_OP(naddr, ndummy, buf, len) \ SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_RDID, 0), \ @@ -130,6 +133,7 @@ enum spi_nor_option_flags { SNOR_F_IO_MODE_EN_VOLATILE = BIT(11), SNOR_F_SOFT_RESET = BIT(12), SNOR_F_SWP_IS_VOLATILE = BIT(13), + SNOR_F_HAS_STACKED = BIT(14), }; struct spi_nor_read_command { diff --git a/include/linux/mtd/spi-nor.h b/include/linux/mtd/spi-nor.h index 728674ea3c22..79be5d50a509 100644 --- a/include/linux/mtd/spi-nor.h +++ b/include/linux/mtd/spi-nor.h @@ -128,6 +128,12 @@ #define SR2_LB3 BIT(5) /* Security Register Lock Bit 3 */ #define SR2_QUAD_EN_BIT7 BIT(7) +/* + * Maximum number of flashes that can be connected + * in stacked/parallel configuration + */ +#define SNOR_FLASH_CNT_MAX 2 + /* Supported SPI protocols */ #define SNOR_PROTO_INST_MASK GENMASK(23, 16) #define SNOR_PROTO_INST_SHIFT 16 @@ -400,7 +406,7 @@ struct spi_nor { const struct spi_nor_controller_ops *controller_ops; - struct spi_nor_flash_parameter *params; + struct spi_nor_flash_parameter *params[SNOR_FLASH_CNT_MAX]; struct { struct spi_mem_dirmap_desc *rdesc; @@ -423,13 +429,13 @@ static inline struct device_node *spi_nor_get_flash_node(struct spi_nor *nor) static inline struct spi_nor_flash_parameter *spi_nor_get_params(const struct spi_nor *nor, u8 idx) { - return nor->params; + return nor->params[idx]; } static inline void spi_nor_set_params(struct spi_nor *nor, u8 idx, struct spi_nor_flash_parameter *params) { - nor->params = params; + nor->params[idx] = params; } /** * spi_nor_scan() - scan the SPI NOR From patchwork Mon Mar 6 17:21:09 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Mahapatra, Amit Kumar" X-Patchwork-Id: 659641 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 84D3EC6FA99 for ; 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Mon, 6 Mar 2023 11:29:12 -0600 From: Amit Kumar Mahapatra To: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH V5 15/15] spi: spi-zynqmp-gqspi: Add parallel memories support in GQSPI driver Date: Mon, 6 Mar 2023 22:51:09 +0530 Message-ID: <20230306172109.595464-16-amit.kumar-mahapatra@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230306172109.595464-1-amit.kumar-mahapatra@amd.com> References: <20230306172109.595464-1-amit.kumar-mahapatra@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN8NAM11FT063:EE_|CY8PR12MB8299:EE_ X-MS-Office365-Filtering-Correlation-Id: 3affa16c-80ce-4c67-a23b-08db1e685e05 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17; 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Ip=[165.204.84.17]; Helo=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT063.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY8PR12MB8299 Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org During GQSPI driver probe set ctlr->multi-cs-cap for enabling multi CS capability of the controller. In parallel mode the controller can either split the data between both the flash or can send the same data to both the flashes, this is determined by the STRIPE bit. While sending commands to the flashes the GQSPI driver send the same command to both the flashes by resetting the STRIPE bit, but while writing/reading data to & from the flash the GQSPI driver splits the data evenly between both the flashes by setting the STRIPE bit. Signed-off-by: Amit Kumar Mahapatra --- drivers/spi/spi-zynqmp-gqspi.c | 39 +++++++++++++++++++++++++++++++++- 1 file changed, 38 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-zynqmp-gqspi.c b/drivers/spi/spi-zynqmp-gqspi.c index 4759f704bf5c..9e44371bfda2 100644 --- a/drivers/spi/spi-zynqmp-gqspi.c +++ b/drivers/spi/spi-zynqmp-gqspi.c @@ -23,6 +23,7 @@ #include #include #include +#include /* Generic QSPI register offsets */ #define GQSPI_CONFIG_OFST 0x00000100 @@ -192,6 +193,7 @@ struct qspi_platform_data { * @op_lock: Operational lock * @speed_hz: Current SPI bus clock speed in hz * @has_tapdelay: Used for tapdelay register available in qspi + * @is_parallel: Used for multi CS support */ struct zynqmp_qspi { struct spi_controller *ctlr; @@ -214,8 +216,33 @@ struct zynqmp_qspi { struct mutex op_lock; u32 speed_hz; bool has_tapdelay; + bool is_parallel; }; +/** + * zynqmp_gqspi_update_stripe - For GQSPI controller data stripe capabilities + * @op: Pointer to mem ops + * Return: Status of the data stripe + * + * Returns true if data stripe need to be enabled, else returns false + */ +bool zynqmp_gqspi_update_stripe(const struct spi_mem_op *op) +{ + if (op->cmd.opcode == SPINOR_OP_BE_4K || + op->cmd.opcode == SPINOR_OP_BE_32K || + op->cmd.opcode == SPINOR_OP_CHIP_ERASE || + op->cmd.opcode == SPINOR_OP_SE || + op->cmd.opcode == SPINOR_OP_BE_32K_4B || + op->cmd.opcode == SPINOR_OP_SE_4B || + op->cmd.opcode == SPINOR_OP_BE_4K_4B || + op->cmd.opcode == SPINOR_OP_WRSR || + op->cmd.opcode == SPINOR_OP_BRWR || + (op->cmd.opcode == SPINOR_OP_WRSR2 && !op->addr.nbytes)) + return false; + + return true; +} + /** * zynqmp_gqspi_read - For GQSPI controller read operation * @xqspi: Pointer to the zynqmp_qspi structure @@ -470,7 +497,14 @@ static void zynqmp_qspi_chipselect(struct spi_device *qspi, bool is_high) genfifoentry |= GQSPI_GENFIFO_MODE_SPI; - if (qspi->cs_index_mask & GQSPI_SELECT_UPPER_CS) { + if ((qspi->cs_index_mask & GQSPI_SELECT_LOWER_CS) && + (qspi->cs_index_mask & GQSPI_SELECT_UPPER_CS)) { + zynqmp_gqspi_selectslave(xqspi, + GQSPI_SELECT_FLASH_CS_BOTH, + GQSPI_SELECT_FLASH_BUS_BOTH); + if (!xqspi->is_parallel) + xqspi->is_parallel = true; + } else if (qspi->cs_index_mask & GQSPI_SELECT_UPPER_CS) { zynqmp_gqspi_selectslave(xqspi, GQSPI_SELECT_FLASH_CS_UPPER, GQSPI_SELECT_FLASH_BUS_LOWER); @@ -1139,6 +1173,8 @@ static int zynqmp_qspi_exec_op(struct spi_mem *mem, } if (op->data.nbytes) { + if (xqspi->is_parallel && zynqmp_gqspi_update_stripe(op)) + genfifoentry |= GQSPI_GENFIFO_STRIPE; reinit_completion(&xqspi->data_completion); if (op->data.dir == SPI_MEM_DATA_OUT) { xqspi->txbuf = (u8 *)op->data.buf.out; @@ -1334,6 +1370,7 @@ static int zynqmp_qspi_probe(struct platform_device *pdev) ctlr->bits_per_word_mask = SPI_BPW_MASK(8); ctlr->dev.of_node = np; ctlr->auto_runtime_pm = true; + ctlr->multi_cs_cap = true; ret = devm_spi_register_controller(&pdev->dev, ctlr); if (ret) {