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Ip=[175.98.123.7]; Helo=[NTHCCAS04.nuvoton.com] X-MS-Exchange-CrossTenant-AuthSource: SG2PEPF000B66CE.apcprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: TYSPR03MB7884 Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org Add binding for Nuvoton NPCM SDHCI controller. Signed-off-by: Tomer Maimon Reviewed-by: Rob Herring --- .../devicetree/bindings/mmc/npcm,sdhci.yaml | 45 +++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 Documentation/devicetree/bindings/mmc/npcm,sdhci.yaml diff --git a/Documentation/devicetree/bindings/mmc/npcm,sdhci.yaml b/Documentation/devicetree/bindings/mmc/npcm,sdhci.yaml new file mode 100644 index 000000000000..196fdbfa16ed --- /dev/null +++ b/Documentation/devicetree/bindings/mmc/npcm,sdhci.yaml @@ -0,0 +1,45 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mmc/npcm,sdhci.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: NPCM SDHCI Controller + +maintainers: + - Tomer Maimon + +allOf: + - $ref: mmc-controller.yaml# + +properties: + compatible: + enum: + - nuvoton,npcm750-sdhci + - nuvoton,npcm845-sdhci + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + maxItems: 1 + +required: + - compatible + - reg + - interrupts + - clocks + +unevaluatedProperties: false + +examples: + - | + mmc@f0840000 { + compatible = "nuvoton,npcm750-sdhci"; + reg = <0xf0840000 0x200>; + interrupts = <0 27 4>; + clocks = <&clk 4>; + }; From patchwork Mon Oct 2 19:41:38 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomer Maimon X-Patchwork-Id: 729165 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 E2B0EE7491F for ; Mon, 2 Oct 2023 19:41:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238927AbjJBTlv (ORCPT ); Mon, 2 Oct 2023 15:41:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37806 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238941AbjJBTlv (ORCPT ); Mon, 2 Oct 2023 15:41:51 -0400 Received: from APC01-PSA-obe.outbound.protection.outlook.com (mail-psaapc01hn2228.outbound.protection.outlook.com [52.100.0.228]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3D735A9; 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Signed-off-by: Tomer Maimon Acked-by: Adrian Hunter --- drivers/mmc/host/Kconfig | 8 +++ drivers/mmc/host/Makefile | 1 + drivers/mmc/host/sdhci-npcm.c | 96 +++++++++++++++++++++++++++++++++++ 3 files changed, 105 insertions(+) create mode 100644 drivers/mmc/host/sdhci-npcm.c diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig index 554e67103c1a..3999d4fddc73 100644 --- a/drivers/mmc/host/Kconfig +++ b/drivers/mmc/host/Kconfig @@ -429,6 +429,14 @@ config MMC_SDHCI_IPROC If unsure, say N. +config MMC_SDHCI_NPCM + tristate "Secure Digital Host Controller Interface support for NPCM" + depends on ARCH_NPCM || COMPILE_TEST + depends on MMC_SDHCI_PLTFM + help + This provides support for the SD/eMMC controller found in + NPCM BMC family SoCs. + config MMC_MESON_GX tristate "Amlogic S905/GX*/AXG SD/MMC Host Controller support" depends on ARCH_MESON|| COMPILE_TEST diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile index a693fa3d3f1c..d0be4465f3ec 100644 --- a/drivers/mmc/host/Makefile +++ b/drivers/mmc/host/Makefile @@ -89,6 +89,7 @@ obj-$(CONFIG_MMC_SDHCI_OF_DWCMSHC) += sdhci-of-dwcmshc.o obj-$(CONFIG_MMC_SDHCI_OF_SPARX5) += sdhci-of-sparx5.o obj-$(CONFIG_MMC_SDHCI_BCM_KONA) += sdhci-bcm-kona.o obj-$(CONFIG_MMC_SDHCI_IPROC) += sdhci-iproc.o +obj-$(CONFIG_MMC_SDHCI_NPCM) += sdhci-npcm.o obj-$(CONFIG_MMC_SDHCI_MSM) += sdhci-msm.o obj-$(CONFIG_MMC_SDHCI_ST) += sdhci-st.o obj-$(CONFIG_MMC_SDHCI_MICROCHIP_PIC32) += sdhci-pic32.o diff --git a/drivers/mmc/host/sdhci-npcm.c b/drivers/mmc/host/sdhci-npcm.c new file mode 100644 index 000000000000..73bf6f3fbcc0 --- /dev/null +++ b/drivers/mmc/host/sdhci-npcm.c @@ -0,0 +1,96 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * NPCM SDHC MMC host controller driver. + * + * Copyright (c) 2023 Nuvoton Technology corporation. + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "sdhci-pltfm.h" + +static const struct sdhci_pltfm_data npcm7xx_sdhci_pdata = { + .quirks = SDHCI_QUIRK_DELAY_AFTER_POWER, + .quirks2 = SDHCI_QUIRK2_STOP_WITH_TC | + SDHCI_QUIRK2_NO_1_8_V, +}; + +static const struct sdhci_pltfm_data npcm8xx_sdhci_pdata = { + .quirks = SDHCI_QUIRK_DELAY_AFTER_POWER, + .quirks2 = SDHCI_QUIRK2_STOP_WITH_TC, +}; + +static int npcm_sdhci_probe(struct platform_device *pdev) +{ + const struct sdhci_pltfm_data *data; + struct sdhci_pltfm_host *pltfm_host; + struct device *dev = &pdev->dev; + struct sdhci_host *host; + u32 caps; + int ret; + + data = of_device_get_match_data(dev); + if (!data) + return -EINVAL; + + host = sdhci_pltfm_init(pdev, data, 0); + if (IS_ERR(host)) + return PTR_ERR(host); + + pltfm_host = sdhci_priv(host); + + pltfm_host->clk = devm_clk_get_optional_enabled(dev, NULL); + if (IS_ERR(pltfm_host->clk)) { + ret = PTR_ERR(pltfm_host->clk); + goto err_sdhci; + } + + caps = sdhci_readl(host, SDHCI_CAPABILITIES); + if (caps & SDHCI_CAN_DO_8BIT) + host->mmc->caps |= MMC_CAP_8_BIT_DATA; + + ret = mmc_of_parse(host->mmc); + if (ret) + goto err_sdhci_clk; + + ret = sdhci_add_host(host); + if (ret) + goto err_sdhci_clk; + + return 0; + +err_sdhci_clk: + clk_disable_unprepare(pltfm_host->clk); +err_sdhci: + sdhci_pltfm_free(pdev); + return ret; +} + +static const struct of_device_id npcm_sdhci_of_match[] = { + { .compatible = "nuvoton,npcm750-sdhci", .data = &npcm7xx_sdhci_pdata, }, + { .compatible = "nuvoton,npcm845-sdhci", .data = &npcm8xx_sdhci_pdata, }, + { } +}; +MODULE_DEVICE_TABLE(of, npcm_sdhci_of_match); + +static struct platform_driver npcm_sdhci_driver = { + .driver = { + .name = "npcm-sdhci", + .of_match_table = npcm_sdhci_of_match, + .pm = &sdhci_pltfm_pmops, + }, + .probe = npcm_sdhci_probe, + .remove_new = sdhci_pltfm_remove, +}; +module_platform_driver(npcm_sdhci_driver); + +MODULE_DESCRIPTION("NPCM Secure Digital Host Controller Interface driver"); +MODULE_AUTHOR("Tomer Maimon "); +MODULE_LICENSE("GPL");