From patchwork Tue Jan 24 05:44:25 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "A, Rashmi" X-Patchwork-Id: 647910 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 27B1AC54EED for ; Tue, 24 Jan 2023 05:45:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232226AbjAXFp3 (ORCPT ); Tue, 24 Jan 2023 00:45:29 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40540 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232717AbjAXFp0 (ORCPT ); Tue, 24 Jan 2023 00:45:26 -0500 Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AC81D3B3F1; Mon, 23 Jan 2023 21:44:56 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1674539096; x=1706075096; h=from:to:cc:subject:date:message-id:in-reply-to: references; bh=mRV+dnA3SRMEAqJffKv61NWDnzHInh5cxWCpGNICJYg=; b=I5Wwf46i/dUHaiMxvKjnSlfKKGdvjlscdRLW1abpc7XDvEaLoejGMmGg ZDJyucxMtSq8ssuAfrcu5tvggpqzSKaF+s/CtmvmN8zIjD4VmBxnaBZDo W3RCBJyYdRK6bZatVtbYEhIVSVVuL5qarpx9ug+DTI0rztvRJuhaL+Xfd tIZO+UaTo7zv1Qvqzw5K1Uu0mRmF/EiFb28gc0s9SswaKRXUjAb12lS8W G1Zc47V0dhAPgzy2ARepBSf22rLPbKmktlNqB0QKe47Cn8Ob5BeMn+8hy bu74TvcFnFb9ch2Bht+boEYL3OJ6vTu59KR31FBsCoBgCBvxa+fW5uR3F Q==; X-IronPort-AV: E=McAfee;i="6500,9779,10599"; a="305895486" X-IronPort-AV: E=Sophos;i="5.97,241,1669104000"; d="scan'208";a="305895486" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Jan 2023 21:44:41 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10599"; a="655307165" X-IronPort-AV: E=Sophos;i="5.97,241,1669104000"; d="scan'208";a="655307165" Received: from coresw01.iind.intel.com ([10.106.46.194]) by orsmga007.jf.intel.com with ESMTP; 23 Jan 2023 21:44:35 -0800 From: rashmi.a@intel.com To: ulf.hansson@linaro.org, michal.simek@xilinx.com, linux-mmc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, robh+dt@kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, kishon@ti.com, vkoul@kernel.org, andriy.shevchenko@linux.intel.com, linux-phy@lists.infradead.org, mgross@linux.intel.com Cc: kris.pan@linux.intel.com, adrian.hunter@intel.com, mahesh.r.vaidya@intel.com, nandhini.srikandan@intel.com, vasavi.v.itha@intel.com, kenchappa.demakkanavar@intel.com, furong.zhou@intel.com, mallikarjunappa.sangannavar@intel.com, rashmi.a@intel.com Subject: [PATCH v1 2/4] Revert "dt-bindings: mmc: Add bindings for Intel Thunder Bay SoC" Date: Tue, 24 Jan 2023 11:14:25 +0530 Message-Id: <20230124054427.28808-2-rashmi.a@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230124054427.28808-1-rashmi.a@intel.com> References: <20230124054427.28808-1-rashmi.a@intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org From: "A, Rashmi" This reverts commit ab991c05c42853f0b6110022db9bf30fcc6323dd. Revert Thunder Bay specific code as the product got cancelled and there are no end customers. Signed-off-by: A, Rashmi Reviewed-by: Hunter, Adrian wq --- .../devicetree/bindings/mmc/arasan,sdhci.yaml | 25 ------------------- 1 file changed, 25 deletions(-) diff --git a/Documentation/devicetree/bindings/mmc/arasan,sdhci.yaml b/Documentation/devicetree/bindings/mmc/arasan,sdhci.yaml index 4053de758db6..0d5d21dd30bb 100644 --- a/Documentation/devicetree/bindings/mmc/arasan,sdhci.yaml +++ b/Documentation/devicetree/bindings/mmc/arasan,sdhci.yaml @@ -88,12 +88,6 @@ properties: description: For this device it is strongly suggested to include arasan,soc-ctl-syscon. - - items: - - const: intel,thunderbay-sdhci-5.1 # Intel Thunder Bay eMMC PHY - - const: arasan,sdhci-5.1 - description: - For this device it is strongly suggested to include - clock-output-names and '#clock-cells'. reg: maxItems: 1 @@ -309,22 +303,3 @@ examples: <&scmi_clk KEEM_BAY_PSS_SD0>; arasan,soc-ctl-syscon = <&sd0_phy_syscon>; }; - - - | - #define EMMC_XIN_CLK - #define EMMC_AXI_CLK - #define TBH_PSS_EMMC_RST_N - mmc@80420000 { - compatible = "intel,thunderbay-sdhci-5.1", "arasan,sdhci-5.1"; - interrupts = ; - reg = <0x80420000 0x400>; - clocks = <&scmi_clk EMMC_XIN_CLK>, - <&scmi_clk EMMC_AXI_CLK>; - clock-names = "clk_xin", "clk_ahb"; - phys = <&emmc_phy>; - phy-names = "phy_arasan"; - assigned-clocks = <&scmi_clk EMMC_XIN_CLK>; - clock-output-names = "emmc_cardclock"; - resets = <&rst_pss1 TBH_PSS_EMMC_RST_N>; - #clock-cells = <0x0>; - }; From patchwork Tue Jan 24 05:44:26 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "A, Rashmi" X-Patchwork-Id: 647909 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 A7AA1C25B4E for ; Tue, 24 Jan 2023 05:45:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232887AbjAXFp4 (ORCPT ); Tue, 24 Jan 2023 00:45:56 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41126 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232855AbjAXFps (ORCPT ); Tue, 24 Jan 2023 00:45:48 -0500 Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 515313B643; Mon, 23 Jan 2023 21:45:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1674539107; x=1706075107; h=from:to:cc:subject:date:message-id:in-reply-to: references; bh=JiO68J/fT9vLUrjkLUr6C/8PO7Ta3DhP06nPflcwLA8=; b=Fcm8n5FlEjQxb5TosBVxtINMhlcuAOy76G0pjX1KfvgdDWHQKOGxyGKH ExwfrsnWvPj7Mm4zfQKrye5e6joB05oxmN5G3UFw+yOdLAvhFqiY3/SNI v90kiYup1oXdWFHSxDr5+usrWc15oGOODmDj+0Gs5EINVsEu5vI3nttpU PDKCW6I8jCbZQWbUwSyaIFfx88W07JOIdfiGr9qNprO2M1QGX9lrQ5zAw nNQk8iVLatZfdOJP1gPRfMGWTsH0DMtuMIXPInfHDMbwjnVMhdUHtVg2s bfAMSiJEoml4QIwnEspHGQgKSL6ZmMht3Ng0zXn71il+rZcxFubLyuPSQ A==; X-IronPort-AV: E=McAfee;i="6500,9779,10599"; a="305895506" X-IronPort-AV: E=Sophos;i="5.97,241,1669104000"; d="scan'208";a="305895506" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Jan 2023 21:44:49 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10599"; a="655307187" X-IronPort-AV: E=Sophos;i="5.97,241,1669104000"; d="scan'208";a="655307187" Received: from coresw01.iind.intel.com ([10.106.46.194]) by orsmga007.jf.intel.com with ESMTP; 23 Jan 2023 21:44:41 -0800 From: rashmi.a@intel.com To: ulf.hansson@linaro.org, michal.simek@xilinx.com, linux-mmc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, robh+dt@kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, kishon@ti.com, vkoul@kernel.org, andriy.shevchenko@linux.intel.com, linux-phy@lists.infradead.org, mgross@linux.intel.com Cc: kris.pan@linux.intel.com, adrian.hunter@intel.com, mahesh.r.vaidya@intel.com, nandhini.srikandan@intel.com, vasavi.v.itha@intel.com, kenchappa.demakkanavar@intel.com, furong.zhou@intel.com, mallikarjunappa.sangannavar@intel.com, rashmi.a@intel.com Subject: [PATCH v1 3/4] Revert "phy: intel: Add Thunder Bay eMMC PHY support" Date: Tue, 24 Jan 2023 11:14:26 +0530 Message-Id: <20230124054427.28808-3-rashmi.a@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230124054427.28808-1-rashmi.a@intel.com> References: <20230124054427.28808-1-rashmi.a@intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org From: "A, Rashmi" This reverts commit 97004c1a4c52b4357169290158a130ca0b7caae1. Revert Thunder Bay specific code as the product got cancelled and there are no end customers. Signed-off-by: A, Rashmi Reviewed-by: Hunter, Adrian --- drivers/phy/intel/Kconfig | 10 - drivers/phy/intel/Makefile | 1 - drivers/phy/intel/phy-intel-thunderbay-emmc.c | 509 ------------------ 3 files changed, 520 deletions(-) delete mode 100644 drivers/phy/intel/phy-intel-thunderbay-emmc.c diff --git a/drivers/phy/intel/Kconfig b/drivers/phy/intel/Kconfig index 18a3cc5b98c0..ac42bb2fb394 100644 --- a/drivers/phy/intel/Kconfig +++ b/drivers/phy/intel/Kconfig @@ -46,13 +46,3 @@ config PHY_INTEL_LGM_EMMC select GENERIC_PHY help Enable this to support the Intel EMMC PHY - -config PHY_INTEL_THUNDERBAY_EMMC - tristate "Intel Thunder Bay eMMC PHY driver" - depends on OF && (ARCH_THUNDERBAY || COMPILE_TEST) - select GENERIC_PHY - help - This option enables support for Intel Thunder Bay SoC eMMC PHY. - - To compile this driver as a module, choose M here: the module - will be called phy-intel-thunderbay-emmc.ko. diff --git a/drivers/phy/intel/Makefile b/drivers/phy/intel/Makefile index b7321d56b0bb..14550981a707 100644 --- a/drivers/phy/intel/Makefile +++ b/drivers/phy/intel/Makefile @@ -3,4 +3,3 @@ obj-$(CONFIG_PHY_INTEL_KEEMBAY_EMMC) += phy-intel-keembay-emmc.o obj-$(CONFIG_PHY_INTEL_KEEMBAY_USB) += phy-intel-keembay-usb.o obj-$(CONFIG_PHY_INTEL_LGM_COMBO) += phy-intel-lgm-combo.o obj-$(CONFIG_PHY_INTEL_LGM_EMMC) += phy-intel-lgm-emmc.o -obj-$(CONFIG_PHY_INTEL_THUNDERBAY_EMMC) += phy-intel-thunderbay-emmc.o diff --git a/drivers/phy/intel/phy-intel-thunderbay-emmc.c b/drivers/phy/intel/phy-intel-thunderbay-emmc.c deleted file mode 100644 index 593f6970b81e..000000000000 --- a/drivers/phy/intel/phy-intel-thunderbay-emmc.c +++ /dev/null @@ -1,509 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Intel ThunderBay eMMC PHY driver - * - * Copyright (C) 2021 Intel Corporation - * - */ - -#include -#include -#include -#include -#include -#include -#include -#include - -/* eMMC/SD/SDIO core/phy configuration registers */ -#define CTRL_CFG_0 0x00 -#define CTRL_CFG_1 0x04 -#define CTRL_PRESET_0 0x08 -#define CTRL_PRESET_1 0x0c -#define CTRL_PRESET_2 0x10 -#define CTRL_PRESET_3 0x14 -#define CTRL_PRESET_4 0x18 -#define CTRL_CFG_2 0x1c -#define CTRL_CFG_3 0x20 -#define PHY_CFG_0 0x24 -#define PHY_CFG_1 0x28 -#define PHY_CFG_2 0x2c -#define PHYBIST_CTRL 0x30 -#define SDHC_STAT3 0x34 -#define PHY_STAT 0x38 -#define PHYBIST_STAT_0 0x3c -#define PHYBIST_STAT_1 0x40 -#define EMMC_AXI 0x44 - -/* CTRL_PRESET_3 */ -#define CTRL_PRESET3_MASK GENMASK(31, 0) -#define CTRL_PRESET3_SHIFT 0 - -/* CTRL_CFG_0 bit fields */ -#define SUPPORT_HS_MASK BIT(26) -#define SUPPORT_HS_SHIFT 26 - -#define SUPPORT_8B_MASK BIT(24) -#define SUPPORT_8B_SHIFT 24 - -/* CTRL_CFG_1 bit fields */ -#define SUPPORT_SDR50_MASK BIT(28) -#define SUPPORT_SDR50_SHIFT 28 -#define SLOT_TYPE_MASK GENMASK(27, 26) -#define SLOT_TYPE_OFFSET 26 -#define SUPPORT_64B_MASK BIT(24) -#define SUPPORT_64B_SHIFT 24 -#define SUPPORT_HS400_MASK BIT(2) -#define SUPPORT_HS400_SHIFT 2 -#define SUPPORT_DDR50_MASK BIT(1) -#define SUPPORT_DDR50_SHIFT 1 -#define SUPPORT_SDR104_MASK BIT(0) -#define SUPPORT_SDR104_SHIFT 0 - -/* PHY_CFG_0 bit fields */ -#define SEL_DLY_TXCLK_MASK BIT(29) -#define SEL_DLY_TXCLK_SHIFT 29 -#define SEL_DLY_RXCLK_MASK BIT(28) -#define SEL_DLY_RXCLK_SHIFT 28 - -#define OTAP_DLY_ENA_MASK BIT(27) -#define OTAP_DLY_ENA_SHIFT 27 -#define OTAP_DLY_SEL_MASK GENMASK(26, 23) -#define OTAP_DLY_SEL_SHIFT 23 -#define ITAP_CHG_WIN_MASK BIT(22) -#define ITAP_CHG_WIN_SHIFT 22 -#define ITAP_DLY_ENA_MASK BIT(21) -#define ITAP_DLY_ENA_SHIFT 21 -#define ITAP_DLY_SEL_MASK GENMASK(20, 16) -#define ITAP_DLY_SEL_SHIFT 16 -#define RET_ENB_MASK BIT(15) -#define RET_ENB_SHIFT 15 -#define RET_EN_MASK BIT(14) -#define RET_EN_SHIFT 14 -#define DLL_IFF_MASK GENMASK(13, 11) -#define DLL_IFF_SHIFT 11 -#define DLL_EN_MASK BIT(10) -#define DLL_EN_SHIFT 10 -#define DLL_TRIM_ICP_MASK GENMASK(9, 6) -#define DLL_TRIM_ICP_SHIFT 6 -#define RETRIM_EN_MASK BIT(5) -#define RETRIM_EN_SHIFT 5 -#define RETRIM_MASK BIT(4) -#define RETRIM_SHIFT 4 -#define DR_TY_MASK GENMASK(3, 1) -#define DR_TY_SHIFT 1 -#define PWR_DOWN_MASK BIT(0) -#define PWR_DOWN_SHIFT 0 - -/* PHY_CFG_1 bit fields */ -#define REN_DAT_MASK GENMASK(19, 12) -#define REN_DAT_SHIFT 12 -#define REN_CMD_MASK BIT(11) -#define REN_CMD_SHIFT 11 -#define REN_STRB_MASK BIT(10) -#define REN_STRB_SHIFT 10 -#define PU_STRB_MASK BIT(20) -#define PU_STRB_SHIFT 20 - -/* PHY_CFG_2 bit fields */ -#define CLKBUF_MASK GENMASK(24, 21) -#define CLKBUF_SHIFT 21 -#define SEL_STRB_MASK GENMASK(20, 13) -#define SEL_STRB_SHIFT 13 -#define SEL_FREQ_MASK GENMASK(12, 10) -#define SEL_FREQ_SHIFT 10 - -/* PHY_STAT bit fields */ -#define CAL_DONE BIT(6) -#define DLL_RDY BIT(5) - -#define OTAP_DLY 0x0 -#define ITAP_DLY 0x0 -#define STRB 0x33 - -/* From ACS_eMMC51_16nFFC_RO1100_Userguide_v1p0.pdf p17 */ -#define FREQSEL_200M_170M 0x0 -#define FREQSEL_170M_140M 0x1 -#define FREQSEL_140M_110M 0x2 -#define FREQSEL_110M_80M 0x3 -#define FREQSEL_80M_50M 0x4 -#define FREQSEL_275M_250M 0x5 -#define FREQSEL_250M_225M 0x6 -#define FREQSEL_225M_200M 0x7 - -/* Phy power status */ -#define PHY_UNINITIALIZED 0 -#define PHY_INITIALIZED 1 - -/* - * During init(400KHz) phy_settings will be called with 200MHZ clock - * To avoid incorrectly setting the phy for init(400KHZ) "phy_power_sts" is used. - * When actual clock is set always phy is powered off once and then powered on. - * (sdhci_arasan_set_clock). That feature will be used to identify whether the - * settings are for init phy_power_on or actual clock phy_power_on - * 0 --> init settings - * 1 --> actual settings - */ - -struct thunderbay_emmc_phy { - void __iomem *reg_base; - struct clk *emmcclk; - int phy_power_sts; -}; - -static inline void update_reg(struct thunderbay_emmc_phy *tbh_phy, u32 offset, - u32 mask, u32 shift, u32 val) -{ - u32 tmp; - - tmp = readl(tbh_phy->reg_base + offset); - tmp &= ~mask; - tmp |= val << shift; - writel(tmp, tbh_phy->reg_base + offset); -} - -static int thunderbay_emmc_phy_power(struct phy *phy, bool power_on) -{ - struct thunderbay_emmc_phy *tbh_phy = phy_get_drvdata(phy); - unsigned int freqsel = FREQSEL_200M_170M; - unsigned long rate; - static int lock; - u32 val; - int ret; - - /* Disable DLL */ - rate = clk_get_rate(tbh_phy->emmcclk); - switch (rate) { - case 200000000: - /* lock dll only when it is used, i.e only if SEL_DLY_TXCLK/RXCLK are 0 */ - update_reg(tbh_phy, PHY_CFG_0, DLL_EN_MASK, DLL_EN_SHIFT, 0x0); - break; - - /* dll lock not required for other frequencies */ - case 50000000 ... 52000000: - case 400000: - default: - break; - } - - if (!power_on) - return 0; - - rate = clk_get_rate(tbh_phy->emmcclk); - switch (rate) { - case 170000001 ... 200000000: - freqsel = FREQSEL_200M_170M; - break; - - case 140000001 ... 170000000: - freqsel = FREQSEL_170M_140M; - break; - - case 110000001 ... 140000000: - freqsel = FREQSEL_140M_110M; - break; - - case 80000001 ... 110000000: - freqsel = FREQSEL_110M_80M; - break; - - case 50000000 ... 80000000: - freqsel = FREQSEL_80M_50M; - break; - - case 250000001 ... 275000000: - freqsel = FREQSEL_275M_250M; - break; - - case 225000001 ... 250000000: - freqsel = FREQSEL_250M_225M; - break; - - case 200000001 ... 225000000: - freqsel = FREQSEL_225M_200M; - break; - default: - break; - } - /* Clock rate is checked against upper limit. It may fall low during init */ - if (rate > 200000000) - dev_warn(&phy->dev, "Unsupported rate: %lu\n", rate); - - udelay(5); - - if (lock == 0) { - /* PDB will be done only once per boot */ - update_reg(tbh_phy, PHY_CFG_0, PWR_DOWN_MASK, - PWR_DOWN_SHIFT, 0x1); - lock = 1; - /* - * According to the user manual, it asks driver to wait 5us for - * calpad busy trimming. However it is documented that this value is - * PVT(A.K.A. process, voltage and temperature) relevant, so some - * failure cases are found which indicates we should be more tolerant - * to calpad busy trimming. - */ - ret = readl_poll_timeout(tbh_phy->reg_base + PHY_STAT, - val, (val & CAL_DONE), 10, 50); - if (ret) { - dev_err(&phy->dev, "caldone failed, ret=%d\n", ret); - return ret; - } - } - rate = clk_get_rate(tbh_phy->emmcclk); - switch (rate) { - case 200000000: - /* Set frequency of the DLL operation */ - update_reg(tbh_phy, PHY_CFG_2, SEL_FREQ_MASK, SEL_FREQ_SHIFT, freqsel); - - /* Enable DLL */ - update_reg(tbh_phy, PHY_CFG_0, DLL_EN_MASK, DLL_EN_SHIFT, 0x1); - - /* - * After enabling analog DLL circuits docs say that we need 10.2 us if - * our source clock is at 50 MHz and that lock time scales linearly - * with clock speed. If we are powering on the PHY and the card clock - * is super slow (like 100kHz) this could take as long as 5.1 ms as - * per the math: 10.2 us * (50000000 Hz / 100000 Hz) => 5.1 ms - * hopefully we won't be running at 100 kHz, but we should still make - * sure we wait long enough. - * - * NOTE: There appear to be corner cases where the DLL seems to take - * extra long to lock for reasons that aren't understood. In some - * extreme cases we've seen it take up to over 10ms (!). We'll be - * generous and give it 50ms. - */ - ret = readl_poll_timeout(tbh_phy->reg_base + PHY_STAT, - val, (val & DLL_RDY), 10, 50 * USEC_PER_MSEC); - if (ret) { - dev_err(&phy->dev, "dllrdy failed, ret=%d\n", ret); - return ret; - } - break; - - default: - break; - } - return 0; -} - -static int thunderbay_emmc_phy_init(struct phy *phy) -{ - struct thunderbay_emmc_phy *tbh_phy = phy_get_drvdata(phy); - - tbh_phy->emmcclk = clk_get(&phy->dev, "emmcclk"); - - return PTR_ERR_OR_ZERO(tbh_phy->emmcclk); -} - -static int thunderbay_emmc_phy_exit(struct phy *phy) -{ - struct thunderbay_emmc_phy *tbh_phy = phy_get_drvdata(phy); - - clk_put(tbh_phy->emmcclk); - - return 0; -} - -static int thunderbay_emmc_phy_power_on(struct phy *phy) -{ - struct thunderbay_emmc_phy *tbh_phy = phy_get_drvdata(phy); - unsigned long rate; - - /* Overwrite capability bits configurable in bootloader */ - update_reg(tbh_phy, CTRL_CFG_0, - SUPPORT_HS_MASK, SUPPORT_HS_SHIFT, 0x1); - update_reg(tbh_phy, CTRL_CFG_0, - SUPPORT_8B_MASK, SUPPORT_8B_SHIFT, 0x1); - update_reg(tbh_phy, CTRL_CFG_1, - SUPPORT_SDR50_MASK, SUPPORT_SDR50_SHIFT, 0x1); - update_reg(tbh_phy, CTRL_CFG_1, - SUPPORT_DDR50_MASK, SUPPORT_DDR50_SHIFT, 0x1); - update_reg(tbh_phy, CTRL_CFG_1, - SUPPORT_SDR104_MASK, SUPPORT_SDR104_SHIFT, 0x1); - update_reg(tbh_phy, CTRL_CFG_1, - SUPPORT_HS400_MASK, SUPPORT_HS400_SHIFT, 0x1); - update_reg(tbh_phy, CTRL_CFG_1, - SUPPORT_64B_MASK, SUPPORT_64B_SHIFT, 0x1); - - if (tbh_phy->phy_power_sts == PHY_UNINITIALIZED) { - /* Indicates initialization, settings for init, same as 400KHZ setting */ - update_reg(tbh_phy, PHY_CFG_0, SEL_DLY_TXCLK_MASK, SEL_DLY_TXCLK_SHIFT, 0x1); - update_reg(tbh_phy, PHY_CFG_0, SEL_DLY_RXCLK_MASK, SEL_DLY_RXCLK_SHIFT, 0x1); - update_reg(tbh_phy, PHY_CFG_0, ITAP_DLY_ENA_MASK, ITAP_DLY_ENA_SHIFT, 0x0); - update_reg(tbh_phy, PHY_CFG_0, ITAP_DLY_SEL_MASK, ITAP_DLY_SEL_SHIFT, 0x0); - update_reg(tbh_phy, PHY_CFG_0, OTAP_DLY_ENA_MASK, OTAP_DLY_ENA_SHIFT, 0x0); - update_reg(tbh_phy, PHY_CFG_0, OTAP_DLY_SEL_MASK, OTAP_DLY_SEL_SHIFT, 0); - update_reg(tbh_phy, PHY_CFG_0, DLL_TRIM_ICP_MASK, DLL_TRIM_ICP_SHIFT, 0); - update_reg(tbh_phy, PHY_CFG_0, DR_TY_MASK, DR_TY_SHIFT, 0x1); - - } else if (tbh_phy->phy_power_sts == PHY_INITIALIZED) { - /* Indicates actual clock setting */ - rate = clk_get_rate(tbh_phy->emmcclk); - switch (rate) { - case 200000000: - update_reg(tbh_phy, PHY_CFG_0, SEL_DLY_TXCLK_MASK, - SEL_DLY_TXCLK_SHIFT, 0x0); - update_reg(tbh_phy, PHY_CFG_0, SEL_DLY_RXCLK_MASK, - SEL_DLY_RXCLK_SHIFT, 0x0); - update_reg(tbh_phy, PHY_CFG_0, ITAP_DLY_ENA_MASK, - ITAP_DLY_ENA_SHIFT, 0x0); - update_reg(tbh_phy, PHY_CFG_0, ITAP_DLY_SEL_MASK, - ITAP_DLY_SEL_SHIFT, 0x0); - update_reg(tbh_phy, PHY_CFG_0, OTAP_DLY_ENA_MASK, - OTAP_DLY_ENA_SHIFT, 0x1); - update_reg(tbh_phy, PHY_CFG_0, OTAP_DLY_SEL_MASK, - OTAP_DLY_SEL_SHIFT, 2); - update_reg(tbh_phy, PHY_CFG_0, DLL_TRIM_ICP_MASK, - DLL_TRIM_ICP_SHIFT, 0x8); - update_reg(tbh_phy, PHY_CFG_0, DR_TY_MASK, - DR_TY_SHIFT, 0x1); - /* For HS400 only */ - update_reg(tbh_phy, PHY_CFG_2, SEL_STRB_MASK, - SEL_STRB_SHIFT, STRB); - break; - - case 50000000 ... 52000000: - /* For both HS and DDR52 this setting works */ - update_reg(tbh_phy, PHY_CFG_0, SEL_DLY_TXCLK_MASK, - SEL_DLY_TXCLK_SHIFT, 0x1); - update_reg(tbh_phy, PHY_CFG_0, SEL_DLY_RXCLK_MASK, - SEL_DLY_RXCLK_SHIFT, 0x1); - update_reg(tbh_phy, PHY_CFG_0, ITAP_DLY_ENA_MASK, - ITAP_DLY_ENA_SHIFT, 0x0); - update_reg(tbh_phy, PHY_CFG_0, ITAP_DLY_SEL_MASK, - ITAP_DLY_SEL_SHIFT, 0x0); - update_reg(tbh_phy, PHY_CFG_0, OTAP_DLY_ENA_MASK, - OTAP_DLY_ENA_SHIFT, 0x1); - update_reg(tbh_phy, PHY_CFG_0, OTAP_DLY_SEL_MASK, - OTAP_DLY_SEL_SHIFT, 4); - update_reg(tbh_phy, PHY_CFG_0, DLL_TRIM_ICP_MASK, - DLL_TRIM_ICP_SHIFT, 0x8); - update_reg(tbh_phy, PHY_CFG_0, - DR_TY_MASK, DR_TY_SHIFT, 0x1); - break; - - case 400000: - update_reg(tbh_phy, PHY_CFG_0, SEL_DLY_TXCLK_MASK, - SEL_DLY_TXCLK_SHIFT, 0x1); - update_reg(tbh_phy, PHY_CFG_0, SEL_DLY_RXCLK_MASK, - SEL_DLY_RXCLK_SHIFT, 0x1); - update_reg(tbh_phy, PHY_CFG_0, ITAP_DLY_ENA_MASK, - ITAP_DLY_ENA_SHIFT, 0x0); - update_reg(tbh_phy, PHY_CFG_0, ITAP_DLY_SEL_MASK, - ITAP_DLY_SEL_SHIFT, 0x0); - update_reg(tbh_phy, PHY_CFG_0, OTAP_DLY_ENA_MASK, - OTAP_DLY_ENA_SHIFT, 0x0); - update_reg(tbh_phy, PHY_CFG_0, OTAP_DLY_SEL_MASK, - OTAP_DLY_SEL_SHIFT, 0); - update_reg(tbh_phy, PHY_CFG_0, DLL_TRIM_ICP_MASK, - DLL_TRIM_ICP_SHIFT, 0); - update_reg(tbh_phy, PHY_CFG_0, DR_TY_MASK, DR_TY_SHIFT, 0x1); - break; - - default: - update_reg(tbh_phy, PHY_CFG_0, SEL_DLY_TXCLK_MASK, - SEL_DLY_TXCLK_SHIFT, 0x1); - update_reg(tbh_phy, PHY_CFG_0, SEL_DLY_RXCLK_MASK, - SEL_DLY_RXCLK_SHIFT, 0x1); - update_reg(tbh_phy, PHY_CFG_0, ITAP_DLY_ENA_MASK, - ITAP_DLY_ENA_SHIFT, 0x0); - update_reg(tbh_phy, PHY_CFG_0, ITAP_DLY_SEL_MASK, - ITAP_DLY_SEL_SHIFT, 0x0); - update_reg(tbh_phy, PHY_CFG_0, OTAP_DLY_ENA_MASK, - OTAP_DLY_ENA_SHIFT, 0x1); - update_reg(tbh_phy, PHY_CFG_0, OTAP_DLY_SEL_MASK, - OTAP_DLY_SEL_SHIFT, 2); - update_reg(tbh_phy, PHY_CFG_0, DLL_TRIM_ICP_MASK, - DLL_TRIM_ICP_SHIFT, 0x8); - update_reg(tbh_phy, PHY_CFG_0, DR_TY_MASK, - DR_TY_SHIFT, 0x1); - break; - } - /* Reset, init seq called without phy_power_off, this indicates init seq */ - tbh_phy->phy_power_sts = PHY_UNINITIALIZED; - } - - update_reg(tbh_phy, PHY_CFG_0, RETRIM_EN_MASK, RETRIM_EN_SHIFT, 0x1); - update_reg(tbh_phy, PHY_CFG_0, RETRIM_MASK, RETRIM_SHIFT, 0x0); - - return thunderbay_emmc_phy_power(phy, 1); -} - -static int thunderbay_emmc_phy_power_off(struct phy *phy) -{ - struct thunderbay_emmc_phy *tbh_phy = phy_get_drvdata(phy); - - tbh_phy->phy_power_sts = PHY_INITIALIZED; - - return thunderbay_emmc_phy_power(phy, 0); -} - -static const struct phy_ops thunderbay_emmc_phy_ops = { - .init = thunderbay_emmc_phy_init, - .exit = thunderbay_emmc_phy_exit, - .power_on = thunderbay_emmc_phy_power_on, - .power_off = thunderbay_emmc_phy_power_off, - .owner = THIS_MODULE, -}; - -static const struct of_device_id thunderbay_emmc_phy_of_match[] = { - { .compatible = "intel,thunderbay-emmc-phy", - (void *)&thunderbay_emmc_phy_ops }, - {} -}; -MODULE_DEVICE_TABLE(of, thunderbay_emmc_phy_of_match); - -static int thunderbay_emmc_phy_probe(struct platform_device *pdev) -{ - struct thunderbay_emmc_phy *tbh_phy; - struct phy_provider *phy_provider; - struct device *dev = &pdev->dev; - const struct of_device_id *id; - struct phy *generic_phy; - struct resource *res; - - if (!dev->of_node) - return -ENODEV; - - tbh_phy = devm_kzalloc(dev, sizeof(*tbh_phy), GFP_KERNEL); - if (!tbh_phy) - return -ENOMEM; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - tbh_phy->reg_base = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(tbh_phy->reg_base)) - return PTR_ERR(tbh_phy->reg_base); - - tbh_phy->phy_power_sts = PHY_UNINITIALIZED; - id = of_match_node(thunderbay_emmc_phy_of_match, pdev->dev.of_node); - if (!id) { - dev_err(dev, "failed to get match_node\n"); - return -EINVAL; - } - - generic_phy = devm_phy_create(dev, dev->of_node, id->data); - if (IS_ERR(generic_phy)) { - dev_err(dev, "failed to create PHY\n"); - return PTR_ERR(generic_phy); - } - - phy_set_drvdata(generic_phy, tbh_phy); - phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); - - return PTR_ERR_OR_ZERO(phy_provider); -} - -static struct platform_driver thunderbay_emmc_phy_driver = { - .probe = thunderbay_emmc_phy_probe, - .driver = { - .name = "thunderbay-emmc-phy", - .of_match_table = thunderbay_emmc_phy_of_match, - }, -}; -module_platform_driver(thunderbay_emmc_phy_driver); - -MODULE_AUTHOR("Nandhini S "); -MODULE_AUTHOR("Rashmi A "); -MODULE_DESCRIPTION("Intel Thunder Bay eMMC PHY driver"); -MODULE_LICENSE("GPL v2");