From patchwork Fri Dec 2 03:13:23 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Doug Brown X-Patchwork-Id: 13062115 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 E537FC4708E for ; Fri, 2 Dec 2022 03:13:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231360AbiLBDNy (ORCPT ); Thu, 1 Dec 2022 22:13:54 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55460 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231299AbiLBDNy (ORCPT ); Thu, 1 Dec 2022 22:13:54 -0500 Received: from mail-pf1-x434.google.com (mail-pf1-x434.google.com [IPv6:2607:f8b0:4864:20::434]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CD48BA9CCE for ; Thu, 1 Dec 2022 19:13:52 -0800 (PST) Received: by mail-pf1-x434.google.com with SMTP id z17so3739899pff.1 for ; Thu, 01 Dec 2022 19:13:52 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=schmorgal.com; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=Tv1e03FO2qF987UL3rYSZkGVDWpL3dr4bIgnamkaz8k=; b=JV2o44TcICEeavKcKwTz5icwfqQZhgGRMR59dYqZw6edW2hmyWYnto69rzN58YgSCl YZ62t32NCd8NWbOCcRo+JJ1OVyWgaYyR7dUcc2X2d9aud1Z3KdnfVY5jdO6Hh1jgavP3 gQmn1d5BFULs30vR6Eo1cCyDnWFnV+bBJSDdw= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Tv1e03FO2qF987UL3rYSZkGVDWpL3dr4bIgnamkaz8k=; b=iFVutybeVo+RctPLi6EDnRlBX4nR1D3o9ICzda9BUaRXbZj/yAU30Xr8vgV2nsuEOH sXFyOJMhEd76DFxRb7nEHiXpjRyYUo13trJAM45pHz/wKm//1FctDUexRp4cSxGcFcSV 7ZnPS0UfiCAtSFXvERRkCj+Um2PHfCV4XR/nb0petvZ4sC0NDAA44AqS88jIitsQvBWX Q0d6X+Wqi1LiQEo8sTIVT0pzc4huz11r67vhU1na8yc5sXfmKPTIJpolidhWffys/19l zGJK5CFWxA4S7dYwvyHR/lpuanDryGmnRlECohS3Qh+7KkXW01Llq8ZNk7flxlaI8m6e QuQA== X-Gm-Message-State: ANoB5pk+NAlr/lnQ2SJLHu1ajkq3ZVFI4nOs4y45tpx5lBrrwkPka2Nb TNmQNeqChhjmMOBzR6SSdBfZqg== X-Google-Smtp-Source: AA0mqf42Fi4K0GcfUowvvBL6IInOEw16/UgSJiR9E4D+8vzj/BiS6MQ9Yoo27zFnj4kwNRAn2Bq8DQ== X-Received: by 2002:a63:4f48:0:b0:477:4451:cf5 with SMTP id p8-20020a634f48000000b0047744510cf5mr43112803pgl.391.1669950832251; Thu, 01 Dec 2022 19:13:52 -0800 (PST) Received: from doug-ryzen-5700G.. ([192.183.212.197]) by smtp.gmail.com with ESMTPSA id jx24-20020a17090b46d800b00213202d77d9sm3708410pjb.43.2022.12.01.19.13.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 01 Dec 2022 19:13:51 -0800 (PST) From: Doug Brown To: Ulf Hansson , Adrian Hunter Cc: Rob Herring , Krzysztof Kozlowski , linux-mmc@vger.kernel.org, devicetree@vger.kernel.org, Doug Brown Subject: [PATCH v2 1/8] mmc: sdhci-pxav2: add initial support for PXA168 V1 controller Date: Thu, 1 Dec 2022 19:13:23 -0800 Message-Id: <20221202031330.94130-2-doug@schmorgal.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221202031330.94130-1-doug@schmorgal.com> References: <20221202031330.94130-1-doug@schmorgal.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org Add a new compatible string for the version 1 controller used in the PXA168, along with necessary quirks. Use a separate ops struct in preparation for a silicon bug workaround only necessary on V1. Signed-off-by: Doug Brown --- drivers/mmc/host/sdhci-pxav2.c | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/sdhci-pxav2.c b/drivers/mmc/host/sdhci-pxav2.c index f18906b5575f..2f9fa0ecbddd 100644 --- a/drivers/mmc/host/sdhci-pxav2.c +++ b/drivers/mmc/host/sdhci-pxav2.c @@ -101,6 +101,14 @@ static void pxav2_mmc_set_bus_width(struct sdhci_host *host, int width) writeb(ctrl, host->ioaddr + SDHCI_HOST_CONTROL); } +static const struct sdhci_ops pxav1_sdhci_ops = { + .set_clock = sdhci_set_clock, + .get_max_clock = sdhci_pltfm_clk_get_max_clock, + .set_bus_width = pxav2_mmc_set_bus_width, + .reset = pxav2_reset, + .set_uhs_signaling = sdhci_set_uhs_signaling, +}; + static const struct sdhci_ops pxav2_sdhci_ops = { .set_clock = sdhci_set_clock, .get_max_clock = sdhci_pltfm_clk_get_max_clock, @@ -114,6 +122,9 @@ static const struct of_device_id sdhci_pxav2_of_match[] = { { .compatible = "mrvl,pxav2-mmc", }, + { + .compatible = "mrvl,pxav1-mmc", + }, {}, }; MODULE_DEVICE_TABLE(of, sdhci_pxav2_of_match); @@ -208,7 +219,12 @@ static int sdhci_pxav2_probe(struct platform_device *pdev) host->mmc->pm_caps |= pdata->pm_caps; } - host->ops = &pxav2_sdhci_ops; + if (match && of_device_is_compatible(dev->of_node, "mrvl,pxav1-mmc")) { + host->quirks |= SDHCI_QUIRK_NO_BUSY_IRQ | SDHCI_QUIRK_32BIT_DMA_SIZE; + host->ops = &pxav1_sdhci_ops; + } else { + host->ops = &pxav2_sdhci_ops; + } ret = sdhci_add_host(host); if (ret) From patchwork Fri Dec 2 03:13:24 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Doug Brown X-Patchwork-Id: 13062116 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 C5526C47088 for ; Fri, 2 Dec 2022 03:13:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231195AbiLBDN4 (ORCPT ); Thu, 1 Dec 2022 22:13:56 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55478 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231299AbiLBDNz (ORCPT ); Thu, 1 Dec 2022 22:13:55 -0500 Received: from mail-pg1-x52e.google.com (mail-pg1-x52e.google.com [IPv6:2607:f8b0:4864:20::52e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 03F87A9CCE for ; Thu, 1 Dec 2022 19:13:55 -0800 (PST) Received: by mail-pg1-x52e.google.com with SMTP id f9so3335581pgf.7 for ; Thu, 01 Dec 2022 19:13:54 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=schmorgal.com; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=10C9l5cM9Gx+6A1r6iqoMzAy/dFS6z3guP1T2Uf7DqQ=; b=GzFWbtk3S9t+0VjSG76aShbOV7wvNmi2SYZMEKPNNrTRGTuFIXP51tcs/kbn4fdkjo DanB1GiufsQDarHpUm64Ztphf9zHHPICk6zwyn9tU4Op3V9WYXHiHzP7lR6/I3IWBh/0 NttKDv9CXewheMn05Z/aFsl24LonisuV/Asto= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=10C9l5cM9Gx+6A1r6iqoMzAy/dFS6z3guP1T2Uf7DqQ=; b=rretdOJ/IVTuHpCoL9Y4Q/9/RDC7pcR0d6XaeIFSoCzgI/JN09LWT5HYuXqGmUr+sg sGFmhlh2uWY01X7uqE4dmSou57xekNQ7+20lKSdpH7gET8u9hUlJg5IQfoUmvdw8+2JA Fo2ZO1zBq29ZaMf1S9DEqV89Mg6hes1OS60T1McbAWuFiRkPNb8P12qQA78hmkaFOgcN P+Wmk1SbgMUwlabajDfyHLk71XZJ8oOwFTxVZNl7nhY6SXO/WTfuFo/Z08IsEZyNSR86 Vd8BUtKKOk1Bs6tw6/1T/wh+olH9xN0APyuSbB5EvXcZkEIztqvR1s62w/yRw2XCwbpi SNdg== X-Gm-Message-State: ANoB5pldHQAM/aVmB/u/IizYQt0PD1craA3h2bJu0WMdPiZGvTr+ss1E phE2thQGBD5cIAYIxNL3sIp+ag== X-Google-Smtp-Source: AA0mqf4o793oxYNk0FFPeFBWUTicJJXqgOj7ZiMm623X3fFZKUdWvG/U0vCNIQRUALcpLh8gH54DJw== X-Received: by 2002:a63:4d61:0:b0:477:b1a8:531e with SMTP id n33-20020a634d61000000b00477b1a8531emr41918713pgl.158.1669950834441; Thu, 01 Dec 2022 19:13:54 -0800 (PST) Received: from doug-ryzen-5700G.. ([192.183.212.197]) by smtp.gmail.com with ESMTPSA id jx24-20020a17090b46d800b00213202d77d9sm3708410pjb.43.2022.12.01.19.13.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 01 Dec 2022 19:13:53 -0800 (PST) From: Doug Brown To: Ulf Hansson , Adrian Hunter Cc: Rob Herring , Krzysztof Kozlowski , linux-mmc@vger.kernel.org, devicetree@vger.kernel.org, Doug Brown Subject: [PATCH v2 2/8] mmc: sdhci-pxav2: enable CONFIG_MMC_SDHCI_IO_ACCESSORS Date: Thu, 1 Dec 2022 19:13:24 -0800 Message-Id: <20221202031330.94130-3-doug@schmorgal.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221202031330.94130-1-doug@schmorgal.com> References: <20221202031330.94130-1-doug@schmorgal.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org Enable CONFIG_MMC_SDHCI_IO_ACCESSORS for the pxav2 driver. The read_w callback is needed for a silicon bug workaround in the PXA168. Signed-off-by: Doug Brown --- drivers/mmc/host/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig index 5e19a961c34d..b9e9185c86a6 100644 --- a/drivers/mmc/host/Kconfig +++ b/drivers/mmc/host/Kconfig @@ -360,6 +360,7 @@ config MMC_SDHCI_PXAV2 depends on MMC_SDHCI_PLTFM depends on ARCH_MMP || COMPILE_TEST default CPU_PXA910 + select MMC_SDHCI_IO_ACCESSORS help This selects the Marvell(R) PXAV2 SD Host Controller. If you have a PXA9XX platform with SD Host Controller From patchwork Fri Dec 2 03:13:25 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Doug Brown X-Patchwork-Id: 13062117 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 83AE1C4332F for ; Fri, 2 Dec 2022 03:14:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231426AbiLBDOA (ORCPT ); Thu, 1 Dec 2022 22:14:00 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55536 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231387AbiLBDN6 (ORCPT ); Thu, 1 Dec 2022 22:13:58 -0500 Received: from mail-pj1-x102a.google.com (mail-pj1-x102a.google.com [IPv6:2607:f8b0:4864:20::102a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 78980D49DB for ; Thu, 1 Dec 2022 19:13:57 -0800 (PST) Received: by mail-pj1-x102a.google.com with SMTP id k5so3690052pjo.5 for ; Thu, 01 Dec 2022 19:13:57 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=schmorgal.com; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=ym9YTdhefXOHHkd3Jf4XxEyW1/V8EXozYna2j5niSpo=; b=PDjsxCWo+qZ79bbBq4qHpmcDxR9sR3rSO23hLyzgQHSTrzDIOvnMZBnQcYP00pnFuz 6Q0tJqxg+6Rd9XG3zv3fOj8ww1c99qYnNB3mGBO9T8IRGx4ZryIK9m3atpCrJxfBP99t w7M4y0AQzJTZF3yKEy7YbCubW3Td4Pv85SuxY= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=ym9YTdhefXOHHkd3Jf4XxEyW1/V8EXozYna2j5niSpo=; b=vR/K+WS5dm54LnXpAbvgWSksa0ZWqnqQZM1qRnMvsSJwkC5oneaqXg0wEUOKva8Dg1 OxoeRvLMCDIqqc34Ge22ZK7GNSTf1e1HdVEPNWkUa3UaFPDZZ6LVU0D7AOnS5Z5FqIcF RbLrSO44F7vV1SKQ2WanMnIksqsBG+OgN57NG7oVAGnAnFTxuWUHQmpVujZrbzRDGNJT SDLuOtGRKL052fr4jmoRUaKxM0FihQneq2l928nRlFbeSgmV1i0eDeV+C6mRZH/gQgSN 2FLc2o4dewhKXdJ/Pd64DXM9yD6jPSzH8RNrbAEznnCC3XWrBtzzwmVbeU2Fe4WAUbG/ IMIw== X-Gm-Message-State: ANoB5plaQLWnSTOyzLXGRjNoBuSGYsOusgB0i6WZBZgCruPRei8Fq7+P GLSXjigN8gmA4vOSy5OVvcbP9g== X-Google-Smtp-Source: AA0mqf5ZYpxHSgY7GvM3UxFAtjuVFa98HNtyC+pVpnUKJeJ++FHDcyWIP/eOqg/y+5EE3Fc0EqnAow== X-Received: by 2002:a17:902:dacd:b0:189:6889:c30a with SMTP id q13-20020a170902dacd00b001896889c30amr34384066plx.6.1669950836835; Thu, 01 Dec 2022 19:13:56 -0800 (PST) Received: from doug-ryzen-5700G.. ([192.183.212.197]) by smtp.gmail.com with ESMTPSA id jx24-20020a17090b46d800b00213202d77d9sm3708410pjb.43.2022.12.01.19.13.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 01 Dec 2022 19:13:56 -0800 (PST) From: Doug Brown To: Ulf Hansson , Adrian Hunter Cc: Rob Herring , Krzysztof Kozlowski , linux-mmc@vger.kernel.org, devicetree@vger.kernel.org, Doug Brown Subject: [PATCH v2 3/8] mmc: sdhci-pxav2: add register workaround for PXA168 silicon bug Date: Thu, 1 Dec 2022 19:13:25 -0800 Message-Id: <20221202031330.94130-4-doug@schmorgal.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221202031330.94130-1-doug@schmorgal.com> References: <20221202031330.94130-1-doug@schmorgal.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org The PXA168 has a documented silicon bug that results in a data abort exception when accessing the SDHCI_HOST_VERSION register on SDH2 and SDH4 through a 16-bit read. Implement the workaround described in the errata, which performs a 32-bit read from a lower address instead. This is safe to use on all four SDH peripherals. Signed-off-by: Doug Brown --- drivers/mmc/host/sdhci-pxav2.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/mmc/host/sdhci-pxav2.c b/drivers/mmc/host/sdhci-pxav2.c index 2f9fa0ecbddd..0a16098b963f 100644 --- a/drivers/mmc/host/sdhci-pxav2.c +++ b/drivers/mmc/host/sdhci-pxav2.c @@ -80,6 +80,15 @@ static void pxav2_reset(struct sdhci_host *host, u8 mask) } } +static u16 pxav1_readw(struct sdhci_host *host, int reg) +{ + /* Workaround for data abort exception on SDH2 and SDH4 on PXA168 */ + if (reg == SDHCI_HOST_VERSION) + return readl(host->ioaddr + SDHCI_HOST_VERSION - 2) >> 16; + + return readw(host->ioaddr + reg); +} + static void pxav2_mmc_set_bus_width(struct sdhci_host *host, int width) { u8 ctrl; @@ -102,6 +111,7 @@ static void pxav2_mmc_set_bus_width(struct sdhci_host *host, int width) } static const struct sdhci_ops pxav1_sdhci_ops = { + .read_w = pxav1_readw, .set_clock = sdhci_set_clock, .get_max_clock = sdhci_pltfm_clk_get_max_clock, .set_bus_width = pxav2_mmc_set_bus_width, From patchwork Fri Dec 2 03:13:26 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Doug Brown X-Patchwork-Id: 13062118 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 4AA6CC4708E for ; Fri, 2 Dec 2022 03:14:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231299AbiLBDOC (ORCPT ); Thu, 1 Dec 2022 22:14:02 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55576 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231475AbiLBDOA (ORCPT ); Thu, 1 Dec 2022 22:14:00 -0500 Received: from mail-pg1-x533.google.com (mail-pg1-x533.google.com [IPv6:2607:f8b0:4864:20::533]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8FA3AD427D for ; Thu, 1 Dec 2022 19:13:59 -0800 (PST) Received: by mail-pg1-x533.google.com with SMTP id s196so3345555pgs.3 for ; Thu, 01 Dec 2022 19:13:59 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=schmorgal.com; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=agIvM+RESqFOi6zq2PfLhwbAmjFDfRo+ieTUEwufHOc=; b=eaVziJwbJ8GXqtHJD7dVAD9LkmXFaz+/poyw0LaBJDLiFpSyHR+1VRLe/nqkKbrDki zMFNro3K5/jF+5N2wM8g6zjqN/SUzk6j48iJrdU4dmje0CkvEX0Y8vgtCS8Zo2ChzbG1 5K1y6rNSZDThLxCrWlpCeWeEk3ZfnErSv3xZs= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=agIvM+RESqFOi6zq2PfLhwbAmjFDfRo+ieTUEwufHOc=; b=8LZwIJ1yX27LKMvuBSaxcbg/iQTyYh5wGMNna6JpDQ9/SN/yz43BxEWC+V5F8cpoZc ld9yCB91w5XktysyCgxkBiS4rwVryl6jAICgJu2T3KVD1pj5x/TfYn+awSRJUx3tTKAi J1wc1/gXm9CSNLkti0xI4SkjZ6ov65r5QLS10R/sUVZrM4CcuVBmSVn9tKW0+iYxqrat bwHyRtHrQ9UTQ2HsvCuKVuDh5EMnv/biRdFDN4X7c3hD8fJGnLojr649KJgpB9S1LE2j vQz1LOZE4QBEYGXOerOGPREyuQmXZ78iT+bE48mLZmcVt6QtmKjLKgkLCdLSddN30Wsw 7gBg== X-Gm-Message-State: ANoB5pkNO4QhD0STGslTpxF5LP082TSDv8KzIe+i00YlhLXVvt3pKvIf 3uzAiTOq21gEOQ5I5hLNPdBW/w== X-Google-Smtp-Source: AA0mqf4K1NiC1zJPzjzp/rwODq9vS7RxKPAosQIViGm6J4QjknqA1LGCxbi/8+JFxVBqnV+XLQPZlA== X-Received: by 2002:a63:e510:0:b0:476:a862:53d2 with SMTP id r16-20020a63e510000000b00476a86253d2mr42354672pgh.163.1669950839021; Thu, 01 Dec 2022 19:13:59 -0800 (PST) Received: from doug-ryzen-5700G.. ([192.183.212.197]) by smtp.gmail.com with ESMTPSA id jx24-20020a17090b46d800b00213202d77d9sm3708410pjb.43.2022.12.01.19.13.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 01 Dec 2022 19:13:58 -0800 (PST) From: Doug Brown To: Ulf Hansson , Adrian Hunter Cc: Rob Herring , Krzysztof Kozlowski , linux-mmc@vger.kernel.org, devicetree@vger.kernel.org, Doug Brown Subject: [PATCH v2 4/8] mmc: sdhci-pxav2: change clock name to match DT bindings Date: Thu, 1 Dec 2022 19:13:26 -0800 Message-Id: <20221202031330.94130-5-doug@schmorgal.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221202031330.94130-1-doug@schmorgal.com> References: <20221202031330.94130-1-doug@schmorgal.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org The devicetree bindings for this driver specify that the two allowed clock names are io and core. Change this driver to look for io, but allow any name if it fails for backwards compatibility. Follow the same pattern used in sdhci-pxav3. Signed-off-by: Doug Brown --- drivers/mmc/host/sdhci-pxav2.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/sdhci-pxav2.c b/drivers/mmc/host/sdhci-pxav2.c index 0a16098b963f..509ba5dd4a4a 100644 --- a/drivers/mmc/host/sdhci-pxav2.c +++ b/drivers/mmc/host/sdhci-pxav2.c @@ -189,7 +189,9 @@ static int sdhci_pxav2_probe(struct platform_device *pdev) pltfm_host = sdhci_priv(host); - clk = devm_clk_get(dev, "PXA-SDHCLK"); + clk = devm_clk_get(dev, "io"); + if (IS_ERR(clk)) + clk = devm_clk_get(dev, NULL); if (IS_ERR(clk)) { dev_err(dev, "failed to get io clock\n"); ret = PTR_ERR(clk); From patchwork Fri Dec 2 03:13:27 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Doug Brown X-Patchwork-Id: 13062119 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 08CA8C3A5A7 for ; Fri, 2 Dec 2022 03:14:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231629AbiLBDOG (ORCPT ); Thu, 1 Dec 2022 22:14:06 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55628 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231573AbiLBDOE (ORCPT ); Thu, 1 Dec 2022 22:14:04 -0500 Received: from mail-pf1-x432.google.com (mail-pf1-x432.google.com [IPv6:2607:f8b0:4864:20::432]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B1580D49E0 for ; Thu, 1 Dec 2022 19:14:01 -0800 (PST) Received: by mail-pf1-x432.google.com with SMTP id 124so3772981pfy.0 for ; Thu, 01 Dec 2022 19:14:01 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=schmorgal.com; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=y22VghNPhGNaubNRJ5w1ZU32tCEMhbhW0ElXOX2vO5Y=; b=YSOZoUj6dUY2q541u96Cd/bKtl0KdB811jY/M6Nd488IqnCelmEkJJTx9VKhUi6vw7 CVYM35cIqoOWwpQJq10e/CY27Bn0mk+0n6aPjv/LKi4jVUu0RkF750tm/Ofb5oEcGJin NKQLEzmePRJH5RZSQpPaIaszm3KY24aCCISnQ= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=y22VghNPhGNaubNRJ5w1ZU32tCEMhbhW0ElXOX2vO5Y=; b=aMzOxGl7Oa1eCJ2avgT2QiLFHX9kST/h7s+ySH6cMbAGem9SjheCdS16UGxDc4P76E Md7dFuGrvw4b/oQDqG+8IXg3n2Wempt+nXZV4eTVFEtg9exALuzwmGSnM1qA68LY0zoP De7vHBko1T59QekwyYaheKLubpm6lFNJZmXHVf7CQd8Akv9okAgZGTWrYaBZWdeabRCh FANFgsFrcU3zr7876IaUCFE3etQHxTzBgOeQRg1C3k6owTcl5KVfFtFwfMowjbQvQDov Nb+DZ/dFW/LmIDXi4f+UTdKFCS9ls63RYs6eV9zmuTmIC/RYdgNY0L/tWHaD9Rv2NAg8 Fr0Q== X-Gm-Message-State: ANoB5pleqAQvJNeOnmSdj66Unx8OpUJBL1uNlzQ5LknqQlF5jyIv9yqV 5pc/ZdNPStYHHPvN/E0HzwAgNplQB4PJaRA8BWZNtw== X-Google-Smtp-Source: AA0mqf50WxAzOBiAl90lZP0H57EBaa1OL/+5YTZY6Ox6TPRTIYzjNWEahEJlYdwknl4uBYMNHjpQ8g== X-Received: by 2002:a63:f201:0:b0:478:50c9:a6d with SMTP id v1-20020a63f201000000b0047850c90a6dmr12270928pgh.485.1669950841170; Thu, 01 Dec 2022 19:14:01 -0800 (PST) Received: from doug-ryzen-5700G.. ([192.183.212.197]) by smtp.gmail.com with ESMTPSA id jx24-20020a17090b46d800b00213202d77d9sm3708410pjb.43.2022.12.01.19.14.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 01 Dec 2022 19:14:00 -0800 (PST) From: Doug Brown To: Ulf Hansson , Adrian Hunter Cc: Rob Herring , Krzysztof Kozlowski , linux-mmc@vger.kernel.org, devicetree@vger.kernel.org, Doug Brown Subject: [PATCH v2 5/8] mmc: sdhci-pxav2: add optional core clock Date: Thu, 1 Dec 2022 19:13:27 -0800 Message-Id: <20221202031330.94130-6-doug@schmorgal.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221202031330.94130-1-doug@schmorgal.com> References: <20221202031330.94130-1-doug@schmorgal.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org Add ability to have an optional core clock just like the pxav3 driver. The PXA168 needs this because its SDHC controllers have separate core and io clocks that both need to be enabled. This also correctly matches the documented devicetree bindings for this driver. Signed-off-by: Doug Brown --- drivers/mmc/host/sdhci-pxav2.c | 40 ++++++++++++++++++++++++++++++---- 1 file changed, 36 insertions(+), 4 deletions(-) diff --git a/drivers/mmc/host/sdhci-pxav2.c b/drivers/mmc/host/sdhci-pxav2.c index 509ba5dd4a4a..1f0c3028987a 100644 --- a/drivers/mmc/host/sdhci-pxav2.c +++ b/drivers/mmc/host/sdhci-pxav2.c @@ -41,6 +41,10 @@ #define MMC_CARD 0x1000 #define MMC_WIDTH 0x0100 +struct sdhci_pxav2_host { + struct clk *clk_core; +}; + static void pxav2_reset(struct sdhci_host *host, u8 mask) { struct platform_device *pdev = to_platform_device(mmc_dev(host->mmc)); @@ -176,6 +180,7 @@ static int sdhci_pxav2_probe(struct platform_device *pdev) { struct sdhci_pltfm_host *pltfm_host; struct sdhci_pxa_platdata *pdata = pdev->dev.platform_data; + struct sdhci_pxav2_host *pxav2_host; struct device *dev = &pdev->dev; struct sdhci_host *host = NULL; const struct of_device_id *match; @@ -183,11 +188,12 @@ static int sdhci_pxav2_probe(struct platform_device *pdev) int ret; struct clk *clk; - host = sdhci_pltfm_init(pdev, NULL, 0); + host = sdhci_pltfm_init(pdev, NULL, sizeof(*pxav2_host)); if (IS_ERR(host)) return PTR_ERR(host); pltfm_host = sdhci_priv(host); + pxav2_host = sdhci_pltfm_priv(pltfm_host); clk = devm_clk_get(dev, "io"); if (IS_ERR(clk)) @@ -204,6 +210,15 @@ static int sdhci_pxav2_probe(struct platform_device *pdev) goto free; } + pxav2_host->clk_core = devm_clk_get(dev, "core"); + if (!IS_ERR(pxav2_host->clk_core)) { + ret = clk_prepare_enable(pxav2_host->clk_core); + if (ret) { + dev_err(&pdev->dev, "failed to enable core clock\n"); + goto disable_io_clk; + } + } + host->quirks = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_BROKEN_TIMEOUT_VAL | SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN; @@ -240,17 +255,34 @@ static int sdhci_pxav2_probe(struct platform_device *pdev) ret = sdhci_add_host(host); if (ret) - goto disable_clk; + goto disable_core_clk; return 0; -disable_clk: +disable_core_clk: + if (!IS_ERR(pxav2_host->clk_core)) + clk_disable_unprepare(pxav2_host->clk_core); +disable_io_clk: clk_disable_unprepare(clk); free: sdhci_pltfm_free(pdev); return ret; } +static int sdhci_pxav2_remove(struct platform_device *pdev) +{ + struct sdhci_host *host = platform_get_drvdata(pdev); + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct sdhci_pxav2_host *pxav2_host = sdhci_pltfm_priv(pltfm_host); + + int ret = sdhci_pltfm_unregister(pdev); + + if (!IS_ERR(pxav2_host->clk_core)) + clk_disable_unprepare(pxav2_host->clk_core); + + return ret; +} + static struct platform_driver sdhci_pxav2_driver = { .driver = { .name = "sdhci-pxav2", @@ -259,7 +291,7 @@ static struct platform_driver sdhci_pxav2_driver = { .pm = &sdhci_pltfm_pmops, }, .probe = sdhci_pxav2_probe, - .remove = sdhci_pltfm_unregister, + .remove = sdhci_pxav2_remove, }; module_platform_driver(sdhci_pxav2_driver); From patchwork Fri Dec 2 03:13:28 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Doug Brown X-Patchwork-Id: 13062120 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 34893C47088 for ; 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([192.183.212.197]) by smtp.gmail.com with ESMTPSA id jx24-20020a17090b46d800b00213202d77d9sm3708410pjb.43.2022.12.01.19.14.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 01 Dec 2022 19:14:03 -0800 (PST) From: Doug Brown To: Ulf Hansson , Adrian Hunter Cc: Rob Herring , Krzysztof Kozlowski , linux-mmc@vger.kernel.org, devicetree@vger.kernel.org, Doug Brown Subject: [PATCH v2 6/8] mmc: sdhci-pxav2: add SDIO card IRQ workaround for PXA168 V1 controller Date: Thu, 1 Dec 2022 19:13:28 -0800 Message-Id: <20221202031330.94130-7-doug@schmorgal.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221202031330.94130-1-doug@schmorgal.com> References: <20221202031330.94130-1-doug@schmorgal.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org The PXA168 has a documented silicon bug that causes SDIO card IRQs to be missed. Implement the first half of the suggested workaround, which involves resetting the data port logic and issuing a dummy CMD0 to restart the clock. Signed-off-by: Doug Brown --- drivers/mmc/host/sdhci-pxav2.c | 49 ++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) diff --git a/drivers/mmc/host/sdhci-pxav2.c b/drivers/mmc/host/sdhci-pxav2.c index 1f0c3028987a..912b2aad9f2e 100644 --- a/drivers/mmc/host/sdhci-pxav2.c +++ b/drivers/mmc/host/sdhci-pxav2.c @@ -20,6 +20,8 @@ #include #include #include +#include +#include #include "sdhci.h" #include "sdhci-pltfm.h" @@ -43,6 +45,7 @@ struct sdhci_pxav2_host { struct clk *clk_core; + struct mmc_request *sdio_mrq; }; static void pxav2_reset(struct sdhci_host *host, u8 mask) @@ -93,6 +96,50 @@ static u16 pxav1_readw(struct sdhci_host *host, int reg) return readw(host->ioaddr + reg); } +static u32 pxav1_irq(struct sdhci_host *host, u32 intmask) +{ + struct sdhci_pxav2_host *pxav2_host = sdhci_pltfm_priv(sdhci_priv(host)); + + if (pxav2_host->sdio_mrq && (intmask & SDHCI_INT_CMD_MASK)) { + /* The dummy CMD0 for the SDIO workaround just completed */ + sdhci_writel(host, intmask & SDHCI_INT_CMD_MASK, SDHCI_INT_STATUS); + intmask &= ~SDHCI_INT_CMD_MASK; + mmc_request_done(host->mmc, pxav2_host->sdio_mrq); + pxav2_host->sdio_mrq = NULL; + } + + return intmask; +} + +static void pxav1_request_done(struct sdhci_host *host, struct mmc_request *mrq) +{ + u16 tmp; + struct sdhci_pxav2_host *pxav2_host; + + /* If this is an SDIO command, perform errata workaround for silicon bug */ + if (mrq->cmd && !mrq->cmd->error && + (mrq->cmd->opcode == SD_IO_RW_DIRECT || + mrq->cmd->opcode == SD_IO_RW_EXTENDED)) { + /* Reset data port */ + tmp = readw(host->ioaddr + SDHCI_TIMEOUT_CONTROL); + tmp |= 0x400; + writew(tmp, host->ioaddr + SDHCI_TIMEOUT_CONTROL); + + /* Clock is now stopped, so restart it by sending a dummy CMD0 */ + pxav2_host = sdhci_pltfm_priv(sdhci_priv(host)); + pxav2_host->sdio_mrq = mrq; + sdhci_writel(host, 0, SDHCI_ARGUMENT); + sdhci_writew(host, 0, SDHCI_TRANSFER_MODE); + sdhci_writew(host, SDHCI_MAKE_CMD(MMC_GO_IDLE_STATE, SDHCI_CMD_RESP_NONE), + SDHCI_COMMAND); + + /* Don't finish this request until the dummy CMD0 finishes */ + return; + } + + mmc_request_done(host->mmc, mrq); +} + static void pxav2_mmc_set_bus_width(struct sdhci_host *host, int width) { u8 ctrl; @@ -117,10 +164,12 @@ static void pxav2_mmc_set_bus_width(struct sdhci_host *host, int width) static const struct sdhci_ops pxav1_sdhci_ops = { .read_w = pxav1_readw, .set_clock = sdhci_set_clock, + .irq = pxav1_irq, .get_max_clock = sdhci_pltfm_clk_get_max_clock, .set_bus_width = pxav2_mmc_set_bus_width, .reset = pxav2_reset, .set_uhs_signaling = sdhci_set_uhs_signaling, + .request_done = pxav1_request_done, }; static const struct sdhci_ops pxav2_sdhci_ops = { From patchwork Fri Dec 2 03:13:29 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Doug Brown X-Patchwork-Id: 13062121 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 D2458C4708E for ; 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([192.183.212.197]) by smtp.gmail.com with ESMTPSA id jx24-20020a17090b46d800b00213202d77d9sm3708410pjb.43.2022.12.01.19.14.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 01 Dec 2022 19:14:05 -0800 (PST) From: Doug Brown To: Ulf Hansson , Adrian Hunter Cc: Rob Herring , Krzysztof Kozlowski , linux-mmc@vger.kernel.org, devicetree@vger.kernel.org, Doug Brown Subject: [PATCH v2 7/8] mmc: sdhci-pxav2: add optional pinctrl for SDIO IRQ workaround Date: Thu, 1 Dec 2022 19:13:29 -0800 Message-Id: <20221202031330.94130-8-doug@schmorgal.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221202031330.94130-1-doug@schmorgal.com> References: <20221202031330.94130-1-doug@schmorgal.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org The PXA168 errata recommends that the CMD signal should be detached from the SD bus while performing the dummy CMD0 to restart the clock. Implement this using pinctrl states. Signed-off-by: Doug Brown --- drivers/mmc/host/sdhci-pxav2.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/drivers/mmc/host/sdhci-pxav2.c b/drivers/mmc/host/sdhci-pxav2.c index 912b2aad9f2e..88927549b425 100644 --- a/drivers/mmc/host/sdhci-pxav2.c +++ b/drivers/mmc/host/sdhci-pxav2.c @@ -22,6 +22,7 @@ #include #include #include +#include #include "sdhci.h" #include "sdhci-pltfm.h" @@ -46,6 +47,9 @@ struct sdhci_pxav2_host { struct clk *clk_core; struct mmc_request *sdio_mrq; + struct pinctrl *pinctrl; + struct pinctrl_state *pins_default; + struct pinctrl_state *pins_cmd_gpio; }; static void pxav2_reset(struct sdhci_host *host, u8 mask) @@ -104,6 +108,11 @@ static u32 pxav1_irq(struct sdhci_host *host, u32 intmask) /* The dummy CMD0 for the SDIO workaround just completed */ sdhci_writel(host, intmask & SDHCI_INT_CMD_MASK, SDHCI_INT_STATUS); intmask &= ~SDHCI_INT_CMD_MASK; + + /* Restore MMC function to CMD pin */ + if (pxav2_host->pinctrl && pxav2_host->pins_default) + pinctrl_select_state(pxav2_host->pinctrl, pxav2_host->pins_default); + mmc_request_done(host->mmc, pxav2_host->sdio_mrq); pxav2_host->sdio_mrq = NULL; } @@ -128,6 +137,11 @@ static void pxav1_request_done(struct sdhci_host *host, struct mmc_request *mrq) /* Clock is now stopped, so restart it by sending a dummy CMD0 */ pxav2_host = sdhci_pltfm_priv(sdhci_priv(host)); pxav2_host->sdio_mrq = mrq; + + /* Set CMD as high output rather than MMC function while we do CMD0 */ + if (pxav2_host->pinctrl && pxav2_host->pins_cmd_gpio) + pinctrl_select_state(pxav2_host->pinctrl, pxav2_host->pins_cmd_gpio); + sdhci_writel(host, 0, SDHCI_ARGUMENT); sdhci_writew(host, 0, SDHCI_TRANSFER_MODE); sdhci_writew(host, SDHCI_MAKE_CMD(MMC_GO_IDLE_STATE, SDHCI_CMD_RESP_NONE), @@ -298,6 +312,21 @@ static int sdhci_pxav2_probe(struct platform_device *pdev) if (match && of_device_is_compatible(dev->of_node, "mrvl,pxav1-mmc")) { host->quirks |= SDHCI_QUIRK_NO_BUSY_IRQ | SDHCI_QUIRK_32BIT_DMA_SIZE; host->ops = &pxav1_sdhci_ops; + + /* Set up optional pinctrl for PXA168 SDIO IRQ fix */ + pxav2_host->pinctrl = devm_pinctrl_get(&pdev->dev); + if (!IS_ERR(pxav2_host->pinctrl)) { + pxav2_host->pins_cmd_gpio = pinctrl_lookup_state(pxav2_host->pinctrl, + "state_cmd_gpio"); + if (IS_ERR(pxav2_host->pins_cmd_gpio)) + pxav2_host->pins_cmd_gpio = NULL; + pxav2_host->pins_default = pinctrl_lookup_state(pxav2_host->pinctrl, + "default"); + if (IS_ERR(pxav2_host->pins_default)) + pxav2_host->pins_default = NULL; + } else { + pxav2_host->pinctrl = NULL; + } } else { host->ops = &pxav2_sdhci_ops; } From patchwork Fri Dec 2 03:13:30 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Doug Brown X-Patchwork-Id: 13062122 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 4D88BC47088 for ; Fri, 2 Dec 2022 03:14:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231475AbiLBDOL (ORCPT ); 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([192.183.212.197]) by smtp.gmail.com with ESMTPSA id jx24-20020a17090b46d800b00213202d77d9sm3708410pjb.43.2022.12.01.19.14.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 01 Dec 2022 19:14:07 -0800 (PST) From: Doug Brown To: Ulf Hansson , Adrian Hunter Cc: Rob Herring , Krzysztof Kozlowski , linux-mmc@vger.kernel.org, devicetree@vger.kernel.org, Doug Brown Subject: [PATCH v2 8/8] dt-bindings: mmc: sdhci-pxa: add pxav1 Date: Thu, 1 Dec 2022 19:13:30 -0800 Message-Id: <20221202031330.94130-9-doug@schmorgal.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221202031330.94130-1-doug@schmorgal.com> References: <20221202031330.94130-1-doug@schmorgal.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org Add a compatible for the pxav1 controller in the PXA168, along with optional pinctrl properties to use for an errata workaround. Signed-off-by: Doug Brown Reviewed-by: Krzysztof Kozlowski --- .../devicetree/bindings/mmc/sdhci-pxa.yaml | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/mmc/sdhci-pxa.yaml b/Documentation/devicetree/bindings/mmc/sdhci-pxa.yaml index 1c87f4218e18..8bb0eca506e5 100644 --- a/Documentation/devicetree/bindings/mmc/sdhci-pxa.yaml +++ b/Documentation/devicetree/bindings/mmc/sdhci-pxa.yaml @@ -4,7 +4,7 @@ $id: http://devicetree.org/schemas/mmc/sdhci-pxa.yaml# $schema: http://devicetree.org/meta-schemas/core.yaml# -title: Marvell PXA SDHCI v2/v3 bindings +title: Marvell PXA SDHCI v1/v2/v3 bindings maintainers: - Ulf Hansson @@ -34,6 +34,7 @@ allOf: properties: compatible: enum: + - mrvl,pxav1-mmc - mrvl,pxav2-mmc - mrvl,pxav3-mmc - marvell,armada-380-sdhci @@ -61,6 +62,22 @@ properties: - const: io - const: core + pinctrl-names: + description: + Optional for supporting PXA168 SDIO IRQ errata to switch CMD pin between SDIO CMD and + GPIO mode. + items: + - const: default + - const: state_cmd_gpio + + pinctrl-0: + description: + Should contain default pinctrl. + + pinctrl-1: + description: + Should switch CMD pin to GPIO mode as a high output. + mrvl,clk-delay-cycles: description: Specify a number of cycles to delay for tuning. $ref: /schemas/types.yaml#/definitions/uint32