linux-kernel - [PATCH 2/4] mmc: host/sdhci-msm: Add SoC specific compatibles

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Date:   Sat, 30 Apr 2022 03:38:31 +0530
From:   Bhupesh Sharma <bhupesh.sharma@...aro.org>
To:     linux-mmc@...r.kernel.org
Cc:     bhupesh.sharma@...aro.org, bhupesh.linux@...il.com,
        agross@...nel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        robh+dt@...nel.org, bjorn.andersson@...aro.org,
        ulf.hansson@...aro.org, robh@...nel.org
Subject: [PATCH 2/4] mmc: host/sdhci-msm: Add SoC specific compatibles

Since Qualcomm device-trees already use SoC specific compatibles
for describing the 'sdhci-msm' nodes, it makes sense to add the support
for the same in the driver as well.

Keep the old deprecated compatible strings still in the driver,
to ensure backward compatibility with older device-trees.

Cc: Ulf Hansson <ulf.hansson@...aro.org>
Signed-off-by: Bhupesh Sharma <bhupesh.sharma@...aro.org>
---
 drivers/mmc/host/sdhci-msm.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
index 50c71e0ba5e4..2de8d115a37a 100644
--- a/drivers/mmc/host/sdhci-msm.c
+++ b/drivers/mmc/host/sdhci-msm.c
@@ -2434,8 +2434,31 @@ static const struct sdhci_msm_variant_info sdm845_sdhci_var = {
 };
 
 static const struct of_device_id sdhci_msm_dt_match[] = {
+	 /* Following two entries are deprecated (kept only for backward compatibility) */
 	{.compatible = "qcom,sdhci-msm-v4", .data = &sdhci_msm_mci_var},
 	{.compatible = "qcom,sdhci-msm-v5", .data = &sdhci_msm_v5_var},
+	/* Add entries for sdcc versions less than 5.0 here */
+	{.compatible = "qcom,apq8084-sdhci", .data = &sdhci_msm_mci_var},
+	{.compatible = "qcom,msm8226-sdhci", .data = &sdhci_msm_mci_var},
+	{.compatible = "qcom,msm8916-sdhci", .data = &sdhci_msm_mci_var},
+	{.compatible = "qcom,msm8953-sdhci", .data = &sdhci_msm_mci_var},
+	{.compatible = "qcom,msm8974-sdhci", .data = &sdhci_msm_mci_var},
+	{.compatible = "qcom,msm8992-sdhci", .data = &sdhci_msm_mci_var},
+	{.compatible = "qcom,msm8994-sdhci", .data = &sdhci_msm_mci_var},
+	{.compatible = "qcom,msm8996-sdhci", .data = &sdhci_msm_mci_var},
+	/*
+	 * Add entries for sdcc version 5.0 here. For SDCC version 5.0.0,
+	 * MCI registers are removed from SDCC interface and some registers
+	 * are moved to HC.
+	 */
+	{.compatible = "qcom,qcs404-sdhci", .data = &sdhci_msm_v5_var},
+	{.compatible = "qcom,sdx55-sdhci",  .data = &sdhci_msm_v5_var},
+	{.compatible = "qcom,sdm630-sdhci", .data = &sdhci_msm_v5_var},
+	{.compatible = "qcom,sm6125-sdhci", .data = &sdhci_msm_v5_var},
+	{.compatible = "qcom,sm6350-sdhci", .data = &sdhci_msm_v5_var},
+	{.compatible = "qcom,sm8250-sdhci", .data = &sdhci_msm_v5_var},
+	{.compatible = "qcom,sc7280-sdhci", .data = &sdhci_msm_v5_var},
+	/* Add entries where soc specific handling is required, here */
 	{.compatible = "qcom,sdm845-sdhci", .data = &sdm845_sdhci_var},
 	{.compatible = "qcom,sc7180-sdhci", .data = &sdm845_sdhci_var},
 	{},
-- 
2.35.1