mmc: mtk-sd: add support for config found in mt7620 family SOCs.

mt7620 family MIPS SOCs contain the mtk-sd silicon.
Add support for this.

Signed-off-by: NeilBrown <neil@brown.name>
Reviewed-by: Chaotian Jing <chaotian.jing@mediatek.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/Documentation/devicetree/bindings/mmc/mtk-sd.txt b/Documentation/devicetree/bindings/mmc/mtk-sd.txt
index 91a2ec5..8a532f4 100644 (file)
--- a/Documentation/devicetree/bindings/mmc/mtk-sd.txt
+++ b/Documentation/devicetree/bindings/mmc/mtk-sd.txt
@@ -16,6 +16,7 @@ Required properties:
        "mediatek,mt2712-mmc": for mmc host ip compatible with mt2712
        "mediatek,mt7622-mmc": for MT7622 SoC
        "mediatek,mt7623-mmc", "mediatek,mt2701-mmc": for MT7623 SoC
+       "mediatek,mt7620-mmc", for MT7621 SoC (and others)
 
 - reg: physical base address of the controller and length
 - interrupts: Should contain MSDC interrupt number

diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c
index 469d4a7..0c2be4f 100644 (file)
--- a/drivers/mmc/host/mtk-sd.c
+++ b/drivers/mmc/host/mtk-sd.c
@@ -517,6 +517,17 @@ static const struct mtk_mmc_compatible mt8516_compat = {
        .stop_clk_fix = true,
 };
 
+static const struct mtk_mmc_compatible mt7620_compat = {
+       .clk_div_bits = 8,
+       .hs400_tune = false,
+       .pad_tune_reg = MSDC_PAD_TUNE,
+       .async_fifo = false,
+       .data_tune = false,
+       .busy_check = false,
+       .stop_clk_fix = false,
+       .enhance_rx = false,
+};
+
 static const struct of_device_id msdc_of_ids[] = {
        { .compatible = "mediatek,mt8135-mmc", .data = &mt8135_compat},
        { .compatible = "mediatek,mt8173-mmc", .data = &mt8173_compat},
@@ -525,6 +536,7 @@ static const struct of_device_id msdc_of_ids[] = {
        { .compatible = "mediatek,mt2712-mmc", .data = &mt2712_compat},
        { .compatible = "mediatek,mt7622-mmc", .data = &mt7622_compat},
        { .compatible = "mediatek,mt8516-mmc", .data = &mt8516_compat},
+       { .compatible = "mediatek,mt7620-mmc", .data = &mt7620_compat},
        {}
 };
 MODULE_DEVICE_TABLE(of, msdc_of_ids);