[PATCH] dts64: mt7622: fix slow sd card access

[PATCH] dts64: mt7622: fix slow sd card access

[Frank Wunderlich]

From: Frank Wunderlich <frank-w@public-files.de>

- change sdcard (mmc1) to uhs by change vqmmc-supply to 1V8 because driver
  maps pinctrl depending on this
- add reset-control for mmc1 like it's done for mmc0/emmc

Fixes: 2c002a3049f7 ("arm64: dts: mt7622: add mmc related device nodes")
Fixes: 0b6286dd96c0 ("arm64: dts: mt7622: add bananapi BPI-R64 board")
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
---
 arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts | 3 ++-
 arch/arm64/boot/dts/mediatek/mt7622.dtsi                 | 2 ++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts b/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts
index 2f77dc40b9b8..916ca89ab8eb 100644
--- a/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts
+++ b/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts
@@ -232,10 +232,11 @@ &mmc1 {
 	bus-width = <4>;
 	max-frequency = <50000000>;
 	cap-sd-highspeed;
+	mmc-hs200-1_8v;
 	r_smpl = <1>;
 	cd-gpios = <&pio 81 GPIO_ACTIVE_LOW>;
 	vmmc-supply = <&reg_3p3v>;
-	vqmmc-supply = <&reg_3p3v>;
+	vqmmc-supply = <&reg_1p8v>;
 	assigned-clocks = <&topckgen CLK_TOP_MSDC30_1_SEL>;
 	assigned-clock-parents = <&topckgen CLK_TOP_UNIV48M>;
 };
diff --git a/arch/arm64/boot/dts/mediatek/mt7622.dtsi b/arch/arm64/boot/dts/mediatek/mt7622.dtsi
index 5b9ec032ce8d..7c6d871538a6 100644
--- a/arch/arm64/boot/dts/mediatek/mt7622.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt7622.dtsi
@@ -698,6 +698,8 @@ mmc1: mmc@11240000 {
 		clocks = <&pericfg CLK_PERI_MSDC30_1_PD>,
 			 <&topckgen CLK_TOP_AXI_SEL>;
 		clock-names = "source", "hclk";
+		resets = <&pericfg MT7622_PERI_MSDC1_SW_RST>;
+		reset-names = "hrst";
 		status = "disabled";
 	};
 
-- 
2.25.1


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

Re: [PATCH] dts64: mt7622: fix slow sd card access

[Frank Wunderlich]

I guess issue is caused by incompatible setting in uboot,but have not found which exactly so i handled it like emmc.

If patch is ready to be applied please add 

Cc: stable@vger.kernel.org

because all kernel versions are affected (tested at least in 5.4 and 5.9). If i need to create a v2,i will add it

@sean/ryder/wenbin can you tell me if sd on mt7622/bpi-r64 is maybe capable of hs400?
regards Frank

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel