[PATCH 03/10] dts: aspeed: ast2600: Support SDR50 for SD device

Chin-Ting Kuo chin-ting_kuo at aspeedtech.com
Wed Sep 22 20:31:09 AEST 2021


The maximum frequency for SD controller on AST2600 EVB is
100MHz. In order to achieve 100MHz, sd-uhs-sdr50 property
should be added and the driver will set the SDR50 supported
bit in capability 2 register during probing stage.

Signed-off-by: Chin-Ting Kuo <chin-ting_kuo at aspeedtech.com>
---
 arch/arm/boot/dts/aspeed-ast2600-evb.dts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/boot/dts/aspeed-ast2600-evb.dts b/arch/arm/boot/dts/aspeed-ast2600-evb.dts
index b7eb552640cb..4551dba499c2 100644
--- a/arch/arm/boot/dts/aspeed-ast2600-evb.dts
+++ b/arch/arm/boot/dts/aspeed-ast2600-evb.dts
@@ -280,6 +280,7 @@
 &sdhci0 {
 	status = "okay";
 	bus-width = <4>;
+	sd-uhs-sdr50;
 	max-frequency = <100000000>;
 	sdhci-drive-type = /bits/ 8 <3>;
 	sdhci-caps-mask = <0x7 0x0>;
@@ -292,6 +293,7 @@
 &sdhci1 {
 	status = "okay";
 	bus-width = <4>;
+	sd-uhs-sdr50;
 	max-frequency = <100000000>;
 	sdhci-drive-type = /bits/ 8 <3>;
 	sdhci-caps-mask = <0x7 0x0>;
-- 
2.17.1



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