linux-kernel - [PATCH] arm64: dts: hi6220: add sd-uhs- properties into dwmmc

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Date:   Wed, 31 Aug 2016 21:10:58 +0800
From:   Guodong Xu <guodong.xu@...aro.org>
To:     xuwei5@...ilicon.com, robh+dt@...nel.org, mark.rutland@....com,
        catalin.marinas@....com, will.deacon@....com
Cc:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, Guodong Xu <guodong.xu@...aro.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Jaehoon Chung <jh80.chung@...sung.com>,
        Jinguojun <kid.jin@...ilicon.com>
Subject: [PATCH] arm64: dts: hi6220: add sd-uhs- properties into dwmmc_1

With these properties added, sd cards inserted into hikey can work at UHS
mode if they have such capability.

Note, this depends on HiKey UHS-SD support patch [1] to work properly.
If you didn't add this patch, but added sd-uhs- properties into dwmmc_1,
then sd cards cannot work. As of this post, patch [1] has been integrated
into maintainer's next branch [2].

[1]: [V4] mmc: dw_mmc-k3: UHS-SD card for Hisilicon Hikey,
 https://patchwork.kernel.org/patch/9262515/
[2]: https://git.linaro.org/people/ulf.hansson/mmc.git next
 commit a8a5b2909cfc ("mmc: dw_mmc: k3: UHS-SD card for Hisilicon Hikey")

cc: Ulf Hansson <ulf.hansson@...aro.org>
cc: Jaehoon Chung <jh80.chung@...sung.com>
cc: Jinguojun <kid.jin@...ilicon.com>
Signed-off-by: Guodong Xu <guodong.xu@...aro.org>
---
 arch/arm64/boot/dts/hisilicon/hi6220.dtsi | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm64/boot/dts/hisilicon/hi6220.dtsi b/arch/arm64/boot/dts/hisilicon/hi6220.dtsi
index 63608e9..17839db 100644
--- a/arch/arm64/boot/dts/hisilicon/hi6220.dtsi
+++ b/arch/arm64/boot/dts/hisilicon/hi6220.dtsi
@@ -785,6 +785,9 @@
 			card-detect-delay = <200>;
 			hisilicon,peripheral-syscon = <&ao_ctrl>;
 			cap-sd-highspeed;
+			sd-uhs-sdr12;
+			sd-uhs-sdr25;
+			sd-uhs-sdr50;
 			reg = <0x0 0xf723e000 0x0 0x1000>;
 			interrupts = <0x0 0x49 0x4>;
 			#address-cells = <0x1>;
-- 
1.9.1