diff mbox series

[2/3] arm64: dts: rockchip: fix RockPro64 sdhci settings

Message ID 20191003215036.15023-2-smoch@web.de (mailing list archive)
State New, archived
Headers show
Series [1/3] arm64: dts: rockchip: fix RockPro64 vdd-log regulator settings | expand

Commit Message

Soeren Moch Oct. 3, 2019, 9:50 p.m. UTC 
The RockPro64 schematics [1], [2] show that the rk3399 EMMC_STRB pin is
connected to the RESET pin instead of the DATA_STROBE pin of the eMMC module.
So the data strobe cannot be used for its intended purpose on this board,
and so the HS400 eMMC mode is not functional. Limit the controller to HS200.

[1] http://files.pine64.org/doc/rockpro64/rockpro64_v21-SCH.pdf
[2] http://files.pine64.org/doc/rock64/PINE64_eMMC_Module_20170719.pdf

Fixes: e4f3fb490967 ("arm64: dts: rockchip: add initial dts support for Rockpro64")
Signed-off-by: Soeren Moch <smoch@web.de>
---
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: linux-rockchip@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--
2.17.1

Comments

Heiko Stuebner Oct. 4, 2019, 8:05 p.m. UTC | #1 
Am Donnerstag, 3. Oktober 2019, 23:50:35 CEST schrieb Soeren Moch:
> The RockPro64 schematics [1], [2] show that the rk3399 EMMC_STRB pin is
> connected to the RESET pin instead of the DATA_STROBE pin of the eMMC module.
> So the data strobe cannot be used for its intended purpose on this board,
> and so the HS400 eMMC mode is not functional. Limit the controller to HS200.
> 
> [1] http://files.pine64.org/doc/rockpro64/rockpro64_v21-SCH.pdf
> [2] http://files.pine64.org/doc/rock64/PINE64_eMMC_Module_20170719.pdf
> 
> Fixes: e4f3fb490967 ("arm64: dts: rockchip: add initial dts support for Rockpro64")
> Signed-off-by: Soeren Moch <smoch@web.de>

applied as fix for 5.4

Thanks
Heiko
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts b/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts
index 845eb070b5b0..2e44dae4865a 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts
@@ -636,8 +636,7 @@ 

 &sdhci {
 	bus-width = <8>;
-	mmc-hs400-1_8v;
-	mmc-hs400-enhanced-strobe;
+	mmc-hs200-1_8v;
 	non-removable;
 	status = "okay";
 };