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Message-ID: <20240521211029.1236094-4-jonas@kwiboo.se>
Date: Tue, 21 May 2024 21:10:06 +0000
From: Jonas Karlman <jonas@...boo.se>
To: Heiko Stuebner <heiko@...ech.de>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Sjoerd Simons <sjoerd@...labora.com>, Akash Gajjar
 <akash@...nedev.com>
Cc: devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org, Jonas
 Karlman <jonas@...boo.se>
Subject: [PATCH 03/13] arm64: dts: rockchip: rk3308-rock-pi-s: Fix SD NAND and eMMC init

Radxa ROCK Pi S have optional onboard SD NAND on board revision v1.1,
v1.2 and v1.3, revision v1.5 changed to use optional onboard eMMC.

The optional SD NAND typically fails to initialize:

  mmc_host mmc0: Bus speed (slot 0) = 400000Hz (slot req 400000Hz, actual 400000HZ div = 0)
  mmc0: error -110 whilst initialising SD card
  mmc_host mmc0: Bus speed (slot 0) = 300000Hz (slot req 300000Hz, actual 300000HZ div = 0)
  mmc0: error -110 whilst initialising SD card
  mmc_host mmc0: Bus speed (slot 0) = 200000Hz (slot req 200000Hz, actual 200000HZ div = 0)
  mmc0: error -110 whilst initialising SD card
  mmc_host mmc0: Bus speed (slot 0) = 100000Hz (slot req 100000Hz, actual 100000HZ div = 0)
  mmc0: error -110 whilst initialising SD card

Add pinctrl and cap-sd-highspeed to fix SD NAND initialization. Also
drop bus-width and mmc-hs200-1_8v to fix eMMC initialization on the new
v1.5 board revision, only 3v3 signal voltage is used.

Fixes: 2e04c25b1320 ("arm64: dts: rockchip: add ROCK Pi S DTS support")
Signed-off-by: Jonas Karlman <jonas@...boo.se>
---
Hardware revision changes can be found at:
- https://wiki.radxa.com/RockpiS/hardware/revisions
- https://docs.radxa.com/en/rockpi/rockpis/hardware/hardware-revision
---
 arch/arm64/boot/dts/rockchip/rk3308-rock-pi-s.dts | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3308-rock-pi-s.dts b/arch/arm64/boot/dts/rockchip/rk3308-rock-pi-s.dts
index b47fe02c33fb..84f4b4a44644 100644
--- a/arch/arm64/boot/dts/rockchip/rk3308-rock-pi-s.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3308-rock-pi-s.dts
@@ -126,10 +126,12 @@ &cpu0 {
 };
 
 &emmc {
-	bus-width = <4>;
 	cap-mmc-highspeed;
-	mmc-hs200-1_8v;
+	cap-sd-highspeed;
+	no-sdio;
 	non-removable;
+	pinctrl-names = "default";
+	pinctrl-0 = <&emmc_bus8 &emmc_clk &emmc_cmd>;
 	vmmc-supply = <&vcc_io>;
 	status = "okay";
 };
-- 
2.43.2


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