linux-kernel - [PATCH 09/10] arm64: dts: imx8ulp-evk: add 100MHz/200MHz pinctrl setting for eMMC

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Date:   Sun, 25 Jun 2023 20:42:37 +0800
From:   "Peng Fan (OSS)" <peng.fan@....nxp.com>
To:     robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        shawnguo@...nel.org, s.hauer@...gutronix.de
Cc:     kernel@...gutronix.de, festevam@...il.com, linux-imx@....com,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, Haibo Chen <haibo.chen@....com>,
        Sherry Sun <sherry.sun@....com>, Peng Fan <peng.fan@....com>
Subject: [PATCH 09/10] arm64: dts: imx8ulp-evk: add 100MHz/200MHz pinctrl setting for eMMC

From: Haibo Chen <haibo.chen@....com>

Add 100MHz and 200MHz pinctrl setting for eMMC, and enable 8 bit bus mode
to config the eMMC work at HS400ES mode.

Also update to use Standard Drive Strength for USDHC pad to get a better
signal quality per Hardware team suggests.

Reviewed-by: Sherry Sun <sherry.sun@....com>
Signed-off-by: Haibo Chen <haibo.chen@....com>
Signed-off-by: Peng Fan <peng.fan@....com>
---
 arch/arm64/boot/dts/freescale/imx8ulp-evk.dts | 26 ++++++++++---------
 1 file changed, 14 insertions(+), 12 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts b/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts
index e459dc35e469..ab7af705bbca 100644
--- a/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts
@@ -121,9 +121,11 @@ &lpuart5 {
 };
 
 &usdhc0 {
-	pinctrl-names = "default", "sleep";
+	pinctrl-names = "default", "state_100mhz", "state_200mhz", "sleep";
 	pinctrl-0 = <&pinctrl_usdhc0>;
 	pinctrl-1 = <&pinctrl_usdhc0>;
+	pinctrl-2 = <&pinctrl_usdhc0>;
+	pinctrl-3 = <&pinctrl_usdhc0>;
 	non-removable;
 	bus-width = <8>;
 	status = "okay";
@@ -202,17 +204,17 @@ MX8ULP_PAD_PTF15__LPUART5_RX	0x3
 
 	pinctrl_usdhc0: usdhc0grp {
 		fsl,pins = <
-			MX8ULP_PAD_PTD1__SDHC0_CMD	0x43
-			MX8ULP_PAD_PTD2__SDHC0_CLK	0x10042
-			MX8ULP_PAD_PTD10__SDHC0_D0	0x43
-			MX8ULP_PAD_PTD9__SDHC0_D1	0x43
-			MX8ULP_PAD_PTD8__SDHC0_D2	0x43
-			MX8ULP_PAD_PTD7__SDHC0_D3	0x43
-			MX8ULP_PAD_PTD6__SDHC0_D4	0x43
-			MX8ULP_PAD_PTD5__SDHC0_D5	0x43
-			MX8ULP_PAD_PTD4__SDHC0_D6	0x43
-			MX8ULP_PAD_PTD3__SDHC0_D7	0x43
-			MX8ULP_PAD_PTD11__SDHC0_DQS	0x10042
+			MX8ULP_PAD_PTD1__SDHC0_CMD	0x3
+			MX8ULP_PAD_PTD2__SDHC0_CLK	0x10002
+			MX8ULP_PAD_PTD10__SDHC0_D0	0x3
+			MX8ULP_PAD_PTD9__SDHC0_D1	0x3
+			MX8ULP_PAD_PTD8__SDHC0_D2	0x3
+			MX8ULP_PAD_PTD7__SDHC0_D3	0x3
+			MX8ULP_PAD_PTD6__SDHC0_D4	0x3
+			MX8ULP_PAD_PTD5__SDHC0_D5	0x3
+			MX8ULP_PAD_PTD4__SDHC0_D6	0x3
+			MX8ULP_PAD_PTD3__SDHC0_D7	0x3
+			MX8ULP_PAD_PTD11__SDHC0_DQS	0x10002
 		>;
 	};
 };
-- 
2.37.1