linux-kernel - [PATCH v2 02/13] arm64: dts: ti: k3-j7200: Enable SDHCI nodes at the board level

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Date:   Tue, 8 Aug 2023 08:34:46 -0500
From:   Andrew Davis <afd@...com>
To:     Nishanth Menon <nm@...com>, Vignesh Raghavendra <vigneshr@...com>,
        Tero Kristo <kristo@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>, Dhruva Gole <d-gole@...com>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Andrew Davis <afd@...com>
Subject: [PATCH v2 02/13] arm64: dts: ti: k3-j7200: Enable SDHCI nodes at the board level

SDHCI nodes defined in the top-level J7200 SoC dtsi files are incomplete
and will not be functional unless they are extended.

As the attached SD/eMMC is only known about at the board integration level,
these nodes should only be enabled when provided with this information.

Disable the SDHCI nodes in the dtsi files and only enable the ones that
are actually pinned out on a given board.

Signed-off-by: Andrew Davis <afd@...com>
---
 arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts | 2 ++
 arch/arm64/boot/dts/ti/k3-j7200-main.dtsi             | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts b/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts
index 92a5414911729..dee9056f56051 100644
--- a/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts
+++ b/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts
@@ -326,6 +326,7 @@ exp3: gpio@20 {
 
 &main_sdhci0 {
 	/* eMMC */
+	status = "okay";
 	non-removable;
 	ti,driver-strength-ohm = <50>;
 	disable-wp;
@@ -333,6 +334,7 @@ &main_sdhci0 {
 
 &main_sdhci1 {
 	/* SD card */
+	status = "okay";
 	pinctrl-0 = <&main_mmc1_pins_default>;
 	pinctrl-names = "default";
 	vmmc-supply = <&vdd_mmc1>;
diff --git a/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi b/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi
index 6eaade5aeb423..5d7542ba41b93 100644
--- a/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi
@@ -654,6 +654,7 @@ main_sdhci0: mmc@...0000 {
 		mmc-hs200-1_8v;
 		mmc-hs400-1_8v;
 		dma-coherent;
+		status = "disabled";
 	};
 
 	main_sdhci1: mmc@...0000 {
@@ -677,6 +678,7 @@ main_sdhci1: mmc@...0000 {
 		ti,clkbuf-sel = <0x7>;
 		ti,trm-icp = <0x8>;
 		dma-coherent;
+		status = "disabled";
 	};
 
 	serdes_wiz0: wiz@...0000 {
-- 
2.39.2