linux-kernel - [PATCH 09/10] arm64: dts: ti: k3-am62: Enable SDHCI nodes at the board level

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Date:   Tue, 18 Oct 2022 16:15:32 -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>,
        Bryan Brattlof <bb@...com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     Andrew Davis <afd@...com>
Subject: [PATCH 09/10] arm64: dts: ti: k3-am62: Enable SDHCI nodes at the board level

SDHCI nodes defined in the top-level AM62x SoC dtsi files are incomplete
and will not be functional unless they are extended with pinmux
information.

As the pinmux is only known 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-am62-main.dtsi | 3 +++
 arch/arm64/boot/dts/ti/k3-am625-sk.dts   | 2 ++
 2 files changed, 5 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
index 43eebff429ab..5a2cd474a761 100644
--- a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
@@ -407,6 +407,7 @@ sdhci0: mmc@...0000 {
 		ti,otap-del-sel-mmc-hs = <0x0>;
 		ti,otap-del-sel-ddr52 = <0x9>;
 		ti,otap-del-sel-hs200 = <0x6>;
+		status = "disabled";
 	};
 
 	sdhci1: mmc@...0000 {
@@ -430,6 +431,7 @@ sdhci1: mmc@...0000 {
 		ti,itap-del-sel-sdr25 = <0x0>;
 		ti,clkbuf-sel = <0x7>;
 		bus-width = <4>;
+		status = "disabled";
 	};
 
 	sdhci2: mmc@...0000 {
@@ -452,6 +454,7 @@ sdhci2: mmc@...0000 {
 		ti,itap-del-sel-sdr12 = <0x0>;
 		ti,itap-del-sel-sdr25 = <0x0>;
 		ti,clkbuf-sel = <0x7>;
+		status = "disabled";
 	};
 
 	fss: bus@...0000 {
diff --git a/arch/arm64/boot/dts/ti/k3-am625-sk.dts b/arch/arm64/boot/dts/ti/k3-am625-sk.dts
index b6d53366ec50..3c98b639b0b2 100644
--- a/arch/arm64/boot/dts/ti/k3-am625-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am625-sk.dts
@@ -335,6 +335,7 @@ exp1: gpio@22 {
 };
 
 &sdhci0 {
+	status = "okay";
 	pinctrl-names = "default";
 	pinctrl-0 = <&main_mmc0_pins_default>;
 	ti,driver-strength-ohm = <50>;
@@ -343,6 +344,7 @@ &sdhci0 {
 
 &sdhci1 {
 	/* SD/MMC */
+	status = "okay";
 	vmmc-supply = <&vdd_mmc1>;
 	vqmmc-supply = <&vdd_sd_dv>;
 	pinctrl-names = "default";
-- 
2.37.3