linux-kernel - [PATCH 03/10] arm64: dts: ti: k3-am64: Enable SPI nodes at the board level

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Date:   Mon, 17 Oct 2022 14:25:25 -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>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     Andrew Davis <afd@...com>
Subject: [PATCH 03/10] arm64: dts: ti: k3-am64: Enable SPI nodes at the board level

SPI nodes defined in the top-level AM64x 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 SPI 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-am64-main.dtsi | 5 +++++
 arch/arm64/boot/dts/ti/k3-am64-mcu.dtsi  | 2 ++
 arch/arm64/boot/dts/ti/k3-am642-evm.dts  | 9 +--------
 arch/arm64/boot/dts/ti/k3-am642-sk.dts   | 8 --------
 4 files changed, 8 insertions(+), 16 deletions(-)

diff --git a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
index fdcacf78f4a6..375078ca4fdd 100644
--- a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
@@ -370,6 +370,7 @@ main_spi0: spi@...00000 {
 		clocks = <&k3_clks 141 0>;
 		dmas = <&main_pktdma 0xc300 0>, <&main_pktdma 0x4300 0>;
 		dma-names = "tx0", "rx0";
+		status = "disabled";
 	};
 
 	main_spi1: spi@...10000 {
@@ -380,6 +381,7 @@ main_spi1: spi@...10000 {
 		#size-cells = <0>;
 		power-domains = <&k3_pds 142 TI_SCI_PD_EXCLUSIVE>;
 		clocks = <&k3_clks 142 0>;
+		status = "disabled";
 	};
 
 	main_spi2: spi@...20000 {
@@ -390,6 +392,7 @@ main_spi2: spi@...20000 {
 		#size-cells = <0>;
 		power-domains = <&k3_pds 143 TI_SCI_PD_EXCLUSIVE>;
 		clocks = <&k3_clks 143 0>;
+		status = "disabled";
 	};
 
 	main_spi3: spi@...30000 {
@@ -400,6 +403,7 @@ main_spi3: spi@...30000 {
 		#size-cells = <0>;
 		power-domains = <&k3_pds 144 TI_SCI_PD_EXCLUSIVE>;
 		clocks = <&k3_clks 144 0>;
+		status = "disabled";
 	};
 
 	main_spi4: spi@...40000 {
@@ -410,6 +414,7 @@ main_spi4: spi@...40000 {
 		#size-cells = <0>;
 		power-domains = <&k3_pds 145 TI_SCI_PD_EXCLUSIVE>;
 		clocks = <&k3_clks 145 0>;
+		status = "disabled";
 	};
 
 	main_gpio_intr: interrupt-controller@...000 {
diff --git a/arch/arm64/boot/dts/ti/k3-am64-mcu.dtsi b/arch/arm64/boot/dts/ti/k3-am64-mcu.dtsi
index 5ce8ceb3779d..38ddf0b3b8a0 100644
--- a/arch/arm64/boot/dts/ti/k3-am64-mcu.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am64-mcu.dtsi
@@ -60,6 +60,7 @@ mcu_spi0: spi@...0000 {
 		#size-cells = <0>;
 		power-domains = <&k3_pds 147 TI_SCI_PD_EXCLUSIVE>;
 		clocks = <&k3_clks 147 0>;
+		status = "disabled";
 	};
 
 	mcu_spi1: spi@...0000 {
@@ -70,6 +71,7 @@ mcu_spi1: spi@...0000 {
 		#size-cells = <0>;
 		power-domains = <&k3_pds 148 TI_SCI_PD_EXCLUSIVE>;
 		clocks = <&k3_clks 148 0>;
+		status = "disabled";
 	};
 
 	mcu_gpio_intr: interrupt-controller@...0000 {
diff --git a/arch/arm64/boot/dts/ti/k3-am642-evm.dts b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
index 3903e907244e..12d971c3bc3a 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
@@ -379,15 +379,8 @@ &mcu_gpio0 {
 	status = "reserved";
 };
 
-&mcu_spi0 {
-	status = "disabled";
-};
-
-&mcu_spi1 {
-	status = "disabled";
-};
-
 &main_spi0 {
+	status = "okay";
 	pinctrl-names = "default";
 	pinctrl-0 = <&main_spi0_pins_default>;
 	ti,pindir-d0-out-d1-in;
diff --git a/arch/arm64/boot/dts/ti/k3-am642-sk.dts b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
index 56763d839e05..1a116593a771 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
@@ -375,14 +375,6 @@ exp2: gpio@60 {
 	};
 };
 
-&mcu_spi0 {
-	status = "disabled";
-};
-
-&mcu_spi1 {
-	status = "disabled";
-};
-
 /* mcu_gpio0 is reserved for mcu firmware usage */
 &mcu_gpio0 {
 	status = "reserved";
-- 
2.37.3