linux-kernel - [PATCH V2 2/3] arm64: dts: ti: k3-am62p: Add gpio-ranges properties

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Date: Thu, 27 Jun 2024 11:25:38 -0500
From: Nishanth Menon <nm@...com>
To: Conor Dooley <conor+dt@...nel.org>,
        Krzysztof Kozlowski
	<krzk+dt@...nel.org>,
        Rob Herring <robh@...nel.org>, Vignesh Raghavendra
	<vigneshr@...com>
CC: <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        Tero Kristo <kristo@...nel.org>, Vaishnav Achath <vaishnav.a@...com>,
        Jared McArthur <j-mcarthur@...com>, Bryan Brattlof <bb@...com>,
        Dhruva Gole <d-gole@...com>, Nishanth Menon
	<nm@...com>
Subject: [PATCH V2 2/3] arm64: dts: ti: k3-am62p: Add gpio-ranges properties

On the AM62P platform we have no single 1:1 relation regarding index
of GPIO and pin controller. The GPIOs and pin controller registers
have mapping and holes in the map. These have been extracted from the
AM62P data sheet.

MCU pinctrl definition is shared as it is common between AM62P and
J722S, but that is not the case for main domain.

Ref: AM62P Data sheet https://www.ti.com/lit/gpn/am62p

Signed-off-by: Nishanth Menon <nm@...com>
---
Changes since V1:
 - Use PIN_GPIO_RANGE_IOPAD instead of PIN_GPIO_MUX_MODE
 - Refactored on top of next-20240626 (new common files)
 - Since the patch had to be refactored as well as new define used, I
   have skipped picking up Dhruva's Reviewed-by.

V1: https://lore.kernel.org/linux-arm-kernel/20240618173123.2592074-3-nm@ti.com/

 .../boot/dts/ti/k3-am62p-j722s-common-mcu.dtsi  |  8 ++++++++
 arch/arm64/boot/dts/ti/k3-am62p-main.dtsi       | 17 +++++++++++++++++
 2 files changed, 25 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am62p-j722s-common-mcu.dtsi b/arch/arm64/boot/dts/ti/k3-am62p-j722s-common-mcu.dtsi
index 1d4e5fc8b4e0..e65db6ce02bf 100644
--- a/arch/arm64/boot/dts/ti/k3-am62p-j722s-common-mcu.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62p-j722s-common-mcu.dtsi
@@ -12,7 +12,15 @@ mcu_pmx0: pinctrl@...4000 {
 		#pinctrl-cells = <1>;
 		pinctrl-single,register-width = <32>;
 		pinctrl-single,function-mask = <0xffffffff>;
+		pinctrl-single,gpio-range =
+			<&mcu_pmx_range 0 21 PIN_GPIO_RANGE_IOPAD>,
+			<&mcu_pmx_range 23 1 PIN_GPIO_RANGE_IOPAD>,
+			<&mcu_pmx_range 32 2 PIN_GPIO_RANGE_IOPAD>;
 		bootph-all;
+
+		mcu_pmx_range: gpio-range {
+			#pinctrl-single,gpio-range-cells = <3>;
+		};
 	};
 
 	mcu_esm: esm@...0000 {
diff --git a/arch/arm64/boot/dts/ti/k3-am62p-main.dtsi b/arch/arm64/boot/dts/ti/k3-am62p-main.dtsi
index f8a7f0cbd327..57383bd2eaeb 100644
--- a/arch/arm64/boot/dts/ti/k3-am62p-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62p-main.dtsi
@@ -42,10 +42,27 @@ &inta_main_dmss {
 	ti,interrupt-ranges = <5 69 35>;
 };
 
+&main_pmx0 {
+	pinctrl-single,gpio-range =
+		<&main_pmx0_range 0 32 PIN_GPIO_RANGE_IOPAD>,
+		<&main_pmx0_range 33 92 PIN_GPIO_RANGE_IOPAD>,
+		<&main_pmx0_range 137 5 PIN_GPIO_RANGE_IOPAD>,
+		<&main_pmx0_range 143 3 PIN_GPIO_RANGE_IOPAD>,
+		<&main_pmx0_range 149 2 PIN_GPIO_RANGE_IOPAD>;
+
+	main_pmx0_range: gpio-range {
+		#pinctrl-single,gpio-range-cells = <3>;
+	};
+};
+
 &main_gpio0 {
+	gpio-ranges = <&main_pmx0 0 0 32>, <&main_pmx0 32 33 38>,
+			<&main_pmx0 70 72 22>;
 	ti,ngpio = <92>;
 };
 
 &main_gpio1 {
+	gpio-ranges = <&main_pmx0 0 94 32>, <&main_pmx0 42 137 5>,
+			<&main_pmx0 47 143 3>, <&main_pmx0 50 149 2>;
 	ti,ngpio = <52>;
 };
-- 
2.43.0