linux-kernel - [PATCH] ARM: dts: mvebu: Add PWM properties for armada-38x

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Date:   Thu,  1 Jun 2017 22:10:30 +0200
From:   Ralph Sennhauser <ralph.sennhauser@...il.com>
To:     linux-arm-kernel@...ts.infradead.org
Cc:     Gregory Clement <gregory.clement@...e-electrons.com>,
        Jason Cooper <jason@...edaemon.net>,
        Andrew Lunn <andrew@...n.ch>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Russell King <linux@...linux.org.uk>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Richard Genoud <richard.genoud@...il.com>,
        Ralph Sennhauser <ralph.sennhauser@...il.com>
Subject: [PATCH] ARM: dts: mvebu: Add PWM properties for armada-38x

Add the required properties to the GPIO nodes for them to be used as PWM
lines.

Signed-off-by: Ralph Sennhauser <ralph.sennhauser@...il.com>

---

Hi everyone,

this patch uses "marvell,armada-370-gpio" for the compatible property
and as such depends on the rename of the property to still make it in in
time for 4.12 ("gpio: mvebu: change compatible string for PWM support").
Otherwise the compatible string will need to be amended to
"marvell,armada-370-xp-gpio".

Checked the functional spec and the register ranges and offsets are the
same as for armada-xp. Likely the same holds true for the armada-39x
family, though I neither have access to the spec nor any such hardware.

Ralph
---
 arch/arm/boot/dts/armada-38x.dtsi | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/arch/arm/boot/dts/armada-38x.dtsi b/arch/arm/boot/dts/armada-38x.dtsi
index 8b165c3..af31f5d 100644
--- a/arch/arm/boot/dts/armada-38x.dtsi
+++ b/arch/arm/boot/dts/armada-38x.dtsi
@@ -312,31 +312,39 @@
 			};
 
 			gpio0: gpio@...00 {
-				compatible = "marvell,orion-gpio";
-				reg = <0x18100 0x40>;
+				compatible = "marvell,armada-370-gpio",
+					     "marvell,orion-gpio";
+				reg = <0x18100 0x40>, <0x181c0 0x08>;
+				reg-names = "gpio", "pwm";
 				ngpios = <32>;
 				gpio-controller;
 				#gpio-cells = <2>;
+				#pwm-cells = <2>;
 				interrupt-controller;
 				#interrupt-cells = <2>;
 				interrupts = <GIC_SPI 53 IRQ_TYPE_LEVEL_HIGH>,
 					     <GIC_SPI 54 IRQ_TYPE_LEVEL_HIGH>,
 					     <GIC_SPI 55 IRQ_TYPE_LEVEL_HIGH>,
 					     <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&coreclk 0>;
 			};
 
 			gpio1: gpio@...40 {
-				compatible = "marvell,orion-gpio";
-				reg = <0x18140 0x40>;
+				compatible = "marvell,armada-370-gpio",
+					     "marvell,orion-gpio";
+				reg = <0x18140 0x40>, <0x181c8 0x08>;
+				reg-names = "gpio", "pwm";
 				ngpios = <28>;
 				gpio-controller;
 				#gpio-cells = <2>;
+				#pwm-cells = <2>;
 				interrupt-controller;
 				#interrupt-cells = <2>;
 				interrupts = <GIC_SPI 58 IRQ_TYPE_LEVEL_HIGH>,
 					     <GIC_SPI 59 IRQ_TYPE_LEVEL_HIGH>,
 					     <GIC_SPI 60 IRQ_TYPE_LEVEL_HIGH>,
 					     <GIC_SPI 61 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&coreclk 0>;
 			};
 
 			systemc: system-controller@...00 {
-- 
2.10.2