linux-kernel - [PATCH 11/12] ARM: dts: mmp3-dell-ariel: Replace SSP2 with spi-gpio

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Date:   Thu, 21 Jan 2021 04:41:29 +0100
From:   Lubomir Rintel <lkundrak@...sk>
To:     Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>
Cc:     Rob Herring <robh+dt@...nel.org>, SoC Team <soc@...nel.org>,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Lubomir Rintel <lkundrak@...sk>
Subject: [PATCH 11/12] ARM: dts: mmp3-dell-ariel: Replace SSP2 with spi-gpio

The firmware leaves the pins in GPIO mode. Until we have a proper pinmux
driver hooked on we just need to bitbang SPI. No big deal, this is just
used for the power button and performance is not important.

Signed-off-by: Lubomir Rintel <lkundrak@...sk>
---
 arch/arm/boot/dts/mmp3-dell-ariel.dts | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/mmp3-dell-ariel.dts b/arch/arm/boot/dts/mmp3-dell-ariel.dts
index c4a6bd876d849..fe6df364a9eb6 100644
--- a/arch/arm/boot/dts/mmp3-dell-ariel.dts
+++ b/arch/arm/boot/dts/mmp3-dell-ariel.dts
@@ -30,6 +30,17 @@ memory@0 {
 		reg = <0x0 0x80000000>;
 		device_type = "memory";
 	};
+
+	ec_input_spi: spi {
+		compatible = "spi-gpio";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		num-chipselects = <0>;
+		sck-gpios = <&gpio 55 GPIO_ACTIVE_HIGH>;
+		miso-gpios = <&gpio 57 GPIO_ACTIVE_HIGH>;
+		mosi-gpios = <&gpio 58 GPIO_ACTIVE_HIGH>;
+	};
 };
 
 &uart3 {
@@ -118,7 +129,7 @@ firmware-flash@0 {
 	};
 };
 
-&ssp2 {
+&ec_input_spi {
 	status = "okay";
 	cs-gpios = <&gpio 56 GPIO_ACTIVE_LOW>;
 
-- 
2.29.2