linux-kernel - [PATCH 2/2] arm64: dts: rockchip: MECSBC: Add FRAM MB85RS128TY

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Message-Id: <20241219-mb85rs128ty-mecsbc-v1-2-77a0e851ef19@pengutronix.de>
Date: Thu, 19 Dec 2024 13:34:57 +0100
From: Jonas Rebmann <jre@...gutronix.de>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Heiko Stuebner <heiko@...ech.de>
Cc: devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 Jonas Rebmann <jre@...gutronix.de>, David Jander <david@...tonic.nl>
Subject: [PATCH 2/2] arm64: dts: rockchip: MECSBC: Add FRAM MB85RS128TY

From: David Jander <david@...tonic.nl>

The board features a Fujitsu MB85RS128TY FRAM chip connected to spi0 CS
0. Add support for the MB85RS128TY to the device tree.

Signed-off-by: David Jander <david@...tonic.nl>
Signed-off-by: Jonas Rebmann <jre@...gutronix.de>
---
 arch/arm64/boot/dts/rockchip/rk3568-mecsbc.dts | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3568-mecsbc.dts b/arch/arm64/boot/dts/rockchip/rk3568-mecsbc.dts
index ca041b4d2d38a4e06cd0a54a806fed2ab723c94d..c70f6df537596a85528e4e0b499e59d71f05b4a3 100644
--- a/arch/arm64/boot/dts/rockchip/rk3568-mecsbc.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3568-mecsbc.dts
@@ -240,6 +240,18 @@ rtc@51 {
 	};
 };
 
+&spi0 {
+	/* use hardware chipselect on cs0 (cs1 unconnected) */
+	pinctrl-0 = <&spi0m0_pins>, <&spi0m0_cs0>;
+	status = "okay";
+
+	fram@0 {
+		compatible = "fujitsu,mb85rs128ty";
+		reg = <0>;
+		spi-max-frequency = <33000000>;
+	};
+};
+
 &i2s1_8ch {
 	pinctrl-names = "default";
 	pinctrl-0 = <&i2s1m0_sclktx &i2s1m0_lrcktx &i2s1m0_sdi0 &i2s1m0_sdo0>;

-- 
2.39.5