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Message-ID: <20210319051950.17549-3-a-govindraju@ti.com>
Date: Fri, 19 Mar 2021 10:49:50 +0530
From: Aswath Govindraju <a-govindraju@...com>
To: unlisted-recipients:; (no To-header on input)
CC: Vignesh Raghavendra <vigneshr@...com>,
Lokesh Vutla <lokeshvutla@...com>,
Grygorii Strashko <grygorii.strashko@...com>,
Aswath Govindraju <a-govindraju@...com>,
Nishanth Menon <nm@...com>, Tero Kristo <kristo@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v3 2/2] arm64: dts: ti: k3-am642: reserve gpio in mcu domain for firmware usage
The gpio0 subsystem present in MCU domain might be used by firmware and is
not pinned out in evm/sk. Therefore, reserve it for MCU firmware.
Signed-off-by: Aswath Govindraju <a-govindraju@...com>
---
arch/arm64/boot/dts/ti/k3-am642-evm.dts | 5 +++++
arch/arm64/boot/dts/ti/k3-am642-sk.dts | 5 +++++
2 files changed, 10 insertions(+)
diff --git a/arch/arm64/boot/dts/ti/k3-am642-evm.dts b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
index 9522f104d979..385d99a3bc4f 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
@@ -310,6 +310,11 @@
};
};
+/* mcu_gpio0 is reserved for mcu firmware usage */
+&mcu_gpio0 {
+ status = "reserved";
+};
+
&mcu_i2c0 {
status = "disabled";
};
diff --git a/arch/arm64/boot/dts/ti/k3-am642-sk.dts b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
index 3a5bee4b0b0c..282fb4185db9 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
@@ -220,6 +220,11 @@
status = "disabled";
};
+/* mcu_gpio0 is reserved for mcu firmware usage */
+&mcu_gpio0 {
+ status = "reserved";
+};
+
&sdhci1 {
/* SD/MMC */
vmmc-supply = <&vdd_mmc1>;
--
2.17.1
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