From: Aswath Govindraju <a-govindraju@ti.com>
Cc: Vignesh Raghavendra <vigneshr@ti.com>,
Lokesh Vutla <lokeshvutla@ti.com>,
Grygorii Strashko <grygorii.strashko@ti.com>,
Aswath Govindraju <a-govindraju@ti.com>,
Nishanth Menon <nm@ti.com>, Tero Kristo <kristo@kernel.org>,
Rob Herring <robh+dt@kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: [PATCH v3 2/2] arm64: dts: ti: k3-am642: reserve gpio in mcu domain for firmware usage
Date: Fri, 19 Mar 2021 10:49:50 +0530 [thread overview]
Message-ID: <20210319051950.17549-3-a-govindraju@ti.com> (raw)
In-Reply-To: <20210319051950.17549-1-a-govindraju@ti.com>
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@ti.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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next prev parent reply other threads:[~2021-03-19 5:22 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-19 5:19 [PATCH v3 0/2] AM64: Add support for GPIO Aswath Govindraju
2021-03-19 5:19 ` [PATCH v3 1/2] arm64: dts: ti: k3-am64: Add GPIO DT nodes Aswath Govindraju
2021-03-19 6:25 ` Lokesh Vutla
2021-03-19 5:19 ` Aswath Govindraju [this message]
2021-03-19 6:25 ` [PATCH v3 2/2] arm64: dts: ti: k3-am642: reserve gpio in mcu domain for firmware usage Lokesh Vutla
2021-03-22 15:42 ` [PATCH v3 0/2] AM64: Add support for GPIO Nishanth Menon
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