linux-kernel - [PATCH v1] arm64: dts: k3-am625-verdin: enable Verdin UART2

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Message-Id: <20231121160436.1032364-1-parth105105@gmail.com>
Date:   Tue, 21 Nov 2023 17:04:36 +0100
From:   Parth Pancholi <parth105105@...il.com>
To:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Cc:     Francesco Dolcini <francesco.dolcini@...adex.com>,
        Marcel Ziswiler <marcel.ziswiler@...adex.com>,
        Parth Pancholi <parth.pancholi@...adex.com>,
        Conor Dooley <conor+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Nishanth Menon <nm@...com>, Rob Herring <robh+dt@...nel.org>,
        Tero Kristo <kristo@...nel.org>,
        Vignesh Raghavendra <vigneshr@...com>
Subject: [PATCH v1] arm64: dts: k3-am625-verdin: enable Verdin UART2

From: Parth Pancholi <parth.pancholi@...adex.com>

Enable UART2 for AM62 based SOM's Verdin carrier boards Dahlia,
Development and Yavia.
Earlier Verdin UART2 was reserved by R5 DM firmware which can be now
configured using boardcfg during U-boot compilation in the latest TI
SDKs. In a default config, no one writes to this UART.

Signed-off-by: Parth Pancholi <parth.pancholi@...adex.com>

---

 arch/arm64/boot/dts/ti/k3-am62-verdin-dahlia.dtsi | 3 +--
 arch/arm64/boot/dts/ti/k3-am62-verdin-dev.dtsi    | 3 +--
 arch/arm64/boot/dts/ti/k3-am62-verdin-yavia.dtsi  | 3 +--
 3 files changed, 3 insertions(+), 6 deletions(-)

diff --git a/arch/arm64/boot/dts/ti/k3-am62-verdin-dahlia.dtsi b/arch/arm64/boot/dts/ti/k3-am62-verdin-dahlia.dtsi
index 013357d17d48..bf6d27e70bc4 100644
--- a/arch/arm64/boot/dts/ti/k3-am62-verdin-dahlia.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62-verdin-dahlia.dtsi
@@ -214,6 +214,5 @@ &verdin_gpio_keys {
 
 /* Verdin UART_2 */
 &wkup_uart0 {
-	/* FIXME: WKUP UART0 is used by DM firmware */
-	status = "reserved";
+	status = "okay";
 };
diff --git a/arch/arm64/boot/dts/ti/k3-am62-verdin-dev.dtsi b/arch/arm64/boot/dts/ti/k3-am62-verdin-dev.dtsi
index 6701cb8974bb..680071688dcb 100644
--- a/arch/arm64/boot/dts/ti/k3-am62-verdin-dev.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62-verdin-dev.dtsi
@@ -235,6 +235,5 @@ &verdin_gpio_keys {
 
 /* Verdin UART_2 */
 &wkup_uart0 {
-	/* FIXME: WKUP UART0 is used by DM firmware */
-	status = "reserved";
+	status = "okay";
 };
diff --git a/arch/arm64/boot/dts/ti/k3-am62-verdin-yavia.dtsi b/arch/arm64/boot/dts/ti/k3-am62-verdin-yavia.dtsi
index c685df7deaee..997dfafd27eb 100644
--- a/arch/arm64/boot/dts/ti/k3-am62-verdin-yavia.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62-verdin-yavia.dtsi
@@ -207,6 +207,5 @@ &verdin_gpio_keys {
 
 /* Verdin UART_2 */
 &wkup_uart0 {
-	/* FIXME: WKUP UART0 is used by DM firmware */
-	status = "reserved";
+	status = "okay";
 };
-- 
2.34.1