linux-kernel - [PATCH] arm64: dts: imx8mp: drop dmas property for uart console

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Date:   Wed, 22 Jun 2022 14:20:27 +0800
From:   "Peng Fan (OSS)" <peng.fan@....nxp.com>
To:     robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        shawnguo@...nel.org, s.hauer@...gutronix.de
Cc:     festevam@...il.com, linux-imx@....com, hvilleneuve@...onoff.com,
        l.stach@...gutronix.de, abbaraju.manojsai@...rulasolutions.com,
        jagan@...rulasolutions.com, matteo.lisi@...icam.com,
        tharvey@...eworks.com, t.remmet@...tec.de,
        u.kleine-koenig@...gutronix.de, t.remmet@...tec.deh,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, Peng Fan <peng.fan@....com>
Subject: [PATCH] arm64: dts: imx8mp: drop dmas property for uart console

From: Peng Fan <peng.fan@....com>

Commit 71066545b48e4("driver core: Set fw_devlink.strict=1 by default")
default set fw_devlink to true. This has a side effect to i.MX uart
console. The sdma will make the i.MX8MP uart driver defer probe for some
time (~10s with i.MX8MP-EVK board) until sdma ready, because sdma is a
supplier with property dmas set in device tree node.

Since this uart is for console, we need log printed out as soon as
possible, so remove the dmas property for the uart console node.

Signed-off-by: Peng Fan <peng.fan@....com>
---

V1:
 The upper set fw_devlink.strict=1 patch is in linux-next tree.

 arch/arm64/boot/dts/freescale/imx8mp-evk.dts                  | 2 ++
 arch/arm64/boot/dts/freescale/imx8mp-icore-mx8mp-edimm2.2.dts | 2 ++
 arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-rdk.dts  | 2 ++
 arch/arm64/boot/dts/freescale/imx8mp-venice-gw74xx.dts        | 2 ++
 4 files changed, 8 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
index fb11c03bc8b1..3fdb38bc0069 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
@@ -359,6 +359,8 @@ &uart2 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_uart2>;
 	status = "okay";
+	/delete-property/ dmas;
+	/delete-property/ dma-names;
 };
 
 &usb3_phy1 {
diff --git a/arch/arm64/boot/dts/freescale/imx8mp-icore-mx8mp-edimm2.2.dts b/arch/arm64/boot/dts/freescale/imx8mp-icore-mx8mp-edimm2.2.dts
index dd703b6a5e17..fb2b44e94482 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-icore-mx8mp-edimm2.2.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mp-icore-mx8mp-edimm2.2.dts
@@ -69,6 +69,8 @@ &uart2 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_uart2>;
 	status = "okay";
+	/delete-property/ dmas;
+	/delete-property/ dma-names;
 };
 
 &usb3_phy0 {
diff --git a/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-rdk.dts b/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-rdk.dts
index 6aa720bafe28..68a478151292 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-rdk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-rdk.dts
@@ -99,6 +99,8 @@ &uart1 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_uart1>;
 	status = "okay";
+	/delete-property/ dmas;
+	/delete-property/ dma-names;
 };
 
 /* SD-Card */
diff --git a/arch/arm64/boot/dts/freescale/imx8mp-venice-gw74xx.dts b/arch/arm64/boot/dts/freescale/imx8mp-venice-gw74xx.dts
index 521215520a0f..f90c1ac2791c 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-venice-gw74xx.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mp-venice-gw74xx.dts
@@ -554,6 +554,8 @@ &uart2 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_uart2>;
 	status = "okay";
+	/delete-property/ dmas;
+	/delete-property/ dma-names;
 };
 
 &uart4 {
-- 
2.25.1