* [PATCH] arm64: dts: imx8mm-venice-gw7904: enable UART1 hardware flow control
@ 2023-06-06 15:38 Tim Harvey
2023-07-17 0:15 ` Shawn Guo
0 siblings, 1 reply; 2+ messages in thread
From: Tim Harvey @ 2023-06-06 15:38 UTC (permalink / raw)
To: linux-arm-kernel
Cc: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Shawn Guo,
Sascha Hauer, Pengutronix Kernel Team, Fabio Estevam,
NXP Linux Team, devicetree, linux-kernel, Tim Harvey
On the GW7904 uart1 can use UART3_TX/RX for hardware flow control
which was the desired default configuration. Remove uart3 and configure
uart1 for hardware flow control.
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
---
.../dts/freescale/imx8mm-venice-gw7904.dts | 18 ++++--------------
1 file changed, 4 insertions(+), 14 deletions(-)
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw7904.dts b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw7904.dts
index 93088fa1c3b9..c12e3f4f800f 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw7904.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw7904.dts
@@ -636,6 +636,8 @@ &pgc_mipi {
&uart1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_uart1>;
+ cts-gpios = <&gpio5 26 GPIO_ACTIVE_LOW>;
+ rts-gpios = <&gpio5 27 GPIO_ACTIVE_LOW>;
status = "okay";
};
@@ -646,13 +648,6 @@ &uart2 {
status = "okay";
};
-/* off-board RS232 */
-&uart3 {
- pinctrl-names = "default";
- pinctrl-0 = <&pinctrl_uart3>;
- status = "okay";
-};
-
&usbotg1 {
dr_mode = "host";
disable-over-current;
@@ -814,6 +809,8 @@ pinctrl_uart1: uart1grp {
fsl,pins = <
MX8MM_IOMUXC_UART1_RXD_UART1_DCE_RX 0x140
MX8MM_IOMUXC_UART1_TXD_UART1_DCE_TX 0x140
+ MX8MM_IOMUXC_UART3_RXD_GPIO5_IO26 0x140 /* CTS# in */
+ MX8MM_IOMUXC_UART3_TXD_GPIO5_IO27 0x140 /* RTS# out */
>;
};
@@ -824,13 +821,6 @@ MX8MM_IOMUXC_UART2_TXD_UART2_DCE_TX 0x140
>;
};
- pinctrl_uart3: uart3grp {
- fsl,pins = <
- MX8MM_IOMUXC_UART3_RXD_UART3_DCE_RX 0x140
- MX8MM_IOMUXC_UART3_TXD_UART3_DCE_TX 0x140
- >;
- };
-
pinctrl_usdhc2: usdhc2grp {
fsl,pins = <
MX8MM_IOMUXC_SD2_CLK_USDHC2_CLK 0x190
--
2.25.1
^ permalink raw reply related [flat|nested] 2+ messages in thread* Re: [PATCH] arm64: dts: imx8mm-venice-gw7904: enable UART1 hardware flow control
2023-06-06 15:38 [PATCH] arm64: dts: imx8mm-venice-gw7904: enable UART1 hardware flow control Tim Harvey
@ 2023-07-17 0:15 ` Shawn Guo
0 siblings, 0 replies; 2+ messages in thread
From: Shawn Guo @ 2023-07-17 0:15 UTC (permalink / raw)
To: Tim Harvey
Cc: linux-arm-kernel, Rob Herring, Krzysztof Kozlowski, Conor Dooley,
Sascha Hauer, Pengutronix Kernel Team, Fabio Estevam,
NXP Linux Team, devicetree, linux-kernel
On Tue, Jun 06, 2023 at 08:38:19AM -0700, Tim Harvey wrote:
> On the GW7904 uart1 can use UART3_TX/RX for hardware flow control
> which was the desired default configuration. Remove uart3 and configure
> uart1 for hardware flow control.
>
> Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Applied, thanks!
^ permalink raw reply [flat|nested] 2+ messages in thread
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