ARM: dts: imx53: Update UART configuration on M53Menlo

Enable flow control lines on UART1 and UART2, add matching pinmux entries.
Add and enable UART3 with RS485 mode enabled on boot.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: NXP Linux Team <linux-imx@nxp.com>
To: linux-arm-kernel@lists.infradead.org
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm/boot/dts/imx53-m53menlo.dts b/arch/arm/boot/dts/imx53-m53menlo.dts
index f0a3fde..62bc6a9 100644 (file)
--- a/arch/arm/boot/dts/imx53-m53menlo.dts
+++ b/arch/arm/boot/dts/imx53-m53menlo.dts
@@ -244,6 +244,8 @@
                        fsl,pins = <
                                MX53_PAD_PATA_DIOW__UART1_TXD_MUX       0x1e4
                                MX53_PAD_PATA_DMACK__UART1_RXD_MUX      0x1e4
+                               MX53_PAD_PATA_IORDY__UART1_RTS          0x1e4
+                               MX53_PAD_PATA_RESET_B__UART1_CTS        0x1e4
                        >;
                };
 
@@ -251,6 +253,16 @@
                        fsl,pins = <
                                MX53_PAD_PATA_BUFFER_EN__UART2_RXD_MUX  0x1e4
                                MX53_PAD_PATA_DMARQ__UART2_TXD_MUX      0x1e4
+                               MX53_PAD_PATA_DIOR__UART2_RTS           0x1e4
+                               MX53_PAD_PATA_INTRQ__UART2_CTS          0x1e4
+                       >;
+               };
+
+               pinctrl_uart3: uart3grp {
+                       fsl,pins = <
+                               MX53_PAD_PATA_CS_1__UART3_RXD_MUX       0x1e4
+                               MX53_PAD_PATA_CS_0__UART3_TXD_MUX       0x1e4
+                               MX53_PAD_PATA_DA_2__UART3_RTS           0x1e4
                        >;
                };
 
@@ -287,12 +299,21 @@
 &uart1 {
        pinctrl-names = "default";
        pinctrl-0 = <&pinctrl_uart1>;
+       uart-has-rtscts;
        status = "okay";
 };
 
 &uart2 {
        pinctrl-names = "default";
        pinctrl-0 = <&pinctrl_uart2>;
+       uart-has-rtscts;
+       status = "okay";
+};
+
+&uart3 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&pinctrl_uart3>;
+       linux,rs485-enabled-at-boot-time;
        status = "okay";
 };