arm64: dts: ti: k3-am62: Enable UART nodes at the board level

UART nodes defined in the top-level AM62x SoC dtsi files are incomplete
and will not be functional unless they are extended with pinmux
information.

As the pinmux is only known at the board integration level, these
nodes should only be enabled when provided with this information.

Disable the UART nodes in the dtsi files and only enable the ones that
are actually pinned out on a given board.

Signed-off-by: Andrew Davis <afd@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Bryan Brattlof <bb@ti.com>
Link: https://lore.kernel.org/r/20221018211533.21335-2-afd@ti.com

diff --git a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
index 03660476364f37623927dbcf33a3bee25425f82d..f6f8ccdb5f55f3026899b072e01e7f98420b54d9 100644 (file)
--- a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
@@ -199,6 +199,7 @@
                power-domains = <&k3_pds 146 TI_SCI_PD_EXCLUSIVE>;
                clocks = <&k3_clks 146 0>;
                clock-names = "fclk";
+               status = "disabled";
        };
 
        main_uart1: serial@2810000 {
@@ -208,6 +209,7 @@
                power-domains = <&k3_pds 152 TI_SCI_PD_EXCLUSIVE>;
                clocks = <&k3_clks 152 0>;
                clock-names = "fclk";
+               status = "disabled";
        };
 
        main_uart2: serial@2820000 {
@@ -217,6 +219,7 @@
                power-domains = <&k3_pds 153 TI_SCI_PD_EXCLUSIVE>;
                clocks = <&k3_clks 153 0>;
                clock-names = "fclk";
+               status = "disabled";
        };
 
        main_uart3: serial@2830000 {
@@ -226,6 +229,7 @@
                power-domains = <&k3_pds 154 TI_SCI_PD_EXCLUSIVE>;
                clocks = <&k3_clks 154 0>;
                clock-names = "fclk";
+               status = "disabled";
        };
 
        main_uart4: serial@2840000 {
@@ -235,6 +239,7 @@
                power-domains = <&k3_pds 155 TI_SCI_PD_EXCLUSIVE>;
                clocks = <&k3_clks 155 0>;
                clock-names = "fclk";
+               status = "disabled";
        };
 
        main_uart5: serial@2850000 {
@@ -244,6 +249,7 @@
                power-domains = <&k3_pds 156 TI_SCI_PD_EXCLUSIVE>;
                clocks = <&k3_clks 156 0>;
                clock-names = "fclk";
+               status = "disabled";
        };
 
        main_uart6: serial@2860000 {
@@ -253,6 +259,7 @@
                power-domains = <&k3_pds 158 TI_SCI_PD_EXCLUSIVE>;
                clocks = <&k3_clks 158 0>;
                clock-names = "fclk";
+               status = "disabled";
        };
 
        main_i2c0: i2c@20000000 {

diff --git a/arch/arm64/boot/dts/ti/k3-am62-mcu.dtsi b/arch/arm64/boot/dts/ti/k3-am62-mcu.dtsi
index f56c803560f26c203d96475e928189707293a5ef..8dff39723628df5b6db805a4ed137d0384591970 100644 (file)
--- a/arch/arm64/boot/dts/ti/k3-am62-mcu.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62-mcu.dtsi
@@ -21,6 +21,7 @@
                power-domains = <&k3_pds 149 TI_SCI_PD_EXCLUSIVE>;
                clocks = <&k3_clks 149 0>;
                clock-names = "fclk";
+               status = "disabled";
        };
 
        mcu_i2c0: i2c@4900000 {

diff --git a/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi b/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi
index 4090134676cf679af44856f55343c01f352d2827..94cfc549f644526ed37056d93d801543a83d21bf 100644 (file)
--- a/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi
@@ -26,6 +26,7 @@
                power-domains = <&k3_pds 114 TI_SCI_PD_EXCLUSIVE>;
                clocks = <&k3_clks 114 0>;
                clock-names = "fclk";
+               status = "disabled";
        };
 
        wkup_i2c0: i2c@2b200000 {

diff --git a/arch/arm64/boot/dts/ti/k3-am625-sk.dts b/arch/arm64/boot/dts/ti/k3-am625-sk.dts
index 93a5f0817efc4539825c00152229460c893cee85..0c7b25213e977a436cd53966701c7c2ceaf11756 100644 (file)
--- a/arch/arm64/boot/dts/ti/k3-am625-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am625-sk.dts
@@ -282,11 +282,8 @@
        status = "reserved";
 };
 
-&mcu_uart0 {
-       status = "disabled";
-};
-
 &main_uart0 {
+       status = "okay";
        pinctrl-names = "default";
        pinctrl-0 = <&main_uart0_pins_default>;
 };
@@ -296,26 +293,6 @@
        status = "reserved";
 };
 
-&main_uart2 {
-       status = "disabled";
-};
-
-&main_uart3 {
-       status = "disabled";
-};
-
-&main_uart4 {
-       status = "disabled";
-};
-
-&main_uart5 {
-       status = "disabled";
-};
-
-&main_uart6 {
-       status = "disabled";
-};
-
 &mcu_i2c0 {
        status = "disabled";
 };