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authorLinus Walleij <linus.walleij@linaro.org>2015-07-23 23:14:20 +0200
committerOlof Johansson <olof@lixom.net>2015-08-11 15:29:58 +0200
commit1cb3375bb53719a2d90793b5bc47f99c21dc6b72 (patch)
tree5767be93f28fecc478eba77a6fdd8270dab722b3
parent4cec8cd790e3645d2e5ddf01cbe4ed2a90dcd94f (diff)
ARM: nomadik: selectively enable UART0 on boards
The S8815 board is using RX/TX on UART0, and the NHK8815 is using RX/TX and CTS/RTS (the latter connected to a Bluetooth chip). Activate the right groups with the u0 UART0 function on each board and undisable it. Get rid of the old erroneous default definition from the SoC file. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Olof Johansson <olof@lixom.net>
-rw-r--r--arch/arm/boot/dts/ste-nomadik-nhk15.dts16
-rw-r--r--arch/arm/boot/dts/ste-nomadik-s8815.dts18
-rw-r--r--arch/arm/boot/dts/ste-nomadik-stn8815.dtsi10
3 files changed, 33 insertions, 11 deletions
diff --git a/arch/arm/boot/dts/ste-nomadik-nhk15.dts b/arch/arm/boot/dts/ste-nomadik-nhk15.dts
index 0e167ed2857b..9d888b0e75af 100644
--- a/arch/arm/boot/dts/ste-nomadik-nhk15.dts
+++ b/arch/arm/boot/dts/ste-nomadik-nhk15.dts
@@ -17,12 +17,22 @@
};
aliases {
+ serial0 = &uart0;
serial1 = &uart1;
stmpe-i2c0 = &stmpe0;
stmpe-i2c1 = &stmpe1;
};
pinctrl {
+ uart0 {
+ uart0_nhk_mode: uart0_mux {
+ u0_default_mux {
+ function = "u0";
+ groups = "u0txrx_a_1", "u0ctsrts_a_1";
+ };
+ };
+ };
+
stmpe2401_1 {
stmpe2401_1_nhk_mode: stmpe2401_1_nhk {
nhk_cfg1 {
@@ -146,6 +156,12 @@
};
amba {
+ /* Activate RX/TX and CTS/RTS on UART 0 */
+ uart0: uart@101fd000 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart0_nhk_mode>;
+ status = "okay";
+ };
mmcsd: sdi@101f6000 {
cd-gpios = <&stmpe_gpio44 7 GPIO_ACTIVE_LOW>;
wp-gpios = <&stmpe_gpio44 18 GPIO_ACTIVE_HIGH>;
diff --git a/arch/arm/boot/dts/ste-nomadik-s8815.dts b/arch/arm/boot/dts/ste-nomadik-s8815.dts
index edcfe2413ee7..11b5e34150b8 100644
--- a/arch/arm/boot/dts/ste-nomadik-s8815.dts
+++ b/arch/arm/boot/dts/ste-nomadik-s8815.dts
@@ -16,6 +16,7 @@
};
aliases {
+ serial0 = &uart0;
serial1 = &uart1;
};
@@ -40,6 +41,15 @@
pinctrl-names = "default";
pinctrl-0 = <&cd_default_mode>;
+ uart0 {
+ /* Only use RX/TX pins */
+ uart0_s8815_mode: uart0_mux {
+ u0_default_mux {
+ function = "u0";
+ groups = "u0txrx_a_1";
+ };
+ };
+ };
mmcsd-cd {
cd_default_mode: cd_default {
cd_default_cfg1 {
@@ -112,8 +122,14 @@
};
- /* Configure card detect for the uSD slot */
amba {
+ /* Activate RXTX on UART 0 */
+ uart0: uart@101fd000 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart0_s8815_mode>;
+ status = "okay";
+ };
+ /* Configure card detect for the uSD slot */
mmcsd: sdi@101f6000 {
cd-gpios = <&gpio3 15 GPIO_ACTIVE_LOW>;
};
diff --git a/arch/arm/boot/dts/ste-nomadik-stn8815.dtsi b/arch/arm/boot/dts/ste-nomadik-stn8815.dtsi
index ef794a33b4dc..f68988ac800c 100644
--- a/arch/arm/boot/dts/ste-nomadik-stn8815.dtsi
+++ b/arch/arm/boot/dts/ste-nomadik-stn8815.dtsi
@@ -97,14 +97,6 @@
pinctrl {
compatible = "stericsson,stn8815-pinctrl";
/* Pin configurations */
- uart0 {
- uart0_default_mux: uart0_mux {
- u0_default_mux {
- function = "u0";
- groups = "u0_a_1";
- };
- };
- };
uart1 {
uart1_default_mux: uart1_mux {
u1_default_mux {
@@ -755,8 +747,6 @@
interrupts = <12>;
clocks = <&uart0clk>, <&pclkuart0>;
clock-names = "uartclk", "apb_pclk";
- pinctrl-names = "default";
- pinctrl-0 = <&uart0_default_mux>;
status = "disabled";
};