[PATCH linux dev-4.7 v4] ARM: dts: aspeed: Modify Laanyang BMC device tree

[Ken Chen]

Modify Lanyang dts and add lanyang initial in aspeed.c

Signed-off-by: Ken Chen <chen.kenyy at inventec.com>
---
 arch/arm/boot/dts/aspeed-bmc-opp-lanyang.dts | 13 ++++++-------
 arch/arm/mach-aspeed/aspeed.c                | 17 +++++++++++++++++
 2 files changed, 23 insertions(+), 7 deletions(-)

diff --git a/arch/arm/boot/dts/aspeed-bmc-opp-lanyang.dts b/arch/arm/boot/dts/aspeed-bmc-opp-lanyang.dts
index 176e4b4..6456458 100644
--- a/arch/arm/boot/dts/aspeed-bmc-opp-lanyang.dts
+++ b/arch/arm/boot/dts/aspeed-bmc-opp-lanyang.dts
@@ -1,4 +1,4 @@
-/dts-v1/;
+/dts-v3/;
 
 #include "aspeed-g5.dtsi"
 #include <dt-bindings/gpio/aspeed-gpio.h>
@@ -302,18 +302,17 @@
 };
 
 &gpio {
-	line_apss_reset {
-		gpio-hog;
-		gpios = <ASPEED_GPIO(E, 4) GPIO_ACTIVE_HIGH>;
-		output-high;
-		line-name = "BMC_APSS_RESET_N";
-	};
+
 };
 
 &vuart {
 	status = "okay";
 };
 
+&gfx {
+        status = "okay";
+};
+
 &pinctrl {
 	aspeed,external-nodes = <&gfx &lhc>;
 };
diff --git a/arch/arm/mach-aspeed/aspeed.c b/arch/arm/mach-aspeed/aspeed.c
index a7b03a0..0717181 100644
--- a/arch/arm/mach-aspeed/aspeed.c
+++ b/arch/arm/mach-aspeed/aspeed.c
@@ -238,6 +238,21 @@ static void __init do_romulus_setup(void)
     writel(reg & ~BIT(4), AST_IO(AST_BASE_LPC | 0x98));
 }
 
+static void __init do_lanyang_setup(void)
+{
+        unsigned long reg;
+
+        do_common_setup();
+
+        /* Disable default behavior of UART1 being held in reset by LPCRST#.
+         * By releasing UART1 from being controlled by LPC reset, it becomes
+         * immediately available regardless of the host being up.
+         */
+        reg = readl(AST_IO(AST_BASE_LPC | 0x98));
+        /* Clear "Enable UART1 reset source from LPC" */
+        writel(reg & ~BIT(4), AST_IO(AST_BASE_LPC | 0x98));
+}
+
 #define SCU_PASSWORD	0x1688A8A8
 
 static void __init aspeed_init_early(void)
@@ -275,6 +290,8 @@ static void __init aspeed_init_early(void)
 		do_witherspoon_setup();
 	if (of_machine_is_compatible("ibm,romulus-bmc"))
 		do_romulus_setup();
+        if (of_machine_is_compatible("inventec,lanyang-bmc"))
+                do_lanyang_setup();
 }
 
 static void __init aspeed_map_io(void)
-- 
2.9.3