ARM: dts: aspeed: Add LPC reset controller node

On both the ast2400 and ast2500 SoCs, the LPC reset controller is
required to bring the UARTs out of reset without waiting for the LPC
reset to be deasserted.

Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Signed-off-by: Joel Stanley <joel@jms.id.au>

diff --git a/arch/arm/boot/dts/aspeed-g4.dtsi b/arch/arm/boot/dts/aspeed-g4.dtsi
index 48c28a71ae7e366eda11254ce92731bd3e630d11..36ae23aa3b48f5ed172ff45d45695ecd3d9cbcfd 100644 (file)
--- a/arch/arm/boot/dts/aspeed-g4.dtsi
+++ b/arch/arm/boot/dts/aspeed-g4.dtsi
@@ -162,6 +162,7 @@ uart1: serial@1e783000 {
                                reg-shift = <2>;
                                interrupts = <9>;
                                clocks = <&syscon ASPEED_CLK_GATE_UART1CLK>;
+                               resets = <&lpc_reset 4>;
                                no-loopback-test;
                                status = "disabled";
                        };
@@ -249,6 +250,12 @@ lhc: lhc@20 {
                                                reg = <0x20 0x24 0x48 0x8>;
                                        };
 
+                                       lpc_reset: reset-controller@18 {
+                                               compatible = "aspeed,ast2400-lpc-reset";
+                                               reg = <0x18 0x4>;
+                                               #reset-cells = <1>;
+                                       };
+
                                        ibt: ibt@c0  {
                                                compatible = "aspeed,ast2400-ibt-bmc";
                                                reg = <0xc0 0x18>;
@@ -264,6 +271,7 @@ uart2: serial@1e78d000 {
                                reg-shift = <2>;
                                interrupts = <32>;
                                clocks = <&syscon ASPEED_CLK_GATE_UART2CLK>;
+                               resets = <&lpc_reset 5>;
                                no-loopback-test;
                                status = "disabled";
                        };
@@ -274,6 +282,7 @@ uart3: serial@1e78e000 {
                                reg-shift = <2>;
                                interrupts = <33>;
                                clocks = <&syscon ASPEED_CLK_GATE_UART3CLK>;
+                               resets = <&lpc_reset 6>;
                                no-loopback-test;
                                status = "disabled";
                        };
@@ -284,6 +293,7 @@ uart4: serial@1e78f000 {
                                reg-shift = <2>;
                                interrupts = <34>;
                                clocks = <&syscon ASPEED_CLK_GATE_UART4CLK>;
+                               resets = <&lpc_reset 7>;
                                no-loopback-test;
                                status = "disabled";
                        };

diff --git a/arch/arm/boot/dts/aspeed-g5.dtsi b/arch/arm/boot/dts/aspeed-g5.dtsi
index 8eac57c338804707e14d5dee08ce297ebde43241..17ee0fa33a143a42b5cc2734d0809b48bf0e8926 100644 (file)
--- a/arch/arm/boot/dts/aspeed-g5.dtsi
+++ b/arch/arm/boot/dts/aspeed-g5.dtsi
@@ -205,6 +205,7 @@ uart1: serial@1e783000 {
                                reg-shift = <2>;
                                interrupts = <9>;
                                clocks = <&syscon ASPEED_CLK_GATE_UART1CLK>;
+                               resets = <&lpc_reset 4>;
                                no-loopback-test;
                                status = "disabled";
                        };
@@ -299,6 +300,12 @@ lhc: lhc@20 {
                                                reg = <0x20 0x24 0x48 0x8>;
                                        };
 
+                                       lpc_reset: reset-controller@18 {
+                                               compatible = "aspeed,ast2500-lpc-reset";
+                                               reg = <0x18 0x4>;
+                                               #reset-cells = <1>;
+                                       };
+
                                        ibt: ibt@c0 {
                                                compatible = "aspeed,ast2500-ibt-bmc";
                                                reg = <0xc0 0x18>;
@@ -314,6 +321,7 @@ uart2: serial@1e78d000 {
                                reg-shift = <2>;
                                interrupts = <32>;
                                clocks = <&syscon ASPEED_CLK_GATE_UART2CLK>;
+                               resets = <&lpc_reset 5>;
                                no-loopback-test;
                                status = "disabled";
                        };
@@ -324,6 +332,7 @@ uart3: serial@1e78e000 {
                                reg-shift = <2>;
                                interrupts = <33>;
                                clocks = <&syscon ASPEED_CLK_GATE_UART3CLK>;
+                               resets = <&lpc_reset 6>;
                                no-loopback-test;
                                status = "disabled";
                        };
@@ -334,6 +343,7 @@ uart4: serial@1e78f000 {
                                reg-shift = <2>;
                                interrupts = <34>;
                                clocks = <&syscon ASPEED_CLK_GATE_UART4CLK>;
+                               resets = <&lpc_reset 7>;
                                no-loopback-test;
                                status = "disabled";
                        };