[PATCH V4 1/4] arm64: dts: sc7180: Add wakeup support over UART RX

From: satya priya
Date: Thu Sep 03 2020 - 11:07:40 EST

Add the necessary pinctrl and interrupts to make UART wakeup capable.

If QUP function is selected in sleep state, UART RTS/RFR is pulled high
during suspend and BT SoC not able to send wakeup bytes. So, configure
GPIO mode in sleep state to keep it low during suspend.

Signed-off-by: satya priya <skakit@xxxxxxxxxxxxxx>
Reviewed-by: Akash Asthana <akashast@xxxxxxxxxxxxxx>
---
Changes in V2:
- As per Matthias's comment added wakeup support for all the UARTs
of SC7180.

Changes in V3:
- No change.

Changes in V4:
- As per Matthias's comment, added the reason for configuring GPIO
mode for sleep state in commit text.

arch/arm64/boot/dts/qcom/sc7180.dtsi | 98 ++++++++++++++++++++++++++++++------
1 file changed, 84 insertions(+), 14 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi b/arch/arm64/boot/dts/qcom/sc7180.dtsi
index d46b383..855b13e 100644
--- a/arch/arm64/boot/dts/qcom/sc7180.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi
@@ -793,9 +793,11 @@
reg = <0 0x00880000 0 0x4000>;
clock-names = "se";
clocks = <&gcc GCC_QUPV3_WRAP0_S0_CLK>;
- pinctrl-names = "default";
+ pinctrl-names = "default", "sleep";
pinctrl-0 = <&qup_uart0_default>;
- interrupts = <GIC_SPI 601 IRQ_TYPE_LEVEL_HIGH>;
+ pinctrl-1 = <&qup_uart0_sleep>;
+ interrupts-extended = <&intc GIC_SPI 601 IRQ_TYPE_LEVEL_HIGH>,
+ <&tlmm 37 IRQ_TYPE_EDGE_FALLING>;
power-domains = <&rpmhpd SC7180_CX>;
operating-points-v2 = <&qup_opp_table>;
interconnects = <&qup_virt MASTER_QUP_CORE_0 &qup_virt SLAVE_QUP_CORE_0>,
@@ -845,9 +847,11 @@
reg = <0 0x00884000 0 0x4000>;
clock-names = "se";
clocks = <&gcc GCC_QUPV3_WRAP0_S1_CLK>;
- pinctrl-names = "default";
+ pinctrl-names = "default", "sleep";
pinctrl-0 = <&qup_uart1_default>;
- interrupts = <GIC_SPI 602 IRQ_TYPE_LEVEL_HIGH>;
+ pinctrl-1 = <&qup_uart1_sleep>;
+ interrupts-extended = <&intc GIC_SPI 602 IRQ_TYPE_LEVEL_HIGH>,
+ <&tlmm 3 IRQ_TYPE_EDGE_FALLING>;
power-domains = <&rpmhpd SC7180_CX>;
operating-points-v2 = <&qup_opp_table>;
interconnects = <&qup_virt MASTER_QUP_CORE_0 &qup_virt SLAVE_QUP_CORE_0>,
@@ -931,9 +935,11 @@
reg = <0 0x0088c000 0 0x4000>;
clock-names = "se";
clocks = <&gcc GCC_QUPV3_WRAP0_S3_CLK>;
- pinctrl-names = "default";
+ pinctrl-names = "default", "sleep";
pinctrl-0 = <&qup_uart3_default>;
- interrupts = <GIC_SPI 604 IRQ_TYPE_LEVEL_HIGH>;
+ pinctrl-1 = <&qup_uart3_sleep>;
+ interrupts-extended = <&intc GIC_SPI 604 IRQ_TYPE_LEVEL_HIGH>,
+ <&tlmm 41 IRQ_TYPE_EDGE_FALLING>;
power-domains = <&rpmhpd SC7180_CX>;
operating-points-v2 = <&qup_opp_table>;
interconnects = <&qup_virt MASTER_QUP_CORE_0 &qup_virt SLAVE_QUP_CORE_0>,
@@ -1017,9 +1023,11 @@
reg = <0 0x00894000 0 0x4000>;
clock-names = "se";
clocks = <&gcc GCC_QUPV3_WRAP0_S5_CLK>;
- pinctrl-names = "default";
+ pinctrl-names = "default", "sleep";
pinctrl-0 = <&qup_uart5_default>;
- interrupts = <GIC_SPI 606 IRQ_TYPE_LEVEL_HIGH>;
+ pinctrl-1 = <&qup_uart5_sleep>;
+ interrupts-extended = <&intc GIC_SPI 606 IRQ_TYPE_LEVEL_HIGH>,
+ <&tlmm 28 IRQ_TYPE_EDGE_FALLING>;
power-domains = <&rpmhpd SC7180_CX>;
operating-points-v2 = <&qup_opp_table>;
interconnects = <&qup_virt MASTER_QUP_CORE_0 &qup_virt SLAVE_QUP_CORE_0>,
@@ -1084,9 +1092,11 @@
reg = <0 0x00a80000 0 0x4000>;
clock-names = "se";
clocks = <&gcc GCC_QUPV3_WRAP1_S0_CLK>;
- pinctrl-names = "default";
+ pinctrl-names = "default", "sleep";
pinctrl-0 = <&qup_uart6_default>;
- interrupts = <GIC_SPI 353 IRQ_TYPE_LEVEL_HIGH>;
+ pinctrl-1 = <&qup_uart6_sleep>;
+ interrupts-extended = <&intc GIC_SPI 353 IRQ_TYPE_LEVEL_HIGH>,
+ <&tlmm 62 IRQ_TYPE_EDGE_FALLING>;
power-domains = <&rpmhpd SC7180_CX>;
operating-points-v2 = <&qup_opp_table>;
interconnects = <&qup_virt MASTER_QUP_CORE_1 &qup_virt SLAVE_QUP_CORE_1>,
@@ -1256,9 +1266,11 @@
reg = <0 0x00a90000 0 0x4000>;
clock-names = "se";
clocks = <&gcc GCC_QUPV3_WRAP1_S4_CLK>;
- pinctrl-names = "default";
+ pinctrl-names = "default", "sleep";
pinctrl-0 = <&qup_uart10_default>;
- interrupts = <GIC_SPI 357 IRQ_TYPE_LEVEL_HIGH>;
+ pinctrl-1 = <&qup_uart10_sleep>;
+ interrupts-extended = <&intc GIC_SPI 357 IRQ_TYPE_LEVEL_HIGH>,
+ <&tlmm 89 IRQ_TYPE_EDGE_FALLING>;
power-domains = <&rpmhpd SC7180_CX>;
operating-points-v2 = <&qup_opp_table>;
interconnects = <&qup_virt MASTER_QUP_CORE_1 &qup_virt SLAVE_QUP_CORE_1>,
@@ -1308,9 +1320,11 @@
reg = <0 0x00a94000 0 0x4000>;
clock-names = "se";
clocks = <&gcc GCC_QUPV3_WRAP1_S5_CLK>;
- pinctrl-names = "default";
+ pinctrl-names = "default", "sleep";
pinctrl-0 = <&qup_uart11_default>;
- interrupts = <GIC_SPI 358 IRQ_TYPE_LEVEL_HIGH>;
+ pinctrl-1 = <&qup_uart11_sleep>;
+ interrupts-extended = <&intc GIC_SPI 358 IRQ_TYPE_LEVEL_HIGH>,
+ <&tlmm 56 IRQ_TYPE_EDGE_FALLING>;
power-domains = <&rpmhpd SC7180_CX>;
operating-points-v2 = <&qup_opp_table>;
interconnects = <&qup_virt MASTER_QUP_CORE_1 &qup_virt SLAVE_QUP_CORE_1>,
@@ -1638,6 +1652,14 @@
};
};

+ qup_uart0_sleep: qup-uart0-sleep {
+ pinmux {
+ pins = "gpio34", "gpio35",
+ "gpio36", "gpio37";
+ function = "gpio";
+ };
+ };
+
qup_uart1_default: qup-uart1-default {
pinmux {
pins = "gpio0", "gpio1",
@@ -1646,6 +1668,14 @@
};
};

+ qup_uart1_sleep: qup-uart1-sleep {
+ pinmux {
+ pins = "gpio0", "gpio1",
+ "gpio2", "gpio3";
+ function = "gpio";
+ };
+ };
+
qup_uart2_default: qup-uart2-default {
pinmux {
pins = "gpio15", "gpio16";
@@ -1661,6 +1691,14 @@
};
};

+ qup_uart3_sleep: qup-uart3-sleep {
+ pinmux {
+ pins = "gpio38", "gpio39",
+ "gpio40", "gpio41";
+ function = "gpio";
+ };
+ };
+
qup_uart4_default: qup-uart4-default {
pinmux {
pins = "gpio115", "gpio116";
@@ -1676,6 +1714,14 @@
};
};

+ qup_uart5_sleep: qup-uart5-sleep {
+ pinmux {
+ pins = "gpio25", "gpio26",
+ "gpio27", "gpio28";
+ function = "gpio";
+ };
+ };
+
qup_uart6_default: qup-uart6-default {
pinmux {
pins = "gpio59", "gpio60",
@@ -1684,6 +1730,14 @@
};
};

+ qup_uart6_sleep: qup-uart6-sleep {
+ pinmux {
+ pins = "gpio59", "gpio60",
+ "gpio61", "gpio62";
+ function = "gpio";
+ };
+ };
+
qup_uart7_default: qup-uart7-default {
pinmux {
pins = "gpio6", "gpio7";
@@ -1713,6 +1767,14 @@
};
};

+ qup_uart10_sleep: qup-uart10-sleep {
+ pinmux {
+ pins = "gpio86", "gpio87",
+ "gpio88", "gpio89";
+ function = "gpio";
+ };
+ };
+
qup_uart11_default: qup-uart11-default {
pinmux {
pins = "gpio53", "gpio54",
@@ -1721,6 +1783,14 @@
};
};

+ qup_uart11_sleep: qup-uart11-sleep {
+ pinmux {
+ pins = "gpio53", "gpio54",
+ "gpio55", "gpio56";
+ function = "gpio";
+ };
+ };
+
sdc1_on: sdc1-on {
pinconf-clk {
pins = "sdc1_clk";
--
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