GS101 has 14 mailbox controllers. Add the AP to APM mailbox node.
Mailbox controllers have a shared register that can be used for passing
the mailbox messages. The AP to APM mailbox controller is used just as a
doorbell mechanism. It raises interrupt to the firmware after the mailbox
message has been written to SRAM where the TX/RX rings are defined.
Signed-off-by: Tudor Ambarus <tudor.ambarus@xxxxxxxxxx>
---
arch/arm64/boot/dts/exynos/google/gs101.dtsi | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/arch/arm64/boot/dts/exynos/google/gs101.dtsi b/arch/arm64/boot/dts/exynos/google/gs101.dtsi
index 1441e9a252c2..6947dd081a0e 100644
--- a/arch/arm64/boot/dts/exynos/google/gs101.dtsi
+++ b/arch/arm64/boot/dts/exynos/google/gs101.dtsi
@@ -1445,6 +1445,15 @@ wakeup-interrupt-controller {
};
};
+ ap2apm_mailbox: mailbox@17610000 {
+ compatible = "google,gs101-mbox";
+ reg = <0x17610000 0x1000>;
+ clocks = <&cmu_apm CLK_GOUT_APM_MAILBOX_APM_AP_PCLK>;
+ clock-names = "pclk";
+ interrupts = <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH 0>;
+ #mbox-cells = <0>;
+ };
+
pinctrl_gsactrl: pinctrl@17940000 {
compatible = "google,gs101-pinctrl";
reg = <0x17940000 0x00001000>;
--
2.47.1.613.gc27f4b7a9f-goog
