diff mbox series

[v4,09/19] arm64: dts: mediatek: asurada: Add Cr50 TPM

Message ID 20220629155956.1138955-10-nfraprado@collabora.com (mailing list archive)
State New, archived
Headers show
Series Introduce support for MediaTek MT8192 Google Chromebooks | expand

Commit Message

Nícolas F. R. A. Prado June 29, 2022, 3:59 p.m. UTC 
The Asurada platform has a Google Security Chip connected to the SPI5
bus. It runs the cr50 firmware and provides TPM functionality. Add
support for it.

Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Tested-by: Chen-Yu Tsai <wenst@chromium.org>
---

(no changes since v1)

 .../arm64/boot/dts/mediatek/mt8192-asurada.dtsi | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
index 07405dea4d9d..fe626535ee5d 100644
--- a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
@@ -5,6 +5,7 @@ 
  */
 /dts-v1/;
 #include "mt8192.dtsi"
+#include <dt-bindings/gpio/gpio.h>
 
 / {
 	aliases {
@@ -353,6 +354,13 @@  &pio {
 			  "AUD_DAT_MISO0",
 			  "AUD_DAT_MISO1";
 
+	cr50_int: cr50-irq-default-pins {
+		pins-gsc-ap-int-odl {
+			pinmux = <PINMUX_GPIO171__FUNC_GPIO171>;
+			input-enable;
+		};
+	};
+
 	cros_ec_int: cros-ec-irq-default-pins {
 		pins-ec-ap-int-odl {
 			pinmux = <PINMUX_GPIO5__FUNC_GPIO5>;
@@ -513,6 +521,15 @@  &spi5 {
 	mediatek,pad-select = <0>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&spi5_pins>;
+
+	cr50@0 {
+		compatible = "google,cr50";
+		reg = <0>;
+		interrupts-extended = <&pio 171 IRQ_TYPE_EDGE_RISING>;
+		spi-max-frequency = <1000000>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&cr50_int>;
+	};
 };
 
 &uart0 {