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Message-ID: <53bae8377e4771951e9f3eacc899b56d430d24d5.camel@mediatek.com>
Date: Tue, 3 Jan 2023 05:51:28 +0000
From: Chunfeng Yun (云春峰)
<Chunfeng.Yun@...iatek.com>
To: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-mediatek@...ts.infradead.org"
<linux-mediatek@...ts.infradead.org>,
"linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
"maz@...nel.org" <maz@...nel.org>,
"robh+dt@...nel.org" <robh+dt@...nel.org>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"tglx@...utronix.de" <tglx@...utronix.de>,
"linus.walleij@...aro.org" <linus.walleij@...aro.org>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
"krzysztof.kozlowski+dt@...aro.org"
<krzysztof.kozlowski+dt@...aro.org>,
"lee@...nel.org" <lee@...nel.org>,
"matthias.bgg@...il.com" <matthias.bgg@...il.com>,
"bero@...libre.com" <bero@...libre.com>,
"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
"angelogioacchino.delregno@...labora.com"
<angelogioacchino.delregno@...labora.com>
Subject: Re: [PATCH v6 7/7] arm64: dts: mediatek: Initial mt8365-evk support
On Fri, 2022-12-30 at 21:35 +0100, Bernhard Rosenkränzer wrote:
> From: Fabien Parent <fparent@...libre.com>
>
> This adds minimal support for the Mediatek 8365 SOC and the EVK
> reference
> board, allowing the board to boot to initramfs with serial port I/O.
>
> Signed-off-by: Fabien Parent <fparent@...libre.com>
> [bero@...libre.com: Removed parts depending on drivers that aren't
> upstream yet, cleanups, add CPU cache layout, add systimer]
> Signed-off-by: Bernhard Rosenkränzer <bero@...libre.com>
> Tested-by: Kevin Hilman <khilman@...libre.com>
> ---
> arch/arm64/boot/dts/mediatek/Makefile | 1 +
> arch/arm64/boot/dts/mediatek/mt8365-evk.dts | 169 +++++++++
> arch/arm64/boot/dts/mediatek/mt8365.dtsi | 374
> ++++++++++++++++++++
> 3 files changed, 544 insertions(+)
> create mode 100644 arch/arm64/boot/dts/mediatek/mt8365-evk.dts
> create mode 100644 arch/arm64/boot/dts/mediatek/mt8365.dtsi
>
> diff --git a/arch/arm64/boot/dts/mediatek/Makefile
> b/arch/arm64/boot/dts/mediatek/Makefile
> index 813e735c5b96d..d78523c5a7dd6 100644
> --- a/arch/arm64/boot/dts/mediatek/Makefile
> +++ b/arch/arm64/boot/dts/mediatek/Makefile
> @@ -47,4 +47,5 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += mt8195-cherry-
> tomato-r2.dtb
> dtb-$(CONFIG_ARCH_MEDIATEK) += mt8195-cherry-tomato-r3.dtb
> dtb-$(CONFIG_ARCH_MEDIATEK) += mt8195-demo.dtb
> dtb-$(CONFIG_ARCH_MEDIATEK) += mt8195-evb.dtb
> +dtb-$(CONFIG_ARCH_MEDIATEK) += mt8365-evk.dtb
> dtb-$(CONFIG_ARCH_MEDIATEK) += mt8516-pumpkin.dtb
> diff --git a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
> b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
> new file mode 100644
> index 0000000000000..275ea3a0e7085
> --- /dev/null
> +++ b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
> @@ -0,0 +1,169 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (c) 2021-2022 BayLibre, SAS.
> + * Authors:
> + * Fabien Parent <fparent@...libre.com>
> + * Bernhard Rosenkränzer <bero@...libre.com>
> + */
> +
> +/dts-v1/;
> +
> +#include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/input/input.h>
> +#include <dt-bindings/pinctrl/mt8365-pinfunc.h>
> +#include "mt8365.dtsi"
> +
> +/ {
> + model = "MediaTek MT8365 Open Platform EVK";
> + compatible = "mediatek,mt8365-evk", "mediatek,mt8365";
> +
> + aliases {
> + serial0 = &uart0;
> + };
> +
> + chosen {
> + stdout-path = "serial0:921600n8";
> + };
> +
> + firmware {
> + optee {
> + compatible = "linaro,optee-tz";
> + method = "smc";
> + };
> + };
> +
> + gpio-keys {
> + compatible = "gpio-keys";
> + input-name = "gpio-keys";
> + pinctrl-names = "default";
> + pinctrl-0 = <&gpio_keys>;
> +
> + key-volume-up {
> + gpios = <&pio 24 GPIO_ACTIVE_LOW>;
> + label = "volume_up";
> + linux,code = <KEY_VOLUMEUP>;
> + wakeup-source;
> + debounce-interval = <15>;
> + };
> + };
> +
> + memory@...00000 {
> + device_type = "memory";
> + reg = <0 0x40000000 0 0xc0000000>;
> + };
> +
> + usb_otg_vbus: regulator-0 {
> + compatible = "regulator-fixed";
> + regulator-name = "otg_vbus";
> + regulator-min-microvolt = <5000000>;
> + regulator-max-microvolt = <5000000>;
> + gpio = <&pio 16 GPIO_ACTIVE_HIGH>;
> + enable-active-high;
> + };
> +
> + reserved-memory {
> + #address-cells = <2>;
> + #size-cells = <2>;
> + ranges;
> +
> + /* 128 KiB reserved for ARM Trusted Firmware (BL31) */
> + bl31_secmon_reserved: secmon@...00000 {
> + no-map;
> + reg = <0 0x43000000 0 0x20000>;
> + };
> +
> + /* 12 MiB reserved for OP-TEE (BL32)
> + * +-----------------------+ 0x43e0_0000
> + * | SHMEM 2MiB |
> + * +-----------------------+ 0x43c0_0000
> + * | | TA_RAM 8MiB |
> + * + TZDRAM +--------------+ 0x4340_0000
> + * | | TEE_RAM 2MiB |
> + * +-----------------------+ 0x4320_0000
> + */
> + optee_reserved: optee@...00000 {
> + no-map;
> + reg = <0 0x43200000 0 0x00c00000>;
> + };
> + };
> +};
> +
> +&pio {
> + gpio_keys: gpio-keys-pins {
> + pins {
> + pinmux = <MT8365_PIN_24_KPCOL0__FUNC_KPCOL0>;
> + bias-pull-up;
> + input-enable;
> + };
> + };
> +
> + uart0_pins: uart0-pins {
> + pins {
> + pinmux = <MT8365_PIN_35_URXD0__FUNC_URXD0>,
> + <MT8365_PIN_36_UTXD0__FUNC_UTXD0>;
> + };
> + };
> +
> + uart1_pins: uart1-pins {
> + pins {
> + pinmux = <MT8365_PIN_37_URXD1__FUNC_URXD1>,
> + <MT8365_PIN_38_UTXD1__FUNC_UTXD1>;
> + };
> + };
> +
> + uart2_pins: uart2-pins {
> + pins {
> + pinmux = <MT8365_PIN_39_URXD2__FUNC_URXD2>,
> + <MT8365_PIN_40_UTXD2__FUNC_UTXD2>;
> + };
> + };
> +
> + usb_pins: usb-pins {
> + pins-id {
> + pinmux = <MT8365_PIN_17_GPIO17__FUNC_GPIO17>;
> + input-enable;
> + bias-pull-up;
> + };
> +
> + pins-usb0-vbus {
> + pinmux =
> <MT8365_PIN_16_GPIO16__FUNC_USB_DRVVBUS>;
> + output-high;
> + };
> +
> + pin-usb1-vbus {
> + pinmux = <MT8365_PIN_18_GPIO18__FUNC_GPIO18>;
> + output-high;
> + };
> + };
> +
> + pwm_pins: pwm-pins {
> + pins {
> + pinmux = <MT8365_PIN_19_DISP_PWM__FUNC_PWM_A>,
> + <MT8365_PIN_116_I2S_BCK__FUNC_PWM_C>;
> + };
> + };
> +};
> +
> +&pwm {
> + pinctrl-0 = <&pwm_pins>;
> + pinctrl-names = "default";
> + status = "okay";
> +};
> +
> +&uart0 {
> + pinctrl-0 = <&uart0_pins>;
> + pinctrl-names = "default";
> + status = "okay";
> +};
> +
> +&uart1 {
> + pinctrl-0 = <&uart1_pins>;
> + pinctrl-names = "default";
> + status = "okay";
> +};
> +
> +&uart2 {
> + pinctrl-0 = <&uart2_pins>;
> + pinctrl-names = "default";
> + status = "okay";
> +};
> diff --git a/arch/arm64/boot/dts/mediatek/mt8365.dtsi
> b/arch/arm64/boot/dts/mediatek/mt8365.dtsi
> new file mode 100644
> index 0000000000000..60a211ba91dbd
> --- /dev/null
> +++ b/arch/arm64/boot/dts/mediatek/mt8365.dtsi
> @@ -0,0 +1,374 @@
> +// SPDX-License-Identifier: (GPL-2.0 OR MIT)
> +/*
> + * (C) 2018 MediaTek Inc.
> + * Copyright (C) 2022 BayLibre SAS
> + * Fabien Parent <fparent@...libre.com>
> + * Bernhard Rosenkränzer <bero@...libre.com>
> + */
> +#include <dt-bindings/clock/mediatek,mt8365-clk.h>
> +#include <dt-bindings/interrupt-controller/arm-gic.h>
> +#include <dt-bindings/interrupt-controller/irq.h>
> +#include <dt-bindings/phy/phy.h>
> +#include <dt-bindings/thermal/thermal.h>
> +
> +/ {
> + compatible = "mediatek,mt8365";
> + interrupt-parent = <&sysirq>;
> + #address-cells = <2>;
> + #size-cells = <2>;
> +
> + cpus {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + cpu-map {
> + cluster0 {
> + core0 {
> + cpu = <&cpu0>;
> + };
> + core1 {
> + cpu = <&cpu1>;
> + };
> + core2 {
> + cpu = <&cpu2>;
> + };
> + core3 {
> + cpu = <&cpu3>;
> + };
> + };
> + };
> +
> + cpu0: cpu@0 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a53";
> + reg = <0x0>;
> + #cooling-cells = <2>;
> + enable-method = "psci";
> + i-cache-size = <0x8000>;
> + i-cache-line-size = <64>;
> + i-cache-sets = <256>;
> + d-cache-size = <0x8000>;
> + d-cache-line-size = <64>;
> + d-cache-sets = <256>;
> + next-level-cache = <&l2>;
> + };
> +
> + cpu1: cpu@1 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a53";
> + reg = <0x1>;
> + #cooling-cells = <2>;
> + enable-method = "psci";
> + i-cache-size = <0x8000>;
> + i-cache-line-size = <64>;
> + i-cache-sets = <256>;
> + d-cache-size = <0x8000>;
> + d-cache-line-size = <64>;
> + d-cache-sets = <256>;
> + next-level-cache = <&l2>;
> + };
> +
> + cpu2: cpu@2 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a53";
> + reg = <0x2>;
> + #cooling-cells = <2>;
> + enable-method = "psci";
> + i-cache-size = <0x8000>;
> + i-cache-line-size = <64>;
> + i-cache-sets = <256>;
> + d-cache-size = <0x8000>;
> + d-cache-line-size = <64>;
> + d-cache-sets = <256>;
> + next-level-cache = <&l2>;
> + };
> +
> + cpu3: cpu@3 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a53";
> + reg = <0x3>;
> + #cooling-cells = <2>;
> + enable-method = "psci";
> + i-cache-size = <0x8000>;
> + i-cache-line-size = <64>;
> + i-cache-sets = <256>;
> + d-cache-size = <0x8000>;
> + d-cache-line-size = <64>;
> + d-cache-sets = <256>;
> + next-level-cache = <&l2>;
> + };
> +
> + l2: l2-cache {
> + compatible = "cache";
> + cache-level = <2>;
> + cache-size = <0x80000>;
> + cache-line-size = <64>;
> + cache-sets = <512>;
> + cache-unified;
> + };
> + };
> +
> + clk26m: oscillator {
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <26000000>;
> + clock-output-names = "clk26m";
> + };
> +
> + psci {
> + compatible = "arm,psci-1.0";
> + method = "smc";
> + };
> +
> + soc {
> + #address-cells = <2>;
> + #size-cells = <2>;
> + compatible = "simple-bus";
> + ranges;
> +
> + gic: interrupt-controller@...0000 {
> + compatible = "arm,gic-v3";
> + #interrupt-cells = <4>;
> + interrupt-parent = <&gic>;
> + interrupt-controller;
> + reg = <0 0x0c000000 0 0x80000>, <0 0x0c080000 0
> 0x80000>;
> +
> + interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH 0>;
> + };
> +
> + topckgen: syscon@...00000 {
> + compatible = "mediatek,mt8365-topckgen",
> "syscon";
> + reg = <0 0x10000000 0 0x1000>;
> + #clock-cells = <1>;
> + };
> +
> + infracfg: syscon@...01000 {
> + compatible = "mediatek,mt8365-infracfg",
> "syscon";
> + reg = <0 0x10001000 0 0x1000>;
> + #clock-cells = <1>;
> + };
> +
> + pericfg: syscon@...03000 {
> + compatible = "mediatek,mt8365-pericfg",
> "syscon";
> + reg = <0 0x10003000 0 0x1000>;
> + #clock-cells = <1>;
> + };
> +
> + syscfg_pctl: syscfg-pctl@...05000 {
> + compatible = "mediatek,mt8365-syscfg",
> "syscon";
> + reg = <0 0x10005000 0 0x1000>;
> + };
> +
> + pio: pinctrl@...0b000 {
> + compatible = "mediatek,mt8365-pinctrl";
> + reg = <0 0x1000b000 0 0x1000>;
> + mediatek,pctl-regmap = <&syscfg_pctl>;
> + gpio-controller;
> + #gpio-cells = <2>;
> + interrupt-controller;
> + #interrupt-cells = <2>;
> + interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_HIGH>;
> + };
> +
> + apmixedsys: syscon@...0c000 {
> + compatible = "mediatek,mt8365-apmixedsys",
> "syscon";
> + reg = <0 0x1000c000 0 0x1000>;
> + #clock-cells = <1>;
> + };
> +
> + keypad: keypad@...10000 {
> + compatible = "mediatek,mt6779-keypad";
> + reg = <0 0x10010000 0 0x1000>;
> + wakeup-source;
> + interrupts = <GIC_SPI 124
> IRQ_TYPE_EDGE_FALLING>;
> + clocks = <&clk26m>;
> + clock-names = "kpd";
> + status = "disabled";
> + };
> +
> + mcucfg: syscon@...00000 {
> + compatible = "mediatek,mt8365-mcucfg",
> "syscon";
> + reg = <0 0x10200000 0 0x2000>;
> + #clock-cells = <1>;
> + };
> +
> + sysirq: interrupt-controller@...00a80 {
> + compatible = "mediatek,mt8365-sysirq",
> "mediatek,mt6577-sysirq";
> + interrupt-controller;
> + #interrupt-cells = <3>;
> + interrupt-parent = <&gic>;
> + reg = <0 0x10200a80 0 0x20>;
> + };
> +
> + infracfg_nao: infracfg@...0e000 {
> + compatible = "mediatek,mt8365-infracfg",
> "syscon";
> + reg = <0 0x1020e000 0 0x1000>;
> + };
> +
> + rng: rng@...0f000 {
> + compatible = "mediatek,mt8365-rng",
> "mediatek,mt7623-rng";
> + reg = <0 0x1020f000 0 0x100>;
> + clocks = <&infracfg CLK_IFR_TRNG>;
> + clock-names = "rng";
> + };
> +
> + apdma: dma-controller@...00280 {
> + compatible = "mediatek,mt8365-uart-dma",
> "mediatek,mt6577-uart-dma";
> + reg = <0 0x11000280 0 0x80>,
> + <0 0x11000300 0 0x80>,
> + <0 0x11000380 0 0x80>,
> + <0 0x11000400 0 0x80>,
> + <0 0x11000580 0 0x80>,
> + <0 0x11000600 0 0x80>;
> + interrupts = <GIC_SPI 45 IRQ_TYPE_LEVEL_LOW>,
> + <GIC_SPI 46 IRQ_TYPE_LEVEL_LOW>,
> + <GIC_SPI 47 IRQ_TYPE_LEVEL_LOW>,
> + <GIC_SPI 48 IRQ_TYPE_LEVEL_LOW>,
> + <GIC_SPI 51 IRQ_TYPE_LEVEL_LOW>,
> + <GIC_SPI 52 IRQ_TYPE_LEVEL_LOW>;
> + dma-requests = <6>;
> + clocks = <&infracfg CLK_IFR_AP_DMA>;
> + clock-names = "apdma";
> + #dma-cells = <1>;
> + };
> +
> + uart0: serial@...02000 {
> + compatible = "mediatek,mt8365-uart",
> "mediatek,mt6577-uart";
> + reg = <0 0x11002000 0 0x1000>;
> + interrupts = <GIC_SPI 35 IRQ_TYPE_LEVEL_LOW>;
> + clocks = <&clk26m>, <&infracfg CLK_IFR_UART0>;
> + clock-names = "baud", "bus";
> + dmas = <&apdma 0>, <&apdma 1>;
> + dma-names = "tx", "rx";
> + status = "disabled";
> + };
> +
> + uart1: serial@...03000 {
> + compatible = "mediatek,mt8365-uart",
> "mediatek,mt6577-uart";
> + reg = <0 0x11003000 0 0x1000>;
> + interrupts = <GIC_SPI 36 IRQ_TYPE_LEVEL_LOW>;
> + clocks = <&clk26m>, <&infracfg CLK_IFR_UART1>;
> + clock-names = "baud", "bus";
> + dmas = <&apdma 2>, <&apdma 3>;
> + dma-names = "tx", "rx";
> + status = "disabled";
> + };
> +
> + uart2: serial@...04000 {
> + compatible = "mediatek,mt8365-uart",
> "mediatek,mt6577-uart";
> + reg = <0 0x11004000 0 0x1000>;
> + interrupts = <GIC_SPI 37 IRQ_TYPE_LEVEL_LOW>;
> + clocks = <&clk26m>, <&infracfg CLK_IFR_UART2>;
> + clock-names = "baud", "bus";
> + dmas = <&apdma 4>, <&apdma 5>;
> + dma-names = "tx", "rx";
> + status = "disabled";
> + };
> +
> + pwm: pwm@...06000 {
> + compatible = "mediatek,mt8365-pwm";
> + reg = <0 0x11006000 0 0x1000>;
> + #pwm-cells = <2>;
> + interrupts = <GIC_SPI 76 IRQ_TYPE_LEVEL_LOW>;
> + clocks = <&infracfg CLK_IFR_PWM_HCLK>,
> + <&infracfg CLK_IFR_PWM>,
> + <&infracfg CLK_IFR_PWM1>,
> + <&infracfg CLK_IFR_PWM2>,
> + <&infracfg CLK_IFR_PWM3>;
> + clock-names = "top", "main", "pwm1", "pwm2",
> "pwm3";
> + };
> +
> + spi: spi@...0a000 {
> + compatible = "mediatek,mt8365-spi",
> "mediatek,mt7622-spi";
> + reg = <0 0x1100a000 0 0x100>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> + interrupts = <GIC_SPI 62 IRQ_TYPE_LEVEL_LOW>;
> + clocks = <&topckgen CLK_TOP_UNIVPLL2_D4>,
> + <&topckgen CLK_TOP_SPI_SEL>,
> + <&infracfg CLK_IFR_SPI0>;
> + clock-names = "parent-clk", "sel-clk", "spi-
> clk";
> + status = "disabled";
> + };
> +
> + ssusb: usb@...01000 {
> + compatible = "mediatek,mt8365-mtu3",
> "mediatek,mtu3";
> + reg = <0 0x11201000 0 0x2e00>, <0 0x11203e00 0
> 0x0100>;
> + reg-names = "mac", "ippc";
> + interrupts = <GIC_SPI 16 IRQ_TYPE_LEVEL_LOW>;
> + phys = <&u2port0 PHY_TYPE_USB2>,
> + <&u2port1 PHY_TYPE_USB2>;
> + clocks = <&topckgen CLK_TOP_SSUSB_TOP_CK_EN>,
> + <&infracfg CLK_IFR_SSUSB_REF>,
> + <&infracfg CLK_IFR_SSUSB_SYS>,
> + <&infracfg CLK_IFR_ICUSB>;
> + clock-names = "sys_ck", "ref_ck", "mcu_ck",
> "dma_ck";
> + #address-cells = <2>;
> + #size-cells = <2>;
> + ranges;
> + status = "disabled";
> +
> + usb_host: usb@...00000 {
> + compatible = "mediatek,mt8365-xhci",
> "mediatek,mtk-xhci";
> + reg = <0 0x11200000 0 0x1000>;
> + reg-names = "mac";
> + interrupts = <GIC_SPI 67
> IRQ_TYPE_LEVEL_LOW>;
> + clocks = <&topckgen
> CLK_TOP_SSUSB_TOP_CK_EN>,
> + <&infracfg CLK_IFR_SSUSB_REF>,
> + <&infracfg CLK_IFR_SSUSB_SYS>,
> + <&infracfg CLK_IFR_ICUSB>,
> + <&infracfg
> CLK_IFR_SSUSB_XHCI>;
> + clock-names = "sys_ck", "ref_ck",
> "mcu_ck",
> + "dma_ck", "xhci_ck";
> + status = "disabled";
> + };
> + };
> +
> + u3phy: phy@...c0000 {
> + compatible = "mediatek,mt8365-tphy",
> "mediatek,generic-tphy-v2";
> + #address-cells = <2>;
> + #size-cells = <2>;
> + #phy-cells = <1>;
> + ranges;
Prefer to use ranges with triplet value, refers to mt2712's
Thanks a lot
> +
> + u2port0: usb-phy@...c0000 {
> + reg = <0 0x11cc0000 0 0x400>;
> + clocks = <&topckgen
> CLK_TOP_SSUSB_PHY_CK_EN>,
> + <&topckgen
> CLK_TOP_USB20_48M_EN>;
> + clock-names = "ref", "da_ref";
> + #phy-cells = <1>;
> + };
> +
> + u2port1: usb-phy@...c1000 {
> + reg = <0 0x11cc1000 0 0x400>;
> + clocks = <&topckgen
> CLK_TOP_SSUSB_PHY_CK_EN>,
> + <&topckgen
> CLK_TOP_USB20_48M_EN>;
> + clock-names = "ref", "da_ref";
> + #phy-cells = <1>;
> + };
> + };
> + };
> +
> + timer {
> + compatible = "arm,armv8-timer";
> + interrupt-parent = <&gic>;
> + interrupts = <GIC_PPI 13 IRQ_TYPE_LEVEL_LOW 0>,
> + <GIC_PPI 14 IRQ_TYPE_LEVEL_LOW 0>,
> + <GIC_PPI 11 IRQ_TYPE_LEVEL_LOW 0>,
> + <GIC_PPI 10 IRQ_TYPE_LEVEL_LOW 0>;
> + };
> +
> + system_clk: dummy13m {
> + compatible = "fixed-clock";
> + clock-frequency = <13000000>;
> + #clock-cells = <0>;
> + };
> +
> + systimer: timer@...17000 {
> + compatible = "mediatek,mt6795-systimer";
> + reg = <0 0x10017000 0 0x10>;
> + interrupts = <GIC_SPI 138 IRQ_TYPE_LEVEL_LOW>;
> + clocks = <&system_clk>;
> + clock-names = "clk13m";
> + };
> +};
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