xref: /kernel/linux/linux-6.6/arch/arm64/boot/dts/qcom/sc7280-chrome-common.dtsi

// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
 * sc7280 fragment for devices with Chrome bootloader
 *
 * This file mainly tries to abstract out the memory protections put into
 * place by the Chrome bootloader which are different than what's put into
 * place by Qualcomm's typical bootloader. It also has a smattering of other
 * things that will hold true for any conceivable Chrome design
 *
 * Copyright 2022 Google LLC.
 */

/*
 * Reserved memory changes
 *
 * Delete all unused memory nodes and define the peripheral memory regions
 * required by the setup for Chrome boards.
 */

/delete-node/ &hyp_mem;
/delete-node/ &xbl_mem;
/delete-node/ &reserved_xbl_uefi_log;
/delete-node/ &sec_apps_mem;

/ {
	reserved-memory {
		adsp_mem: memory@86700000 {
			reg = <0x0 0x86700000 0x0 0x2800000>;
			no-map;
		};

		camera_mem: memory@8ad00000 {
			reg = <0x0 0x8ad00000 0x0 0x500000>;
			no-map;
		};

		venus_mem: memory@8b200000 {
			reg = <0x0 0x8b200000 0x0 0x500000>;
			no-map;
		};

		wpss_mem: memory@9ae00000 {
			reg = <0x0 0x9ae00000 0x0 0x1900000>;
			no-map;
		};
	};
};

&lpass_aon {
	status = "okay";
};

&lpass_core {
	status = "okay";
};

&lpass_hm {
	status = "okay";
};

&lpasscc {
	status = "okay";
};

&pdc_reset {
	status = "okay";
};

/* The PMIC PON code isn't compatible w/ how Chrome EC/BIOS handle things. */
&pmk8350_pon {
	status = "disabled";
};

/*
 * Chrome designs always boot from SPI flash hooked up to the qspi.
 *
 * It's expected that all boards will support "dual SPI" at 37.5 MHz.
 * If some boards need a different speed or have a package that allows
 * Quad SPI together with WP then those boards can easily override.
 */
&qspi {
	status = "okay";
	pinctrl-names = "default", "sleep";
	pinctrl-0 = <&qspi_clk>, <&qspi_cs0>, <&qspi_data0>, <&qspi_data1>;
	pinctrl-1 = <&qspi_sleep>;

	spi_flash: flash@0 {
		compatible = "jedec,spi-nor";
		reg = <0>;

		spi-max-frequency = <37500000>;
		spi-tx-bus-width = <2>;
		spi-rx-bus-width = <2>;
	};
};

&remoteproc_wpss {
	status = "okay";
	firmware-name = "ath11k/WCN6750/hw1.0/wpss.mdt";
};

&scm {
	/* TF-A firmware maps memory cached so mark dma-coherent to match. */
	dma-coherent;
};

&watchdog {
	status = "okay";
};

&wifi {
	status = "okay";

	wifi-firmware {
		iommus = <&apps_smmu 0x1c02 0x1>;
	};
};

/* PINCTRL - chrome-common pinctrl */

&tlmm {
	qspi_sleep: qspi-sleep-state {
		pins = "gpio12", "gpio13", "gpio14", "gpio15";

		/*
		 * When we're not actively transferring we want pins as GPIOs
		 * with output disabled so that the quad SPI IP block stops
		 * driving them. We rely on the normal pulls configured in
		 * the active state and don't redefine them here. Also note
		 * that we don't need the reverse (output-enable) in the
		 * normal mode since the "output-enable" only matters for
		 * GPIO function.
		 */
		function = "gpio";
		output-disable;
	};
};