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;
		};

		mpss_mem: memory@8b800000 {
			reg = <0x0 0x8b800000 0x0 0xf600000>;
			no-map;
		};

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

		mba_mem: memory@9c700000 {
			reg = <0x0 0x9c700000 0x0 0x200000>;
			no-map;
		};
	};
};

/* 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";
	pinctrl-0 = <&qspi_clk>, <&qspi_cs0>, <&qspi_data01>;

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

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

/* Modem setup is different on Chrome setups than typical Qualcomm setup */
&remoteproc_mpss {
	status = "okay";
	compatible = "qcom,sc7280-mss-pil";
	iommus = <&apps_smmu 0x124 0x0>, <&apps_smmu 0x488 0x7>;
	memory-region = <&mba_mem>, <&mpss_mem>;
};

/* Increase the size from 2.5MB to 8MB */
&rmtfs_mem {
	reg = <0x0 0x9c900000 0x0 0x800000>;
};