src/soc/amd/stoneyridge/chip.h

/* SPDX-License-Identifier: GPL-2.0-only */

#ifndef __STONEYRIDGE_CHIP_H__
#define __STONEYRIDGE_CHIP_H__

#include <stddef.h>
#include <stdint.h>
#include <commonlib/helpers.h>
#include <drivers/i2c/designware/dw_i2c.h>
#include <gpio.h>
#include <soc/i2c.h>
#include <acpi/acpi_device.h>

#define MAX_NODES 1
#if CONFIG(AMD_APU_MERLINFALCON)
#define MAX_DRAM_CH 2
#define MAX_DIMMS_PER_CH 2
#else /* AMD_APU_STONEYRIDGE || AMD_APU_PRAIRIEFALCON */
#define MAX_DRAM_CH 1
#define MAX_DIMMS_PER_CH 2
#endif

#define STONEY_I2C_DEV_MAX 4

struct soc_amd_stoneyridge_config {
	u8 spd_addr_lookup[MAX_NODES][MAX_DRAM_CH][MAX_DIMMS_PER_CH];
	enum {
		DRAM_CONTENTS_KEEP,
		DRAM_CONTENTS_CLEAR
	} dram_clear_on_reset;

	enum {
		/* Do not enable UMA in the system. */
		UMAMODE_NONE,
		/* Enable UMA with a specific size. */
		UMAMODE_SPECIFIED_SIZE,
		/* Let AGESA determine the proper size. Non-legacy requires
		 * the resolution to be specified PLATFORM_CONFIGURATION */
		UMAMODE_AUTO_LEGACY,
		UMAMODE_AUTO_NON_LEGACY,
	} uma_mode;

	/* Used if UMAMODE_SPECIFIED_SIZE is set. */
	size_t uma_size;

	/*
	 * If sb_reset_i2c_peripherals() is called, this devicetree register
	 * defines which I2C SCL will be toggled 9 times at 100 KHz.
	 * For example, should we need I2C0 and  I2C3 have their peripheral
	 * devices reset by toggling SCL, use:
	 *
	 * register i2c_scl_reset = (GPIO_I2C0_SCL | GPIO_I2C3_SCL)
	 */
	u8 i2c_scl_reset;
	struct dw_i2c_bus_config i2c[STONEY_I2C_DEV_MAX];
	u8 stapm_percent;
	u32 stapm_time_ms;
	u32 stapm_power_mw;
	/*
	 * This specifies the LVDS/eDP power-up sequence time for the delay
	 * between VaryBL and BLON.
	 * 0 - Use the VBIOS default (default). The video BIOS default is 32ms.
	 * n - Values other than zero specify a setting of (4 * n) milliseconds
	 *     time delay.
	 */
	u8 lvds_poseq_varybl_to_blon;
	u8 lvds_poseq_blon_to_varybl;
};

#endif /* __STONEYRIDGE_CHIP_H__ */