Commit 076b0597 authored by Sascha Hauer's avatar Sascha Hauer Committed by Chanwoo Choi
Browse files

PM / devfreq: rockchip-dfi: Add RK3568 support 

This adds RK3568 support to the DFI driver.  Only iniitialization
differs from the currently supported RK3399.

Link: https://lore.kernel.org/all/20231018061714.3553817-11-s.hauer@pengutronix.de/


Signed-off-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
Acked-by: default avatarHeiko Stuebner <heiko@sntech.de>
Signed-off-by: default avatarChanwoo Choi <cw00.choi@samsung.com>
parent d3b0f6ab

drivers/devfreq/event/rockchip-dfi.c

+27 −0
Original line number Diff line number Diff line
@@ -23,6 +23,7 @@ 


#include <soc/rockchip/rockchip_grf.h>

#include <soc/rockchip/rk3399_grf.h>

#include <soc/rockchip/rk3568_grf.h>



#define DMC_MAX_CHANNELS	2
@@ -211,10 +212,36 @@ static int rk3399_dfi_init(struct rockchip_dfi *dfi) 
	return 0;

};



static int rk3568_dfi_init(struct rockchip_dfi *dfi)

{

	struct regmap *regmap_pmu = dfi->regmap_pmu;

	u32 reg2, reg3;



	regmap_read(regmap_pmu, RK3568_PMUGRF_OS_REG2, &reg2);

	regmap_read(regmap_pmu, RK3568_PMUGRF_OS_REG3, &reg3);



	/* lower 3 bits of the DDR type */

	dfi->ddr_type = FIELD_GET(RK3568_PMUGRF_OS_REG2_DRAMTYPE_INFO, reg2);



	/*

	 * For version three and higher the upper two bits of the DDR type are

	 * in RK3568_PMUGRF_OS_REG3

	 */

	if (FIELD_GET(RK3568_PMUGRF_OS_REG3_SYSREG_VERSION, reg3) >= 0x3)

		dfi->ddr_type |= FIELD_GET(RK3568_PMUGRF_OS_REG3_DRAMTYPE_INFO_V3, reg3) << 3;



	dfi->channel_mask = BIT(0);

	dfi->max_channels = 1;



	return 0;

};



static const struct of_device_id rockchip_dfi_id_match[] = {

	{ .compatible = "rockchip,rk3399-dfi", .data = rk3399_dfi_init },

	{ .compatible = "rockchip,rk3568-dfi", .data = rk3568_dfi_init },

	{ },

};



MODULE_DEVICE_TABLE(of, rockchip_dfi_id_match);



static int rockchip_dfi_probe(struct platform_device *pdev)

include/soc/rockchip/rk3568_grf.h

0 → 100644
+12 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0+ */

#ifndef __SOC_RK3568_GRF_H

#define __SOC_RK3568_GRF_H



#define RK3568_PMUGRF_OS_REG2		0x208

#define RK3568_PMUGRF_OS_REG2_DRAMTYPE_INFO		GENMASK(15, 13)



#define RK3568_PMUGRF_OS_REG3		0x20c

#define RK3568_PMUGRF_OS_REG3_DRAMTYPE_INFO_V3		GENMASK(13, 12)

#define RK3568_PMUGRF_OS_REG3_SYSREG_VERSION		GENMASK(31, 28)



#endif /* __SOC_RK3568_GRF_H */