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PM / devfreq: rockchip-dfi: Add RK3568 support

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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: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
This commit is contained in:
Sascha Hauer 2023-10-18 08:16:58 +02:00 committed by Chanwoo Choi
parent d3b0f6ab0e
commit 076b0597f5
2 changed files with 39 additions and 0 deletions
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27
drivers/devfreq/event/rockchip-dfi.c
View File

@ -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)

12
include/soc/rockchip/rk3568_grf.h Normal file
View File

@ -0,0 +1,12 @@
/* 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 */