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PM / devfreq: rockchip-dfi: add support for RK3588

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Add support for the RK3588 to the driver. The RK3588 has four DDR
channels with a register stride of 0x4000 between the channel
registers, also it has a DDRMON_CTRL register per channel.

Link: https://lore.kernel.org/all/20231018061714.3553817-20-s.hauer@pengutronix.de/
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
This commit is contained in:
Sascha Hauer 2023-10-18 08:17:07 +02:00 committed by Chanwoo Choi
parent bbe7cbd074
commit 481d97ba61
2 changed files with 53 additions and 1 deletions
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36
drivers/devfreq/event/rockchip-dfi.c
View File

@ -26,8 +26,9 @@
#include <soc/rockchip/rockchip_grf.h>
#include <soc/rockchip/rk3399_grf.h>
#include <soc/rockchip/rk3568_grf.h>
#include <soc/rockchip/rk3588_grf.h>
#define DMC_MAX_CHANNELS 2
#define DMC_MAX_CHANNELS 4
#define HIWORD_UPDATE(val, mask) ((val) | (mask) << 16)
@ -723,9 +724,42 @@ static int rk3568_dfi_init(struct rockchip_dfi *dfi)
return 0;
};
static int rk3588_dfi_init(struct rockchip_dfi *dfi)
{
struct regmap *regmap_pmu = dfi->regmap_pmu;
u32 reg2, reg3, reg4;
regmap_read(regmap_pmu, RK3588_PMUGRF_OS_REG2, &reg2);
regmap_read(regmap_pmu, RK3588_PMUGRF_OS_REG3, &reg3);
regmap_read(regmap_pmu, RK3588_PMUGRF_OS_REG4, &reg4);
/* lower 3 bits of the DDR type */
dfi->ddr_type = FIELD_GET(RK3588_PMUGRF_OS_REG2_DRAMTYPE_INFO, reg2);
/*
* For version three and higher the upper two bits of the DDR type are
* in RK3588_PMUGRF_OS_REG3
*/
if (FIELD_GET(RK3588_PMUGRF_OS_REG3_SYSREG_VERSION, reg3) >= 0x3)
dfi->ddr_type |= FIELD_GET(RK3588_PMUGRF_OS_REG3_DRAMTYPE_INFO_V3, reg3) << 3;
dfi->buswidth[0] = FIELD_GET(RK3588_PMUGRF_OS_REG2_BW_CH0, reg2) == 0 ? 4 : 2;
dfi->buswidth[1] = FIELD_GET(RK3588_PMUGRF_OS_REG2_BW_CH1, reg2) == 0 ? 4 : 2;
dfi->buswidth[2] = FIELD_GET(RK3568_PMUGRF_OS_REG2_BW_CH0, reg4) == 0 ? 4 : 2;
dfi->buswidth[3] = FIELD_GET(RK3588_PMUGRF_OS_REG2_BW_CH1, reg4) == 0 ? 4 : 2;
dfi->channel_mask = FIELD_GET(RK3588_PMUGRF_OS_REG2_CH_INFO, reg2) |
FIELD_GET(RK3588_PMUGRF_OS_REG2_CH_INFO, reg4) << 2;
dfi->max_channels = 4;
dfi->ddrmon_stride = 0x4000;
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 },
{ .compatible = "rockchip,rk3588-dfi", .data = rk3588_dfi_init },
{ },
};

18
include/soc/rockchip/rk3588_grf.h Normal file
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@ -0,0 +1,18 @@
/* SPDX-License-Identifier: GPL-2.0+ */
#ifndef __SOC_RK3588_GRF_H
#define __SOC_RK3588_GRF_H
#define RK3588_PMUGRF_OS_REG2 0x208
#define RK3588_PMUGRF_OS_REG2_DRAMTYPE_INFO GENMASK(15, 13)
#define RK3588_PMUGRF_OS_REG2_BW_CH0 GENMASK(3, 2)
#define RK3588_PMUGRF_OS_REG2_BW_CH1 GENMASK(19, 18)
#define RK3588_PMUGRF_OS_REG2_CH_INFO GENMASK(29, 28)
#define RK3588_PMUGRF_OS_REG3 0x20c
#define RK3588_PMUGRF_OS_REG3_DRAMTYPE_INFO_V3 GENMASK(13, 12)
#define RK3588_PMUGRF_OS_REG3_SYSREG_VERSION GENMASK(31, 28)
#define RK3588_PMUGRF_OS_REG4 0x210
#define RK3588_PMUGRF_OS_REG5 0x214
#endif /* __SOC_RK3588_GRF_H */