diff options
| author | Allen-KH Cheng <allen-kh.cheng@mediatek.com> | 2023-01-17 06:26:40 +0300 |
|---|---|---|
| committer | Matthias Brugger <matthias.bgg@gmail.com> | 2023-01-19 20:44:57 +0300 |
| commit | 7d1ae5926d3216f823be56b79202711dd0b83cdb (patch) | |
| tree | 4aca95aaafc4dbfc796fced9da434a6a0f56b9b7 | |
| parent | 1e28f6a35f7adec653dd04240ce971f9de598e16 (diff) | |
| download | linux-7d1ae5926d3216f823be56b79202711dd0b83cdb.tar.xz | |
soc: mediatek: pm-domains: Add buck isolation setting in power domain
In some chipsets, we need to disable EXT_BUCK_ISO before turning on the
specific power pm-domains (mtcmos), such as ADSP in MT8192 and CAM_VCORE
in MT8188.
Add the MTK_SCPD_EXT_BUCK_ISO flag to control the buck isolation setting
in the mediatek power domain driver.
Signed-off-by: Allen-KH Cheng <allen-kh.cheng@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230117032640.13504-3-allen-kh.cheng@mediatek.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
| -rw-r--r-- | drivers/soc/mediatek/mtk-pm-domains.c | 8 | ||||
| -rw-r--r-- | drivers/soc/mediatek/mtk-pm-domains.h | 1 |
2 files changed, 9 insertions, 0 deletions
diff --git a/drivers/soc/mediatek/mtk-pm-domains.c b/drivers/soc/mediatek/mtk-pm-domains.c index ea3878bf4387..354249cc1b12 100644 --- a/drivers/soc/mediatek/mtk-pm-domains.c +++ b/drivers/soc/mediatek/mtk-pm-domains.c @@ -219,6 +219,10 @@ static int scpsys_power_on(struct generic_pm_domain *genpd) if (ret) goto err_reg; + if (pd->data->ext_buck_iso_offs && MTK_SCPD_CAPS(pd, MTK_SCPD_EXT_BUCK_ISO)) + regmap_clear_bits(scpsys->base, pd->data->ext_buck_iso_offs, + pd->data->ext_buck_iso_mask); + /* subsys power on */ regmap_set_bits(scpsys->base, pd->data->ctl_offs, PWR_ON_BIT); regmap_set_bits(scpsys->base, pd->data->ctl_offs, PWR_ON_2ND_BIT); @@ -273,6 +277,10 @@ static int scpsys_power_off(struct generic_pm_domain *genpd) if (ret < 0) return ret; + if (pd->data->ext_buck_iso_offs && MTK_SCPD_CAPS(pd, MTK_SCPD_EXT_BUCK_ISO)) + regmap_set_bits(scpsys->base, pd->data->ext_buck_iso_offs, + pd->data->ext_buck_iso_mask); + clk_bulk_disable_unprepare(pd->num_subsys_clks, pd->subsys_clks); /* subsys power off */ diff --git a/drivers/soc/mediatek/mtk-pm-domains.h b/drivers/soc/mediatek/mtk-pm-domains.h index a5f24c58e35a..5ec53ee073c4 100644 --- a/drivers/soc/mediatek/mtk-pm-domains.h +++ b/drivers/soc/mediatek/mtk-pm-domains.h @@ -10,6 +10,7 @@ #define MTK_SCPD_DOMAIN_SUPPLY BIT(4) /* can't set MTK_SCPD_KEEP_DEFAULT_OFF at the same time */ #define MTK_SCPD_ALWAYS_ON BIT(5) +#define MTK_SCPD_EXT_BUCK_ISO BIT(6) #define MTK_SCPD_CAPS(_scpd, _x) ((_scpd)->data->caps & (_x)) #define SPM_VDE_PWR_CON 0x0210 |