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soc: mediatek: pm-domains: Add buck isolation setting in power domain

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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>
This commit is contained in:
Allen-KH Cheng 2023-01-17 11:26:40 +08:00 committed by Matthias Brugger
parent 1e28f6a35f
commit 7d1ae5926d
2 changed files with 9 additions and 0 deletions
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8
drivers/soc/mediatek/mtk-pm-domains.c
View File

@ -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 */

1
drivers/soc/mediatek/mtk-pm-domains.h
View File

@ -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