Commit 7d1ae592 authored by Allen-KH Cheng's avatar Allen-KH Cheng Committed by Matthias Brugger
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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: default avatarAllen-KH Cheng <allen-kh.cheng@mediatek.com>
Reviewed-by: default avatarAngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230117032640.13504-3-allen-kh.cheng@mediatek.com


Signed-off-by: default avatarMatthias Brugger <matthias.bgg@gmail.com>
parent 1e28f6a3

drivers/soc/mediatek/mtk-pm-domains.c

+8 −0
Original line number Diff line number Diff line
@@ -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 */

drivers/soc/mediatek/mtk-pm-domains.h

+1 −0
Original line number Diff line number Diff line
@@ -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