diff options
| author | AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> | 2025-08-05 09:47:43 +0200 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2025-08-19 14:12:40 +0200 |
| commit | 16d861d2bce8b1d28b6d94ffbfcdaa9cf833542b (patch) | |
| tree | ea9fea0cd44c5035b53084c0dfb4ddca2d2025ad | |
| parent | pmdomain: mediatek: Move ctl sequences out of power_on/off functions (diff) | |
| download | linux-16d861d2bce8b1d28b6d94ffbfcdaa9cf833542b.tar.gz linux-16d861d2bce8b1d28b6d94ffbfcdaa9cf833542b.zip | |
pmdomain: mediatek: Add support for modem power sequences
Add support for the modem power domains by adding its specific
power sequence in functions scpsys_modem_pwrseq_{on,off}() and
call them if the flag MTK_SCPD_MODEM_PWRSEQ is present.
While at it, since some SoC models need to skip setting/clearing
the PWR_RST_B_BIT, also add a MTK_SCPD_SKIP_RESET_B flag for that.
Reviewed-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20250805074746.29457-8-angelogioacchino.delregno@collabora.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
| -rw-r--r-- | drivers/pmdomain/mediatek/mtk-pm-domains.c | 41 | ||||
| -rw-r--r-- | drivers/pmdomain/mediatek/mtk-pm-domains.h | 2 |
2 files changed, 41 insertions, 2 deletions
diff --git a/drivers/pmdomain/mediatek/mtk-pm-domains.c b/drivers/pmdomain/mediatek/mtk-pm-domains.c index d84f0e7cde12..cf749ba5c3c7 100644 --- a/drivers/pmdomain/mediatek/mtk-pm-domains.c +++ b/drivers/pmdomain/mediatek/mtk-pm-domains.c @@ -279,6 +279,36 @@ static void scpsys_ctl_pwrseq_off(struct scpsys_domain *pd) regmap_clear_bits(scpsys->base, pd->data->ctl_offs, PWR_ON_BIT); } +static int scpsys_modem_pwrseq_on(struct scpsys_domain *pd) +{ + struct scpsys *scpsys = pd->scpsys; + bool tmp; + int ret; + + if (!MTK_SCPD_CAPS(pd, MTK_SCPD_SKIP_RESET_B)) + regmap_set_bits(scpsys->base, pd->data->ctl_offs, PWR_RST_B_BIT); + + regmap_set_bits(scpsys->base, pd->data->ctl_offs, PWR_ON_BIT); + + /* wait until PWR_ACK = 1 */ + ret = readx_poll_timeout(scpsys_domain_is_on, pd, tmp, tmp, MTK_POLL_DELAY_US, + MTK_POLL_TIMEOUT); + if (ret < 0) + return ret; + + return 0; +} + +static void scpsys_modem_pwrseq_off(struct scpsys_domain *pd) +{ + struct scpsys *scpsys = pd->scpsys; + + regmap_clear_bits(scpsys->base, pd->data->ctl_offs, PWR_ON_BIT); + + if (!MTK_SCPD_CAPS(pd, MTK_SCPD_SKIP_RESET_B)) + regmap_clear_bits(scpsys->base, pd->data->ctl_offs, PWR_RST_B_BIT); +} + static int scpsys_power_on(struct generic_pm_domain *genpd) { struct scpsys_domain *pd = container_of(genpd, struct scpsys_domain, genpd); @@ -297,7 +327,11 @@ static int scpsys_power_on(struct generic_pm_domain *genpd) regmap_clear_bits(scpsys->base, pd->data->ext_buck_iso_offs, pd->data->ext_buck_iso_mask); - ret = scpsys_ctl_pwrseq_on(pd); + if (MTK_SCPD_CAPS(pd, MTK_SCPD_MODEM_PWRSEQ)) + ret = scpsys_modem_pwrseq_on(pd); + else + ret = scpsys_ctl_pwrseq_on(pd); + if (ret) goto err_pwr_ack; @@ -366,7 +400,10 @@ static int scpsys_power_off(struct generic_pm_domain *genpd) clk_bulk_disable_unprepare(pd->num_subsys_clks, pd->subsys_clks); - scpsys_ctl_pwrseq_off(pd); + if (MTK_SCPD_CAPS(pd, MTK_SCPD_MODEM_PWRSEQ)) + scpsys_modem_pwrseq_off(pd); + else + scpsys_ctl_pwrseq_off(pd); /* wait until PWR_ACK = 0 */ ret = readx_poll_timeout(scpsys_domain_is_on, pd, tmp, !tmp, MTK_POLL_DELAY_US, diff --git a/drivers/pmdomain/mediatek/mtk-pm-domains.h b/drivers/pmdomain/mediatek/mtk-pm-domains.h index fbbfb23a8739..931a54f1c5ca 100644 --- a/drivers/pmdomain/mediatek/mtk-pm-domains.h +++ b/drivers/pmdomain/mediatek/mtk-pm-domains.h @@ -14,6 +14,8 @@ #define MTK_SCPD_HAS_INFRA_NAO BIT(7) #define MTK_SCPD_STRICT_BUS_PROTECTION BIT(8) #define MTK_SCPD_SRAM_PDN_INVERTED BIT(9) +#define MTK_SCPD_MODEM_PWRSEQ BIT(10) +#define MTK_SCPD_SKIP_RESET_B BIT(11) #define MTK_SCPD_CAPS(_scpd, _x) ((_scpd)->data->caps & (_x)) #define SPM_VDE_PWR_CON 0x0210 |