diff options
| author | Weiyi Lu <weiyi.lu@mediatek.com> | 2020-10-30 12:36:21 +0100 |
|---|---|---|
| committer | Matthias Brugger <matthias.bgg@gmail.com> | 2020-11-27 12:04:43 +0100 |
| commit | c1f3163d8ff36f5b75d467bf95581b8f2319cd64 (patch) | |
| tree | d6d5ce879283cb9a6c3421991e894fe32c31d630 /drivers/soc/mediatek | |
| parent | eb9fa767fbe19d3db7d303e9fde7f3056221ffe1 (diff) | |
soc: mediatek: pm-domains: Add default power off flag
For some power domain, like conn on MT8192, it should be default OFF.
Because the power on/off control relies the function of connectivity chip
and its firmware. And if project choose other chip vendor solution,
those necessary connectivity functions will not provided.
Signed-off-by: Weiyi Lu <weiyi.lu@mediatek.com>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Link: https://lore.kernel.org/r/20201030113622.201188-16-enric.balletbo@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Diffstat (limited to 'drivers/soc/mediatek')
| -rw-r--r-- | drivers/soc/mediatek/mtk-pm-domains.c | 25 | ||||
| -rw-r--r-- | drivers/soc/mediatek/mtk-pm-domains.h | 1 |
2 files changed, 19 insertions, 7 deletions
diff --git a/drivers/soc/mediatek/mtk-pm-domains.c b/drivers/soc/mediatek/mtk-pm-domains.c index 8703d50cd2b7..c3b85b69f2f7 100644 --- a/drivers/soc/mediatek/mtk-pm-domains.c +++ b/drivers/soc/mediatek/mtk-pm-domains.c @@ -377,10 +377,16 @@ generic_pm_domain *scpsys_add_one_domain(struct scpsys *scpsys, struct device_no * software. The unused domains will be switched off during * late_init time. */ - ret = scpsys_power_on(&pd->genpd); - if (ret < 0) { - dev_err(scpsys->dev, "%pOF: failed to power on domain: %d\n", node, ret); - goto err_unprepare_clocks; + if (MTK_SCPD_CAPS(pd, MTK_SCPD_KEEP_DEFAULT_OFF)) { + if (scpsys_domain_is_on(pd)) + dev_warn(scpsys->dev, + "%pOF: A default off power domain has been ON\n", node); + } else { + ret = scpsys_power_on(&pd->genpd); + if (ret < 0) { + dev_err(scpsys->dev, "%pOF: failed to power on domain: %d\n", node, ret); + goto err_unprepare_clocks; + } } if (scpsys->domains[id]) { @@ -394,7 +400,11 @@ generic_pm_domain *scpsys_add_one_domain(struct scpsys *scpsys, struct device_no pd->genpd.power_off = scpsys_power_off; pd->genpd.power_on = scpsys_power_on; - pm_genpd_init(&pd->genpd, NULL, false); + if (MTK_SCPD_CAPS(pd, MTK_SCPD_KEEP_DEFAULT_OFF)) + pm_genpd_init(&pd->genpd, NULL, true); + else + pm_genpd_init(&pd->genpd, NULL, false); + scpsys->domains[id] = &pd->genpd; return scpsys->pd_data.domains[id]; @@ -467,6 +477,9 @@ static void scpsys_remove_one_domain(struct scpsys_domain *pd) { int ret; + if (scpsys_domain_is_on(pd)) + scpsys_power_off(&pd->genpd); + /* * We're in the error cleanup already, so we only complain, * but won't emit another error on top of the original one. @@ -477,8 +490,6 @@ static void scpsys_remove_one_domain(struct scpsys_domain *pd) "failed to remove domain '%s' : %d - state may be inconsistent\n", pd->genpd.name, ret); - scpsys_power_off(&pd->genpd); - clk_bulk_unprepare(pd->num_clks, pd->clks); clk_bulk_put(pd->num_clks, pd->clks); diff --git a/drivers/soc/mediatek/mtk-pm-domains.h b/drivers/soc/mediatek/mtk-pm-domains.h index 2c745f11b422..a2f4d8f97e05 100644 --- a/drivers/soc/mediatek/mtk-pm-domains.h +++ b/drivers/soc/mediatek/mtk-pm-domains.h @@ -6,6 +6,7 @@ #define MTK_SCPD_ACTIVE_WAKEUP BIT(0) #define MTK_SCPD_FWAIT_SRAM BIT(1) #define MTK_SCPD_SRAM_ISO BIT(2) +#define MTK_SCPD_KEEP_DEFAULT_OFF BIT(3) #define MTK_SCPD_CAPS(_scpd, _x) ((_scpd)->data->caps & (_x)) #define SPM_VDE_PWR_CON 0x0210 |