| Message ID | 20220106235540.1567839-1-bryan.odonoghue@linaro.org |
|---|---|
| Headers | show |
| Series | camss: Fixup multiple VDDA regulator support | expand |
On Thu 06 Jan 15:55 PST 2022, Bryan O'Donoghue wrote: > Add the ability to enable or disable multiple regulators in bulk with > camss. This is useful for sm8250, sdm845 and it looks like sdm660 where we > have more than one CSI regulator to do at once. > > It should just work for standalone existing vdda regulators and parts which > don't have an explicitly defined CSI regulator. > > Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> > Reported-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org> > --- > .../media/platform/qcom/camss/camss-csid.c | 40 +++++--- > .../media/platform/qcom/camss/camss-csid.h | 3 +- > drivers/media/platform/qcom/camss/camss.c | 94 +++++++++---------- > drivers/media/platform/qcom/camss/camss.h | 2 +- > 4 files changed, 75 insertions(+), 64 deletions(-) > > diff --git a/drivers/media/platform/qcom/camss/camss-csid.c b/drivers/media/platform/qcom/camss/camss-csid.c > index 32f82e471bae1..786a18bd9571c 100644 > --- a/drivers/media/platform/qcom/camss/camss-csid.c > +++ b/drivers/media/platform/qcom/camss/camss-csid.c > @@ -173,7 +173,8 @@ static int csid_set_power(struct v4l2_subdev *sd, int on) > if (ret < 0) > return ret; > > - ret = csid->vdda ? regulator_enable(csid->vdda) : 0; > + ret = regulator_bulk_enable(csid->num_supplies, > + csid->supplies); > if (ret < 0) { > pm_runtime_put_sync(dev); > return ret; > @@ -181,16 +182,16 @@ static int csid_set_power(struct v4l2_subdev *sd, int on) > > ret = csid_set_clock_rates(csid); > if (ret < 0) { > - if (csid->vdda) > - regulator_disable(csid->vdda); > + regulator_bulk_disable(csid->num_supplies, > + csid->supplies); > pm_runtime_put_sync(dev); > return ret; > } > > ret = camss_enable_clocks(csid->nclocks, csid->clock, dev); > if (ret < 0) { > - if (csid->vdda) > - regulator_disable(csid->vdda); > + regulator_bulk_disable(csid->num_supplies, > + csid->supplies); > pm_runtime_put_sync(dev); > return ret; > } > @@ -201,8 +202,8 @@ static int csid_set_power(struct v4l2_subdev *sd, int on) > if (ret < 0) { > disable_irq(csid->irq); > camss_disable_clocks(csid->nclocks, csid->clock); > - if (csid->vdda) > - regulator_disable(csid->vdda); > + regulator_bulk_disable(csid->num_supplies, > + csid->supplies); > pm_runtime_put_sync(dev); > return ret; > } > @@ -211,7 +212,8 @@ static int csid_set_power(struct v4l2_subdev *sd, int on) > } else { > disable_irq(csid->irq); > camss_disable_clocks(csid->nclocks, csid->clock); > - ret = csid->vdda ? regulator_disable(csid->vdda) : 0; > + regulator_bulk_disable(csid->num_supplies, > + csid->supplies); > pm_runtime_put_sync(dev); > if (version == CAMSS_8250 || version == CAMSS_845) > vfe_put(vfe); > @@ -660,14 +662,22 @@ int msm_csid_subdev_init(struct camss *camss, struct csid_device *csid, > } > > /* Regulator */ > - > - csid->vdda = NULL; > - if (res->regulator[0]) > - csid->vdda = devm_regulator_get(dev, res->regulator[0]); > - if (IS_ERR(csid->vdda)) { > - dev_err(dev, "could not get regulator\n"); > - return PTR_ERR(csid->vdda); > + for (i = 0; i < ARRAY_SIZE(res->regulators); i++) { > + if (res->regulators[i]) > + csid->num_supplies++; > } > + csid->supplies = devm_kmalloc_array(camss->dev, csid->num_supplies, > + sizeof(csid->supplies), GFP_KERNEL); When res->regulators is empty num_supplies will be 0 and you will get ZERO_SIZE_PTR back here, so this works just fine - but I had to read the code to learn what kzalloc(0) returns. Perhaps it would be nice to be explicit and make the allocation conditional on num_supplies? And leave csid->supplies NULL when this happens? > + if (!csid->supplies) > + return -ENOMEM; > + > + for (i = 0; i < csid->num_supplies; i++) > + csid->supplies[i].supply = res->regulators[i]; > + > + ret = devm_regulator_bulk_get(camss->dev, csid->num_supplies, > + csid->supplies); > + if (ret) > + return ret; > > init_completion(&csid->reset_complete); > > diff --git a/drivers/media/platform/qcom/camss/camss-csid.h b/drivers/media/platform/qcom/camss/camss-csid.h > index 17a50fa426be1..f06040e44c515 100644 > --- a/drivers/media/platform/qcom/camss/camss-csid.h > +++ b/drivers/media/platform/qcom/camss/camss-csid.h > @@ -152,7 +152,8 @@ struct csid_device { > char irq_name[30]; > struct camss_clock *clock; > int nclocks; > - struct regulator *vdda; > + struct regulator_bulk_data *supplies; > + int num_supplies; > struct completion reset_complete; > struct csid_testgen_config testgen; > struct csid_phy_config phy; > diff --git a/drivers/media/platform/qcom/camss/camss.c b/drivers/media/platform/qcom/camss/camss.c > index d9905e737d88d..419c48c4f1d52 100644 > --- a/drivers/media/platform/qcom/camss/camss.c > +++ b/drivers/media/platform/qcom/camss/camss.c > @@ -34,7 +34,7 @@ > static const struct resources csiphy_res_8x16[] = { > /* CSIPHY0 */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, To me this indicates that regulators is an array of 1 element and we set it to NULL, which based on how above is written must have been the case at some point. But I would have preferred this was written as: .regulators = {}, Perhaps the maintainer can chime in with a verdict if this would be okay to do as part of this change? Regards, Bjorn > .clock = { "top_ahb", "ispif_ahb", "ahb", "csiphy0_timer" }, > .clock_rate = { { 0 }, > { 0 }, > @@ -46,7 +46,7 @@ static const struct resources csiphy_res_8x16[] = { > > /* CSIPHY1 */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "top_ahb", "ispif_ahb", "ahb", "csiphy1_timer" }, > .clock_rate = { { 0 }, > { 0 }, > @@ -60,7 +60,7 @@ static const struct resources csiphy_res_8x16[] = { > static const struct resources csid_res_8x16[] = { > /* CSID0 */ > { > - .regulator = { "vdda" }, > + .regulators = { "vdda" }, > .clock = { "top_ahb", "ispif_ahb", "csi0_ahb", "ahb", > "csi0", "csi0_phy", "csi0_pix", "csi0_rdi" }, > .clock_rate = { { 0 }, > @@ -77,7 +77,7 @@ static const struct resources csid_res_8x16[] = { > > /* CSID1 */ > { > - .regulator = { "vdda" }, > + .regulators = { "vdda" }, > .clock = { "top_ahb", "ispif_ahb", "csi1_ahb", "ahb", > "csi1", "csi1_phy", "csi1_pix", "csi1_rdi" }, > .clock_rate = { { 0 }, > @@ -107,7 +107,7 @@ static const struct resources_ispif ispif_res_8x16 = { > static const struct resources vfe_res_8x16[] = { > /* VFE0 */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "top_ahb", "vfe0", "csi_vfe0", > "vfe_ahb", "vfe_axi", "ahb" }, > .clock_rate = { { 0 }, > @@ -129,7 +129,7 @@ static const struct resources vfe_res_8x16[] = { > static const struct resources csiphy_res_8x96[] = { > /* CSIPHY0 */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "top_ahb", "ispif_ahb", "ahb", "csiphy0_timer" }, > .clock_rate = { { 0 }, > { 0 }, > @@ -141,7 +141,7 @@ static const struct resources csiphy_res_8x96[] = { > > /* CSIPHY1 */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "top_ahb", "ispif_ahb", "ahb", "csiphy1_timer" }, > .clock_rate = { { 0 }, > { 0 }, > @@ -153,7 +153,7 @@ static const struct resources csiphy_res_8x96[] = { > > /* CSIPHY2 */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "top_ahb", "ispif_ahb", "ahb", "csiphy2_timer" }, > .clock_rate = { { 0 }, > { 0 }, > @@ -167,7 +167,7 @@ static const struct resources csiphy_res_8x96[] = { > static const struct resources csid_res_8x96[] = { > /* CSID0 */ > { > - .regulator = { "vdda" }, > + .regulators = { "vdda" }, > .clock = { "top_ahb", "ispif_ahb", "csi0_ahb", "ahb", > "csi0", "csi0_phy", "csi0_pix", "csi0_rdi" }, > .clock_rate = { { 0 }, > @@ -184,7 +184,7 @@ static const struct resources csid_res_8x96[] = { > > /* CSID1 */ > { > - .regulator = { "vdda" }, > + .regulators = { "vdda" }, > .clock = { "top_ahb", "ispif_ahb", "csi1_ahb", "ahb", > "csi1", "csi1_phy", "csi1_pix", "csi1_rdi" }, > .clock_rate = { { 0 }, > @@ -201,7 +201,7 @@ static const struct resources csid_res_8x96[] = { > > /* CSID2 */ > { > - .regulator = { "vdda" }, > + .regulators = { "vdda" }, > .clock = { "top_ahb", "ispif_ahb", "csi2_ahb", "ahb", > "csi2", "csi2_phy", "csi2_pix", "csi2_rdi" }, > .clock_rate = { { 0 }, > @@ -218,7 +218,7 @@ static const struct resources csid_res_8x96[] = { > > /* CSID3 */ > { > - .regulator = { "vdda" }, > + .regulators = { "vdda" }, > .clock = { "top_ahb", "ispif_ahb", "csi3_ahb", "ahb", > "csi3", "csi3_phy", "csi3_pix", "csi3_rdi" }, > .clock_rate = { { 0 }, > @@ -249,7 +249,7 @@ static const struct resources_ispif ispif_res_8x96 = { > static const struct resources vfe_res_8x96[] = { > /* VFE0 */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "top_ahb", "ahb", "vfe0", "csi_vfe0", "vfe_ahb", > "vfe0_ahb", "vfe_axi", "vfe0_stream"}, > .clock_rate = { { 0 }, > @@ -267,7 +267,7 @@ static const struct resources vfe_res_8x96[] = { > > /* VFE1 */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "top_ahb", "ahb", "vfe1", "csi_vfe1", "vfe_ahb", > "vfe1_ahb", "vfe_axi", "vfe1_stream"}, > .clock_rate = { { 0 }, > @@ -287,7 +287,7 @@ static const struct resources vfe_res_8x96[] = { > static const struct resources csiphy_res_660[] = { > /* CSIPHY0 */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "top_ahb", "ispif_ahb", "ahb", "csiphy0_timer", > "csi0_phy", "csiphy_ahb2crif" }, > .clock_rate = { { 0 }, > @@ -301,7 +301,7 @@ static const struct resources csiphy_res_660[] = { > > /* CSIPHY1 */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "top_ahb", "ispif_ahb", "ahb", "csiphy1_timer", > "csi1_phy", "csiphy_ahb2crif" }, > .clock_rate = { { 0 }, > @@ -315,7 +315,7 @@ static const struct resources csiphy_res_660[] = { > > /* CSIPHY2 */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "top_ahb", "ispif_ahb", "ahb", "csiphy2_timer", > "csi2_phy", "csiphy_ahb2crif" }, > .clock_rate = { { 0 }, > @@ -331,7 +331,7 @@ static const struct resources csiphy_res_660[] = { > static const struct resources csid_res_660[] = { > /* CSID0 */ > { > - .regulator = { "vdda", "vdd_sec" }, > + .regulators = { "vdda", "vdd_sec" }, > .clock = { "top_ahb", "ispif_ahb", "csi0_ahb", "ahb", > "csi0", "csi0_phy", "csi0_pix", "csi0_rdi", > "cphy_csid0" }, > @@ -351,7 +351,7 @@ static const struct resources csid_res_660[] = { > > /* CSID1 */ > { > - .regulator = { "vdda", "vdd_sec" }, > + .regulators = { "vdda", "vdd_sec" }, > .clock = { "top_ahb", "ispif_ahb", "csi1_ahb", "ahb", > "csi1", "csi1_phy", "csi1_pix", "csi1_rdi", > "cphy_csid1" }, > @@ -371,7 +371,7 @@ static const struct resources csid_res_660[] = { > > /* CSID2 */ > { > - .regulator = { "vdda", "vdd_sec" }, > + .regulators = { "vdda", "vdd_sec" }, > .clock = { "top_ahb", "ispif_ahb", "csi2_ahb", "ahb", > "csi2", "csi2_phy", "csi2_pix", "csi2_rdi", > "cphy_csid2" }, > @@ -391,7 +391,7 @@ static const struct resources csid_res_660[] = { > > /* CSID3 */ > { > - .regulator = { "vdda", "vdd_sec" }, > + .regulators = { "vdda", "vdd_sec" }, > .clock = { "top_ahb", "ispif_ahb", "csi3_ahb", "ahb", > "csi3", "csi3_phy", "csi3_pix", "csi3_rdi", > "cphy_csid3" }, > @@ -425,7 +425,7 @@ static const struct resources_ispif ispif_res_660 = { > static const struct resources vfe_res_660[] = { > /* VFE0 */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "throttle_axi", "top_ahb", "ahb", "vfe0", > "csi_vfe0", "vfe_ahb", "vfe0_ahb", "vfe_axi", > "vfe0_stream"}, > @@ -446,7 +446,7 @@ static const struct resources vfe_res_660[] = { > > /* VFE1 */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "throttle_axi", "top_ahb", "ahb", "vfe1", > "csi_vfe1", "vfe_ahb", "vfe1_ahb", "vfe_axi", > "vfe1_stream"}, > @@ -469,7 +469,7 @@ static const struct resources vfe_res_660[] = { > static const struct resources csiphy_res_845[] = { > /* CSIPHY0 */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "camnoc_axi", "soc_ahb", "slow_ahb_src", > "cpas_ahb", "cphy_rx_src", "csiphy0", > "csiphy0_timer_src", "csiphy0_timer" }, > @@ -487,7 +487,7 @@ static const struct resources csiphy_res_845[] = { > > /* CSIPHY1 */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "camnoc_axi", "soc_ahb", "slow_ahb_src", > "cpas_ahb", "cphy_rx_src", "csiphy1", > "csiphy1_timer_src", "csiphy1_timer" }, > @@ -505,7 +505,7 @@ static const struct resources csiphy_res_845[] = { > > /* CSIPHY2 */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "camnoc_axi", "soc_ahb", "slow_ahb_src", > "cpas_ahb", "cphy_rx_src", "csiphy2", > "csiphy2_timer_src", "csiphy2_timer" }, > @@ -523,7 +523,7 @@ static const struct resources csiphy_res_845[] = { > > /* CSIPHY3 */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "camnoc_axi", "soc_ahb", "slow_ahb_src", > "cpas_ahb", "cphy_rx_src", "csiphy3", > "csiphy3_timer_src", "csiphy3_timer" }, > @@ -543,7 +543,7 @@ static const struct resources csiphy_res_845[] = { > static const struct resources csid_res_845[] = { > /* CSID0 */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "cpas_ahb", "cphy_rx_src", "slow_ahb_src", > "soc_ahb", "vfe0", "vfe0_src", > "vfe0_cphy_rx", "csi0", > @@ -563,7 +563,7 @@ static const struct resources csid_res_845[] = { > > /* CSID1 */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "cpas_ahb", "cphy_rx_src", "slow_ahb_src", > "soc_ahb", "vfe1", "vfe1_src", > "vfe1_cphy_rx", "csi1", > @@ -583,7 +583,7 @@ static const struct resources csid_res_845[] = { > > /* CSID2 */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "cpas_ahb", "cphy_rx_src", "slow_ahb_src", > "soc_ahb", "vfe_lite", "vfe_lite_src", > "vfe_lite_cphy_rx", "csi2", > @@ -605,7 +605,7 @@ static const struct resources csid_res_845[] = { > static const struct resources vfe_res_845[] = { > /* VFE0 */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "camnoc_axi", "cpas_ahb", "slow_ahb_src", > "soc_ahb", "vfe0", "vfe0_axi", > "vfe0_src", "csi0", > @@ -625,7 +625,7 @@ static const struct resources vfe_res_845[] = { > > /* VFE1 */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "camnoc_axi", "cpas_ahb", "slow_ahb_src", > "soc_ahb", "vfe1", "vfe1_axi", > "vfe1_src", "csi1", > @@ -645,7 +645,7 @@ static const struct resources vfe_res_845[] = { > > /* VFE-lite */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "camnoc_axi", "cpas_ahb", "slow_ahb_src", > "soc_ahb", "vfe_lite", > "vfe_lite_src", "csi2", > @@ -666,7 +666,7 @@ static const struct resources vfe_res_845[] = { > static const struct resources csiphy_res_8250[] = { > /* CSIPHY0 */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "csiphy0", "csiphy0_timer" }, > .clock_rate = { { 400000000 }, > { 300000000 } }, > @@ -675,7 +675,7 @@ static const struct resources csiphy_res_8250[] = { > }, > /* CSIPHY1 */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "csiphy1", "csiphy1_timer" }, > .clock_rate = { { 400000000 }, > { 300000000 } }, > @@ -684,7 +684,7 @@ static const struct resources csiphy_res_8250[] = { > }, > /* CSIPHY2 */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "csiphy2", "csiphy2_timer" }, > .clock_rate = { { 400000000 }, > { 300000000 } }, > @@ -693,7 +693,7 @@ static const struct resources csiphy_res_8250[] = { > }, > /* CSIPHY3 */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "csiphy3", "csiphy3_timer" }, > .clock_rate = { { 400000000 }, > { 300000000 } }, > @@ -702,7 +702,7 @@ static const struct resources csiphy_res_8250[] = { > }, > /* CSIPHY4 */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "csiphy4", "csiphy4_timer" }, > .clock_rate = { { 400000000 }, > { 300000000 } }, > @@ -711,7 +711,7 @@ static const struct resources csiphy_res_8250[] = { > }, > /* CSIPHY5 */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "csiphy5", "csiphy5_timer" }, > .clock_rate = { { 400000000 }, > { 300000000 } }, > @@ -723,7 +723,7 @@ static const struct resources csiphy_res_8250[] = { > static const struct resources csid_res_8250[] = { > /* CSID0 */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "vfe0_csid", "vfe0_cphy_rx", "vfe0", "vfe0_areg", "vfe0_ahb" }, > .clock_rate = { { 400000000 }, > { 400000000 }, > @@ -735,7 +735,7 @@ static const struct resources csid_res_8250[] = { > }, > /* CSID1 */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "vfe1_csid", "vfe1_cphy_rx", "vfe1", "vfe1_areg", "vfe1_ahb" }, > .clock_rate = { { 400000000 }, > { 400000000 }, > @@ -747,7 +747,7 @@ static const struct resources csid_res_8250[] = { > }, > /* CSID2 */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "vfe_lite_csid", "vfe_lite_cphy_rx", "vfe_lite", "vfe_lite_ahb" }, > .clock_rate = { { 400000000 }, > { 400000000 }, > @@ -758,7 +758,7 @@ static const struct resources csid_res_8250[] = { > }, > /* CSID3 */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "vfe_lite_csid", "vfe_lite_cphy_rx", "vfe_lite", "vfe_lite_ahb" }, > .clock_rate = { { 400000000 }, > { 400000000 }, > @@ -772,7 +772,7 @@ static const struct resources csid_res_8250[] = { > static const struct resources vfe_res_8250[] = { > /* VFE0 */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "camnoc_axi_src", "slow_ahb_src", "cpas_ahb", > "camnoc_axi", "vfe0_ahb", "vfe0_areg", "vfe0", > "vfe0_axi", "cam_hf_axi" }, > @@ -790,7 +790,7 @@ static const struct resources vfe_res_8250[] = { > }, > /* VFE1 */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "camnoc_axi_src", "slow_ahb_src", "cpas_ahb", > "camnoc_axi", "vfe1_ahb", "vfe1_areg", "vfe1", > "vfe1_axi", "cam_hf_axi" }, > @@ -808,7 +808,7 @@ static const struct resources vfe_res_8250[] = { > }, > /* VFE2 (lite) */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "camnoc_axi_src", "slow_ahb_src", "cpas_ahb", > "camnoc_axi", "vfe_lite_ahb", "vfe_lite_axi", > "vfe_lite", "cam_hf_axi" }, > @@ -825,7 +825,7 @@ static const struct resources vfe_res_8250[] = { > }, > /* VFE3 (lite) */ > { > - .regulator = { NULL }, > + .regulators = { NULL }, > .clock = { "camnoc_axi_src", "slow_ahb_src", "cpas_ahb", > "camnoc_axi", "vfe_lite_ahb", "vfe_lite_axi", > "vfe_lite", "cam_hf_axi" }, > diff --git a/drivers/media/platform/qcom/camss/camss.h b/drivers/media/platform/qcom/camss/camss.h > index 9c644e638a948..c9b3e0df5be8f 100644 > --- a/drivers/media/platform/qcom/camss/camss.h > +++ b/drivers/media/platform/qcom/camss/camss.h > @@ -42,7 +42,7 @@ > #define CAMSS_RES_MAX 17 > > struct resources { > - char *regulator[CAMSS_RES_MAX]; > + char *regulators[CAMSS_RES_MAX]; > char *clock[CAMSS_RES_MAX]; > u32 clock_rate[CAMSS_RES_MAX][CAMSS_RES_MAX]; > char *reg[CAMSS_RES_MAX]; > -- > 2.33.0 >
Following on from comments from Vladimir on the sm8250 CAMSS patches I had a look through the RB3 and RB5 schematics. Here we see the CSI PHY connects to the same VDDA power-rails as USB, PCIe, UFS and the DSI PHYs. Right now CAMSS works on SDM845 and SM8250 because one of the USB, PCIe, or UFS has enabled the relevant VDDA supplies, prior to the CAMSS driver running. The solution is to - Fix the describing YAML - Add in regulator_bulk_enable()/regulator_bulk_disable() - Update the DTS to point at the necessary regulators I have an SDM660 board on-order so when it arrives I can also look into the vdda_sec regulator if nobody else has. For now this series addresses the fundamental gap in the CSI PHY power rails and remediates the situation for the two boards I have schematics for and can test, RB3/SDM845 and RB5/SM8250. This patch applies on top of git.linuxtv.org/hverkuil/media_tree.git / br-v5.17j Bootable and testable tree for both RB3 and RB5 here: git.linaro.org/people/bryan.odonoghue/kernel.git / br-v5.17j+camss-fixes Bryan O'Donoghue (7): media: dt-bindings: media: camss: Fixup vdda regulator descriptions sdm845 media: dt-bindings: media: camss: Add vdda supply declarations sm8250 arm64: dts: qcom: sdm845: Rename camss vdda-supply to vdda-phy-supply arm64: dts: qcom: sdm845: Add camss vdda-pll-supply media: camss: Add regulator_bulk support media: camss: Point sdm845 at the correct vdda regulators media: camss: Point sm8250 at the correct vdda regulators .../bindings/media/qcom,sdm845-camss.yaml | 14 ++- .../bindings/media/qcom,sm8250-camss.yaml | 13 +++ arch/arm64/boot/dts/qcom/sdm845-db845c.dts | 3 +- .../media/platform/qcom/camss/camss-csid.c | 40 +++++--- .../media/platform/qcom/camss/camss-csid.h | 3 +- drivers/media/platform/qcom/camss/camss.c | 94 +++++++++---------- drivers/media/platform/qcom/camss/camss.h | 2 +- 7 files changed, 100 insertions(+), 69 deletions(-)