| Message ID | 20210312132459.1754782-1-niklas.soderlund+renesas@ragnatech.se (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | media: rcar-csi2: Enable support for r8a77961 | expand |
Hello, On 2021-03-12 14:24:59 +0100, Niklas Söderlund wrote: > Enable support for M3-W+ (r8a77961). > > Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> I have off-band received a tag for this patch, Tested-by: LUU HOAI <hoai.luu.ub@renesas.com> > --- > drivers/media/platform/rcar-vin/rcar-csi2.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/drivers/media/platform/rcar-vin/rcar-csi2.c b/drivers/media/platform/rcar-vin/rcar-csi2.c > index e06cd512aba207a4..71ff20a165d66547 100644 > --- a/drivers/media/platform/rcar-vin/rcar-csi2.c > +++ b/drivers/media/platform/rcar-vin/rcar-csi2.c > @@ -1164,6 +1164,10 @@ static const struct of_device_id rcar_csi2_of_table[] = { > .compatible = "renesas,r8a7796-csi2", > .data = &rcar_csi2_info_r8a7796, > }, > + { > + .compatible = "renesas,r8a77961-csi2", > + .data = &rcar_csi2_info_r8a7796, > + }, > { > .compatible = "renesas,r8a77965-csi2", > .data = &rcar_csi2_info_r8a77965, > -- > 2.30.1 >
Hi Niklas, On Fri, Mar 12, 2021 at 2:26 PM Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> wrote: > Enable support for M3-W+ (r8a77961). > > Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Thanks for your patch! > --- a/drivers/media/platform/rcar-vin/rcar-csi2.c > +++ b/drivers/media/platform/rcar-vin/rcar-csi2.c > @@ -1164,6 +1164,10 @@ static const struct of_device_id rcar_csi2_of_table[] = { > .compatible = "renesas,r8a7796-csi2", > .data = &rcar_csi2_info_r8a7796, > }, > + { > + .compatible = "renesas,r8a77961-csi2", > + .data = &rcar_csi2_info_r8a7796, Hence CSI2 on R-Car M3-W+ is handled the same way as R-Car M3-W. I don't know what this means for the driver, but according to Technical Update TN-RCT-S0359A/E, R-Car M3-W+ supports lane settings 4/2/1 on CSI40/41 (like most other R-Car Gen3 SoCs), while R-Car M3-W supports only lane setting 4 on CSI40/41. Gr{oetje,eeting}s, Geert
Hi Geert, Thanks for your feedback. On 2021-03-23 15:53:27 +0100, Geert Uytterhoeven wrote: > Hi Niklas, > > On Fri, Mar 12, 2021 at 2:26 PM Niklas Söderlund > <niklas.soderlund+renesas@ragnatech.se> wrote: > > Enable support for M3-W+ (r8a77961). > > > > Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> > > Thanks for your patch! > > > --- a/drivers/media/platform/rcar-vin/rcar-csi2.c > > +++ b/drivers/media/platform/rcar-vin/rcar-csi2.c > > @@ -1164,6 +1164,10 @@ static const struct of_device_id rcar_csi2_of_table[] = { > > .compatible = "renesas,r8a7796-csi2", > > .data = &rcar_csi2_info_r8a7796, > > }, > > + { > > + .compatible = "renesas,r8a77961-csi2", > > + .data = &rcar_csi2_info_r8a7796, > > Hence CSI2 on R-Car M3-W+ is handled the same way as R-Car M3-W. > I don't know what this means for the driver, but according to Technical > Update TN-RCT-S0359A/E, R-Car M3-W+ supports lane settings 4/2/1 on > CSI40/41 (like most other R-Car Gen3 SoCs), while R-Car M3-W supports > only lane setting 4 on CSI40/41. This is a great find. The table TN-RCT-S0359A/E correct was not present in datasheets before v0.80 so it have completely been missed. The trouble is that the current driver does the wrong thing for M3-W (and allows 4/2/1 lanes) and this this patch would be correct for M3-W+ while still leaving M3-W incorrect. I will resping this series to first correct the M3-W behavior and then add M3-W on-top. > > Gr{oetje,eeting}s, > > Geert > > -- > Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org > > In personal conversations with technical people, I call myself a hacker. But > when I'm talking to journalists I just say "programmer" or something like that. > -- Linus Torvalds
diff --git a/drivers/media/platform/rcar-vin/rcar-csi2.c b/drivers/media/platform/rcar-vin/rcar-csi2.c index e06cd512aba207a4..71ff20a165d66547 100644 --- a/drivers/media/platform/rcar-vin/rcar-csi2.c +++ b/drivers/media/platform/rcar-vin/rcar-csi2.c @@ -1164,6 +1164,10 @@ static const struct of_device_id rcar_csi2_of_table[] = { .compatible = "renesas,r8a7796-csi2", .data = &rcar_csi2_info_r8a7796, }, + { + .compatible = "renesas,r8a77961-csi2", + .data = &rcar_csi2_info_r8a7796, + }, { .compatible = "renesas,r8a77965-csi2", .data = &rcar_csi2_info_r8a77965,
Enable support for M3-W+ (r8a77961). Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> --- drivers/media/platform/rcar-vin/rcar-csi2.c | 4 ++++ 1 file changed, 4 insertions(+)