Re: [PATCH 3/4] host1x: mipi: Include clock lanes in mipi calibrate
From: Thierry Reding <hidden>
Date: 2014-08-07 08:34:30
Also in:
linux-tegra
Possibly related (same subject, not in this thread)
- 2014-08-25 · Re: [PATCH 3/4] host1x: mipi: Include clock lanes in mipi calibrate · Thierry Reding <hidden>
- 2014-08-07 · Re: [PATCH 3/4] host1x: mipi: Include clock lanes in mipi calibrate · Sean Paul <hidden>
- 2014-08-07 · [PATCH 3/4] host1x: mipi: Include clock lanes in mipi calibrate · Sean Paul <hidden>
On Thu, Aug 07, 2014 at 02:11:46AM -0400, Sean Paul wrote:
quoted hunk
When calibrating the mipi phy, also include the clock lanes in the calibration. Signed-off-by: Sean Paul <redacted> --- drivers/gpu/host1x/mipi.c | 70 +++++++++++++++++++++++++++++++++++++---------- 1 file changed, 56 insertions(+), 14 deletions(-)diff --git a/drivers/gpu/host1x/mipi.c b/drivers/gpu/host1x/mipi.c index 0af2892..80578dc 100644 --- a/drivers/gpu/host1x/mipi.c +++ b/drivers/gpu/host1x/mipi.c@@ -49,10 +49,18 @@ #define MIPI_CAL_CONFIG_DSIC 0x10 #define MIPI_CAL_CONFIG_DSID 0x11 +#define MIPI_CAL_CONFIG_DSIAB_CLK 0x19 +#define MIPI_CAL_CONFIG_DSICD_CLK 0x1a +#define MIPI_CAL_CONFIG_CSIAB_CLK 0x1b +#define MIPI_CAL_CONFIG_CSICD_CLK 0x1c +#define MIPI_CAL_CONFIG_CSIE_CLK 0x1d +
These registers don't seem to exist on Tegra114 and earlier. It also seems like MIPI_CAL_CONFIG_DSIC and MIPI_CAL_CONFIG_DSID no longer exist on Tegra124 and later. And CSIC and CSID seem to be shared with DSIB (channel A and B) now. So I think we'll need something more elaborate than this. It should be differentiating between SoC revisions to allow checking for valid pad selection when calibrating. I'll see if I can find out what's up with the change between Tegra114 and Tegra124 regarding the DSIC and DSID pads. It looks to me like they were merged to match the DSIA and DSIB controllers, whereas before DSIA and DSIB were used for controller DSIA and DSIC and DSID were used for controller DSIB. Thierry
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