For various revisions of a chipset if the signal pattern is changed for every revision, then the phy setting need to be updated correspondingly by measuring the signal. For getting correct signals the clock level and data de-emphasis levels needs to be adjusted. Since only these 2 values matter,we can move the same to dt, wherein we can have different dt files for every revision.
This is an initial patchset towards achieving the same for exynos 5250 and can be later extended to future chipsets.
V2: replaced moving of entire phy config structure with only required and justifiable conf registers.
V3: Incorporated Mark Rutland's comments.
V4: Rebased and included cros5250-common.dtsi.
V5: removed nr-configs feild and also the constraint of having the exact number of configs in the dt file as in the driver, the programmer can add only the pixel clock that needs to be updated.
V6: V7: removed nr-configs form the dtsi files.
V8: Fixed build error
V9: rebased and incorporated Tomasz comments.
Shirish S (4): ARM: dts: smdk5250: Add hdmi phy settings ARM: dts: arndale: Add hdmi phy settings ARM: exynos: dts: cros5250: Add hdmi phy settings drm: exynos: hdmi: Add dt support for hdmiphy settings
.../devicetree/bindings/video/exynos_hdmi.txt | 34 ++++++++ arch/arm/boot/dts/cros5250-common.dtsi | 74 ++++++++++++++++ arch/arm/boot/dts/exynos5250-arndale.dts | 74 ++++++++++++++++ arch/arm/boot/dts/exynos5250-smdk5250.dts | 74 ++++++++++++++++ drivers/gpu/drm/exynos/exynos_hdmi.c | 89 ++++++++++++++++---- 5 files changed, 327 insertions(+), 18 deletions(-)