[PATCH v4 14/34] drm/exynos: hdmi: remove the i2c drivers and use devtree

Tomasz Stanislawski t.stanislaws at samsung.com
Fri Feb 14 06:13:24 PST 2014


Hi Daniel,
I think that it would be better to change the semantic of phy and ddc
bindings.

Rather than pointing to I2C client it should point to I2C bus instead.
The exynos DRM driver can create dummy I2C clients using i2c_new_dummy()
function.

There is quite strong rationale for this:
- DDC is always accessible on fixed addresses described in HDMI specification.
- HDMIPHY (including I2C address) is a part of HDMI IP and it is bound to
  specific version of Exynos SoC
- no need to add virtual nodes in DTS
- NVIDIA already use bindings to DDC bus instead of DDC client. Take a look to
  arch/arm/boot/dts/tegra*.dts

Regards,
Tomasz Stanislawski




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