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To set dw hdmi i2c bus adapter scl clock rate, we introduce two device
tree parameter, ddc-i2c-scl-high-time-ns and ddc-i2c-scl-low-time-ns.
ddc-i2c-scl-high-time-ns: how many ns SCL hold high
ddc-i2c-scl-low-time-ns: how many ns SCL hold low
After measurement, 50KHz scl clock rate recommended configuration is:
&hdmi {
ddc-i2c-scl-high-time-ns = <9625>;
ddc-i2c-scl-low-time-ns = <10000>;
};
100KHz recommended configuration is:
&hdmi {
ddc-i2c-scl-high-time-ns = <4708>;
ddc-i2c-scl-low-time-ns = <4916>;
};
If dts parameter is not available, the default scl rate is 100KHz.
Change-Id: I6f6b0bf1694ab59e70da789ead99e15a53c93e4d
Signed-off-by: Zheng Yang <zhengyang@rock-chips.com>
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| drm | ||
| host1x | ||
| ipu-v3 | ||
| rogue | ||
| rogue_m | ||
| vga | ||
| Makefile | ||