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| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2014-11-06 14:52:06 +0300 |
|---|---|---|
| committer | Simon Horman <horms+renesas@verge.net.au> | 2014-11-12 04:38:30 +0300 |
| commit | b207422bb92f17f4f892a9b8737d44b37fece25b (patch) | |
| tree | 5e75ca6d86f7dbc590a1037de31964e6470169b3 /arch/arm/mm/dma-mapping.c | |
| parent | f114040e3ea6e07372334ade75d1ee0775c355e1 (diff) | |
| download | linux-b207422bb92f17f4f892a9b8737d44b37fece25b.tar.xz | |
ARM: shmobile: kzm9g legacy: Set i2c clks_per_count to 2
On sh73a0/kzm9g-legacy, probing of the i2c masters fails with:
i2c-sh_mobile i2c-sh_mobile.0: timing values out of range: L/H=0x208/0x1bf
sh_mobile: probe of i2c-sh_mobile.0 failed with error -22
According to the datasheet, the transfer rate is derived from the HP
clock (which runs at 104 MHz) divided by two. Hence
i2c_sh_mobile_platform_data.clks_per_count should be set to two.
Now probing succeeds, and i2c works:
i2c-sh_mobile i2c-sh_mobile.0: I2C adapter 0 with bus speed 100000 Hz (L/H=0x104/0xe0)
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Diffstat (limited to 'arch/arm/mm/dma-mapping.c')
0 files changed, 0 insertions, 0 deletions