From: Geert Uytterhoeven <geert+renesas@glider.be>
Date: Thu, 6 Nov 2014 11:52:06 +0000 (+0100)
Subject: ARM: shmobile: kzm9g legacy: Set i2c clks_per_count to 2
X-Git-Tag: omap-for-v3.19/fixes-for-merge-window~78^2~4^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b207422bb92f17f4f892a9b8737d44b37fece25b;p=pandora-kernel.git

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>
---

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