Hi Wolfram, Simon, Magnus,
This patch series revives i2c on sh73a0/kzm9g (both legacy and reference), and
on r8a73a4/ape6evm (reference).
On these SoCs, the operating clock runs faster that on previous SoCs,
and the internal SCL clock counter gets incremented every 2 clocks of
the operating clock, just like on R-Car Gen2. But if this knowledge is not
available to the driver, probing fails with e.g.
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
The series also updates the binding documentation to list the various
SoC-specific compatible properties, to allow checkpatch to validate DTSes.
This was tested on sh73a0/kzm9g (both legacy and reference).
This was not tested on r8a73a4/ape6evm due to lack of hardware.
Geert Uytterhoeven (5):
ARM: shmobile: kzm9g legacy: Set i2c clks_per_count to 2
i2c: sh_mobile: Add support for r8a73a4 and sh73a0
i2c: sh_mobile: Document SoC-specific bindings
ARM: shmobile: sh73a0 dtsi: Add SoC-specific IIC compatible properties
ARM: shmobile: r8a73a4 dtsi: Add SoC-specific IIC compatible
properties
.../devicetree/bindings/i2c/i2c-sh_mobile.txt | 9 +++++++++
arch/arm/boot/dts/r8a73a4.dtsi | 18 +++++++++---------
arch/arm/boot/dts/sh73a0.dtsi | 10 +++++-----
arch/arm/mach-shmobile/setup-sh73a0.c | 20 ++++++++++++++++++++
drivers/i2c/busses/i2c-sh_mobile.c | 14 ++++++++------
5 files changed, 51 insertions(+), 20 deletions(-)
--
1.9.1
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
