From 0fb58abb5d75eea47e001ef47ad8cbca545ac4ca Mon Sep 17 00:00:00 2001 From: Petr Cvek Date: Mon, 28 Sep 2015 23:33:55 +0200 Subject: [PATCH] ARM: pxa: magician: Fix platform data for both PXA27x I2C controllers This patch changes fast_mode settings for the normal and power I2C controller on the HTC Magician machine. Connected device on the Power I2C: - MAX1587A: working in the fast mode Connected devices on the Normal I2C: - UDA1380: working in the fast mode - OV9640: bus became stuck in the fast mode The OV9640 is not using a standard I2C protocol, but an SCCB variant. Maybe it is not fully compatible in the fast mode. Therefore fast mode for normal I2C is disabled. If you not using the OV9640 then you can enable the fast mode for the UDA1380. Signed-off-by: Petr Cvek [included Philipp Zabel's comment change] Signed-off-by: Robert Jarzmik --- arch/arm/mach-pxa/magician.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-pxa/magician.c b/arch/arm/mach-pxa/magician.c index 8b60bd8..835c7f8 100644 --- a/arch/arm/mach-pxa/magician.c +++ b/arch/arm/mach-pxa/magician.c @@ -740,7 +740,16 @@ static struct platform_device strataflash = { */ static struct i2c_pxa_platform_data i2c_info = { - .fast_mode = 1, + /* OV9640 I2C device doesn't support fast mode */ + .fast_mode = 0, +}; + +/* + * PXA I2C power controller + */ + +static struct i2c_pxa_platform_data magician_i2c_power_info = { + .fast_mode = 1, }; /* @@ -789,7 +798,7 @@ static void __init magician_init(void) platform_add_devices(ARRAY_AND_SIZE(devices)); pxa_set_ficp_info(&magician_ficp_info); - pxa27x_set_i2c_power_info(NULL); + pxa27x_set_i2c_power_info(&magician_i2c_power_info); pxa_set_i2c_info(&i2c_info); pxa_set_mci_info(&magician_mci_info); pxa_set_ohci_info(&magician_ohci_info); -- 2.7.4