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| author | vikram pandita <vikram.pandita@ti.com> | 2009-11-22 10:11:31 -0800 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2009-11-22 10:24:33 -0800 |
| commit | 6b61a83b31744d143b0e7bc92f463d831319eabc (patch) | |
| tree | 26e06acf07ec6028822fb29ffb3a61b3d022b310 /arch/arm/mach-omap2/board-zoom-peripherals.c | |
| parent | 62d0b336d4b00bde6e3f0f155009975351823c54 (diff) | |
| download | lwn-6b61a83b31744d143b0e7bc92f463d831319eabc.tar.gz lwn-6b61a83b31744d143b0e7bc92f463d831319eabc.zip | |
omap3: zoom: Drop i2c-1 speed to 2400
The I2C-1 bus frequency on zoom2/zoom3/sdp3630 should be 2.4 MHz.
The speed is limited by TWL5030/GAIA; a higher speed could lead to errors
on the interface.
The maximum I2C speed depends on the system clock for GAIA:
2.2 MHz (sys-clk = 19.2 MHz)
2.4 MHz (sys-clk = 26 MHz)
2.9 MHz (sys-clk = 38.4 MHz)
For Zoom2/Zoom3/SDP3630 the system clock is 26Mhz
and hence choose 2.4Mhz for I2C1 bus speed
Signed-off-by: Vikram Pandita <vikram.pandita@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/mach-omap2/board-zoom-peripherals.c')
| -rwxr-xr-x[-rw-r--r--] | arch/arm/mach-omap2/board-zoom-peripherals.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm/mach-omap2/board-zoom-peripherals.c b/arch/arm/mach-omap2/board-zoom-peripherals.c index 3535b7a73af7..f14baa392760 100644..100755 --- a/arch/arm/mach-omap2/board-zoom-peripherals.c +++ b/arch/arm/mach-omap2/board-zoom-peripherals.c @@ -243,7 +243,7 @@ static struct twl4030_platform_data zoom_twldata = { static struct i2c_board_info __initdata zoom_i2c_boardinfo[] = { { - I2C_BOARD_INFO("twl4030", 0x48), + I2C_BOARD_INFO("twl5030", 0x48), .flags = I2C_CLIENT_WAKE, .irq = INT_34XX_SYS_NIRQ, .platform_data = &zoom_twldata, @@ -252,7 +252,7 @@ static struct i2c_board_info __initdata zoom_i2c_boardinfo[] = { static int __init omap_i2c_init(void) { - omap_register_i2c_bus(1, 2600, zoom_i2c_boardinfo, + omap_register_i2c_bus(1, 2400, zoom_i2c_boardinfo, ARRAY_SIZE(zoom_i2c_boardinfo)); omap_register_i2c_bus(2, 400, NULL, 0); omap_register_i2c_bus(3, 400, NULL, 0); |