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authorDaniel Silverstone <dsilvers@simtec.co.uk>2009-03-13 09:53:46 -0400
committerBen Dooks <ben-linux@fluff.org>2009-04-07 05:18:33 -0400
commitc564e6ae6c5aa6e3995ff87ed4a32b4788ad5109 (patch)
treeb773106104d9897d945709d3bff8a56ff6586da8 /arch/arm/plat-s3c/dev-i2c0.c
parenta192f7153bb33151f83440cd9c0442233a064bf1 (diff)
i2c-s3c2410: Simplify bus frequency calculation
The platform data for the i2c-s3c2410 driver used to allow a min, max and desired frequency for the I2C bus. This patch reduces it to simply a desired frequency ceiling and corrects all the uses of the platform data appropriately. This means, for example, that on a system with a 66MHz fclk, a request for 100KHz will achieve 65KHz which is safe and acceptable, rather than 378KHz which it would have achieved without this change. Signed-off-by: Simtec Linux Team <linux@simtec.co.uk> Signed-off-by: Daniel Silverstone <dsilvers@simtec.co.uk> [ben-linux@fluff.org: tidy subject and description] Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Diffstat (limited to 'arch/arm/plat-s3c/dev-i2c0.c')
-rw-r--r--arch/arm/plat-s3c/dev-i2c0.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/arm/plat-s3c/dev-i2c0.c b/arch/arm/plat-s3c/dev-i2c0.c
index 8eecb466ab4c..428372868fbb 100644
--- a/arch/arm/plat-s3c/dev-i2c0.c
+++ b/arch/arm/plat-s3c/dev-i2c0.c
@@ -1,6 +1,6 @@
1/* linux/arch/arm/plat-s3c/dev-i2c0.c 1/* linux/arch/arm/plat-s3c/dev-i2c0.c
2 * 2 *
3 * Copyright 2008 Simtec Electronics 3 * Copyright 2008,2009 Simtec Electronics
4 * Ben Dooks <ben@simtec.co.uk> 4 * Ben Dooks <ben@simtec.co.uk>
5 * http://armlinux.simtec.co.uk/ 5 * http://armlinux.simtec.co.uk/
6 * 6 *
@@ -50,8 +50,7 @@ struct platform_device s3c_device_i2c0 = {
50static struct s3c2410_platform_i2c default_i2c_data0 __initdata = { 50static struct s3c2410_platform_i2c default_i2c_data0 __initdata = {
51 .flags = 0, 51 .flags = 0,
52 .slave_addr = 0x10, 52 .slave_addr = 0x10,
53 .bus_freq = 100*1000, 53 .frequency = 100*1000,
54 .max_freq = 400*1000,
55 .sda_delay = 100, 54 .sda_delay = 100,
56}; 55};
57 56