minipack: Change I2C bus 0 clock to 400KHz (torvalds#135)

Summary:
1. Change I2C bus 0 clock to 400KHz
2. Add retry when get BIC update status fail
Pull Request resolved: facebookexternal/openbmc.accton#135

Reviewed By: tomrepo

Differential Revision: D14145628

Pulled By: mikechoifb

fbshipit-source-id: 8013c4d8aa

arch/arm/plat-aspeed/dev-i2c-common.c

@@ -50,6 +50,15 @@ static struct ast_i2c_driver_data ast_i2c_data_1M = {
 	.get_i2c_clock = ast_get_pclk,
 };
 
+static struct ast_i2c_driver_data ast_i2c_data_400K = {
+	.bus_clk = 400000,		//bus clock 400KHz
+	.master_dma = MASTER_XFER_MODE,
+	.slave_dma = SLAVE_XFER_MODE,
+	.request_pool_buff_page = request_pool_buff_page,
+	.free_pool_buff_page = free_pool_buff_page,
+	.get_i2c_clock = ast_get_pclk,
+};
+
 static u64 ast_i2c_dma_mask = 0xffffffffUL;
 static struct resource ast_i2c_dev0_resources[] = {
 	[0] = {
@@ -72,6 +81,8 @@ static struct platform_device ast_i2c_dev0_device = {
 		.coherent_dma_mask = 0xffffffff,
 #if defined(CONFIG_AST_I2C_0_1M)
 		.platform_data = &ast_i2c_data_1M,
+#elif defined(CONFIG_AST_I2C_0_400K)
+		.platform_data = &ast_i2c_data_400K,
 #else
 		.platform_data = &ast_i2c_data,
 #endif
@@ -437,6 +448,8 @@ void __init ast_add_device_i2c_common(void)
 	}
 #if defined(CONFIG_AST_I2C_0_1M)
 	ast_i2c_data_1M.reg_gr = ast_i2c_data.reg_gr;// 1MHz reg_gr setting
+#elif defined(CONFIG_AST_I2C_0_400K)
+	ast_i2c_data_400K.reg_gr = ast_i2c_data.reg_gr;// 400KHz reg_gr setting
 #endif
 	platform_device_register(&ast_i2c_dev0_device);
 	platform_device_register(&ast_i2c_dev1_device);

drivers/i2c/busses/Kconfig

@@ -359,6 +359,10 @@ config AST_I2C_0_1M
         bool "AST I2C0 speed 1MHz"
         depends on I2C_AST
 
+config AST_I2C_0_400K
+        bool "AST I2C0 speed 400KHz"
+        depends on I2C_AST
+
 config AST_I2C_SLAVE_MODE
         bool "AST I2C Slave mode"
 	depends on I2C_AST