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compulab: eeprom: add support for defining eeprom i2c bus
Create CONFIG_SYS_I2C_EEPROM_BUS #define to tell the EEPROM module what I2C bus the EEPROM is located at. Make cl_eeprom_read() switch to that bus when reading EEPROM. Cc: Igor Grinberg <grinberg@compulab.co.il> Cc: Dmitry Lifshitz <lifshitz@compulab.co.il> Cc: Tom Rini <trini@ti.com> Cc: Marek Vasut <marex@denx.de> Acked-by: Igor Grinberg <grinberg@compulab.co.il> Acked-by: Dmitry Lifshitz <lifshitz@compulab.co.il> Reviewed-by: Marek Vasut <marex@denx.de> Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
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224beb833e
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52658fda7a
4 changed files with 15 additions and 1 deletions
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@ -31,8 +31,19 @@ static int cl_eeprom_layout; /* Implicitly LAYOUT_INVALID */
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static int cl_eeprom_read(uint offset, uchar *buf, int len)
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{
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return i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, offset,
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int res;
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unsigned int current_i2c_bus = i2c_get_bus_num();
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res = i2c_set_bus_num(CONFIG_SYS_I2C_EEPROM_BUS);
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if (res < 0)
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return res;
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res = i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, offset,
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CONFIG_SYS_I2C_EEPROM_ADDR_LEN, buf, len);
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i2c_set_bus_num(current_i2c_bus);
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return res;
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}
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static int cl_eeprom_setup_layout(void)
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@ -107,6 +107,7 @@
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/* I2C Configuration */
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#define CONFIG_SYS_I2C_EEPROM_ADDR 0x50 /* Main EEPROM */
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#define CONFIG_SYS_I2C_EEPROM_ADDR_LEN 1
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#define CONFIG_SYS_I2C_EEPROM_BUS 0
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/* SPL */
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#define CONFIG_SPL_LDSCRIPT "$(CPUDIR)/am33xx/u-boot-spl.lds"
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@ -135,6 +135,7 @@
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#define CONFIG_SYS_I2C_OMAP34XX
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#define CONFIG_SYS_I2C_EEPROM_ADDR 0x50
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#define CONFIG_SYS_I2C_EEPROM_ADDR_LEN 1
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#define CONFIG_SYS_I2C_EEPROM_BUS 0
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#define CONFIG_I2C_MULTI_BUS
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/*
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@ -30,6 +30,7 @@
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#define CONFIG_SYS_I2C_OMAP34XX
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#define CONFIG_SYS_I2C_EEPROM_ADDR 0x50
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#define CONFIG_SYS_I2C_EEPROM_ADDR_LEN 1
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#define CONFIG_SYS_I2C_EEPROM_BUS 0
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/* Enable SD/MMC CD and WP GPIOs */
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#define OMAP_HSMMC_USE_GPIO
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