diff options
| -rw-r--r-- | doc/README.mx31 | 19 | ||||
| -rw-r--r-- | drivers/rtc/mc13783-rtc.c | 6 | ||||
| -rw-r--r-- | include/configs/imx31_litekit.h | 3 | ||||
| -rw-r--r-- | include/configs/mx31ads.h | 3 |
4 files changed, 29 insertions, 2 deletions
diff --git a/doc/README.mx31 b/doc/README.mx31 new file mode 100644 index 000000000..f912b66fe --- /dev/null +++ b/doc/README.mx31 @@ -0,0 +1,19 @@ + +U-Boot for Freescale i.MX31 + +This file contains information for the port of U-Boot to the Freescale +i.MX31 SoC. + +1. CONFIGURATION OPTIONS/SETTINGS +--------------------------------- + +1.1 Configuration of MC13783 SPI bus +------------------------------------ +The power management companion chip MC13783 is connected to the +i.MX31 via an SPI bus. Use the following configuration options +to setup the bus and chip select used for a particular board. + +CONFIG_MC13783_SPI_BUS -- defines the SPI bus the MC13783 is connected to. + Note that 0 is CSPI1, 1 is CSPI2 and 2 is CSPI3. +CONFIG_MC13783_SPI_CS -- define the chip select the MC13783 s connected to. + diff --git a/drivers/rtc/mc13783-rtc.c b/drivers/rtc/mc13783-rtc.c index 6ea913788..05db2f1d4 100644 --- a/drivers/rtc/mc13783-rtc.c +++ b/drivers/rtc/mc13783-rtc.c @@ -34,7 +34,8 @@ int rtc_get(struct rtc_time *rtc) if (!slave) { /* FIXME: Verify the max SCK rate */ - slave = spi_setup_slave(1, 0, 1000000, + slave = spi_setup_slave(CONFIG_MC13783_SPI_BUS, + CONFIG_MC13783_SPI_CS, 1000000, SPI_MODE_2 | SPI_CS_HIGH); if (!slave) return -1; @@ -83,7 +84,8 @@ int rtc_set(struct rtc_time *rtc) if (!slave) { /* FIXME: Verify the max SCK rate */ - slave = spi_setup_slave(1, 0, 1000000, + slave = spi_setup_slave(CONFIG_MC13783_SPI_BUS, + CONFIG_MC13783_SPI_CS, 1000000, SPI_MODE_2 | SPI_CS_HIGH); if (!slave) return -1; diff --git a/include/configs/imx31_litekit.h b/include/configs/imx31_litekit.h index c4763335b..62a03fac8 100644 --- a/include/configs/imx31_litekit.h +++ b/include/configs/imx31_litekit.h @@ -69,6 +69,9 @@ #define CONFIG_DEFAULT_SPI_MODE (SPI_MODE_2 | SPI_CS_HIGH) #define CONFIG_RTC_MC13783 1 +/* MC13783 connected to CSPI2 and SS0 */ +#define CONFIG_MC13783_SPI_BUS 1 +#define CONFIG_MC13783_SPI_CS 0 /* allow to overwrite serial and ethaddr */ #define CONFIG_ENV_OVERWRITE diff --git a/include/configs/mx31ads.h b/include/configs/mx31ads.h index 9ede7645d..b9ad3e4af 100644 --- a/include/configs/mx31ads.h +++ b/include/configs/mx31ads.h @@ -66,6 +66,9 @@ #define CONFIG_DEFAULT_SPI_MODE (SPI_MODE_2 | SPI_CS_HIGH) #define CONFIG_RTC_MC13783 1 +/* MC13783 connected to CSPI2 and SS0 */ +#define CONFIG_MC13783_SPI_BUS 1 +#define CONFIG_MC13783_SPI_CS 0 /* allow to overwrite serial and ethaddr */ #define CONFIG_ENV_OVERWRITE |