The am335x from BeagleBone use i2c EEPROM to detect capes. The memory is wired to i2c bus 2 therefore it need to be enabled.
Add i2c2 clock, pinmux description and pinmux enable function.
Signed-off-by: Kory Maincent kory.maincent@bootlin.com --- arch/arm/mach-omap2/am33xx/clock_am33xx.c | 1 + board/ti/am335x/board.c | 2 ++ board/ti/am335x/board.h | 1 + board/ti/am335x/mux.c | 15 +++++++++++++++ 4 files changed, 19 insertions(+)
diff --git a/arch/arm/mach-omap2/am33xx/clock_am33xx.c b/arch/arm/mach-omap2/am33xx/clock_am33xx.c index 2427933c8b..7c67444024 100644 --- a/arch/arm/mach-omap2/am33xx/clock_am33xx.c +++ b/arch/arm/mach-omap2/am33xx/clock_am33xx.c @@ -220,6 +220,7 @@ void enable_basic_clocks(void) &cmper->gpio2clkctrl, &cmper->gpio3clkctrl, &cmper->i2c1clkctrl, + &cmper->i2c2clkctrl, &cmper->cpgmac0clkctrl, &cmper->spi0clkctrl, &cmrtc->rtcclkctrl, diff --git a/board/ti/am335x/board.c b/board/ti/am335x/board.c index 984cc5e3ba..56cdda856c 100644 --- a/board/ti/am335x/board.c +++ b/board/ti/am335x/board.c @@ -76,8 +76,10 @@ static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE; void do_board_detect(void) { enable_i2c0_pin_mux(); + enable_i2c2_pin_mux(); #ifndef CONFIG_DM_I2C i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED, CONFIG_SYS_OMAP24_I2C_SLAVE); + i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED2, CONFIG_SYS_OMAP24_I2C_SLAVE2); #endif if (ti_i2c_eeprom_am_get(CONFIG_EEPROM_BUS_ADDRESS, CONFIG_EEPROM_CHIP_ADDRESS)) diff --git a/board/ti/am335x/board.h b/board/ti/am335x/board.h index 48df914af9..c2962111c1 100644 --- a/board/ti/am335x/board.h +++ b/board/ti/am335x/board.h @@ -93,5 +93,6 @@ void enable_uart3_pin_mux(void); void enable_uart4_pin_mux(void); void enable_uart5_pin_mux(void); void enable_i2c0_pin_mux(void); +void enable_i2c2_pin_mux(void); void enable_board_pin_mux(void); #endif diff --git a/board/ti/am335x/mux.c b/board/ti/am335x/mux.c index 6fb2c009ba..78dc0cca42 100644 --- a/board/ti/am335x/mux.c +++ b/board/ti/am335x/mux.c @@ -124,6 +124,14 @@ static struct module_pin_mux i2c1_pin_mux[] = { {-1}, };
+static struct module_pin_mux i2c2_pin_mux[] = { + {OFFSET(uart1_ctsn), (MODE(3) | RXACTIVE | + PULLUDEN | PULLUP_EN | SLEWCTRL)}, /* I2C_DATA */ + {OFFSET(uart1_rtsn), (MODE(3) | RXACTIVE | + PULLUDEN | PULLUP_EN | SLEWCTRL)}, /* I2C_SCLK */ + {-1}, +}; + static struct module_pin_mux spi0_pin_mux[] = { {OFFSET(spi0_sclk), (MODE(0) | RXACTIVE | PULLUDEN)}, /* SPI0_SCLK */ {OFFSET(spi0_d0), (MODE(0) | RXACTIVE | @@ -308,6 +316,11 @@ void enable_i2c0_pin_mux(void) configure_module_pin_mux(i2c0_pin_mux); }
+void enable_i2c2_pin_mux(void) +{ + configure_module_pin_mux(i2c2_pin_mux); +} + /* * The AM335x GP EVM, if daughter card(s) are connected, can have 8 * different profiles. These profiles determine what peripherals are @@ -367,6 +380,7 @@ void enable_board_pin_mux(void) #else configure_module_pin_mux(mmc1_pin_mux); #endif + configure_module_pin_mux(i2c2_pin_mux); } else if (board_is_gp_evm()) { /* General Purpose EVM */ unsigned short profile = detect_daughter_board_profile(); @@ -411,6 +425,7 @@ void enable_board_pin_mux(void) #else configure_module_pin_mux(mmc1_pin_mux); #endif + configure_module_pin_mux(i2c2_pin_mux); } else if (board_is_pb()) { configure_module_pin_mux(mii1_pin_mux); configure_module_pin_mux(mmc0_pin_mux);