On AM335x EVM[1], 1. pin AM335X_ECAP0_IN_PWM0_OUT is used to enable the backlight. ECAP0 can be configured in single channel PWM mode. If CONFIG_PWM_TI_ECAP is enabled, perform eCAP0 pin muxing.
2. Pins LCD_DATA0 - LCD_DATA15, gpmc_ad8 - gpmc_ad15 and lcd_vsync, lcd_sync, lcd_ac_bias_en, lcd_pclk are used for driving LCD. If CONFIG_AM335X_LCD is enabled, perform the LCD pin muxing. This is required to enable splash screen support on AM335x EVM. [1] AM335x EVM - https://www.ti.com/tool/TMDXEVM3358 Signed-off-by: Sukrut Bellary <sbell...@baylibre.com> --- board/ti/am335x/mux.c | 49 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) diff --git a/board/ti/am335x/mux.c b/board/ti/am335x/mux.c index 960de15398f8..b661731a038d 100644 --- a/board/ti/am335x/mux.c +++ b/board/ti/am335x/mux.c @@ -274,6 +274,47 @@ static struct module_pin_mux uart3_icev2_pin_mux[] = { {-1}, }; +#if IS_ENABLED(CONFIG_AM335X_LCD) +static struct module_pin_mux lcd_pin_mux[] = { + {OFFSET(lcd_data0), (MODE(0))}, /* LCD-Data(0) */ + {OFFSET(lcd_data1), (MODE(0))}, /* LCD-Data(1) */ + {OFFSET(lcd_data2), (MODE(0))}, /* LCD-Data(2) */ + {OFFSET(lcd_data3), (MODE(0))}, /* LCD-Data(3) */ + {OFFSET(lcd_data4), (MODE(0))}, /* LCD-Data(4) */ + {OFFSET(lcd_data5), (MODE(0))}, /* LCD-Data(5) */ + {OFFSET(lcd_data6), (MODE(0))}, /* LCD-Data(6) */ + {OFFSET(lcd_data7), (MODE(0))}, /* LCD-Data(7) */ + {OFFSET(lcd_data8), (MODE(0))}, /* LCD-Data(8) */ + {OFFSET(lcd_data9), (MODE(0))}, /* LCD-Data(9) */ + {OFFSET(lcd_data10), (MODE(0))}, /* LCD-Data(10) */ + {OFFSET(lcd_data11), (MODE(0))}, /* LCD-Data(11) */ + {OFFSET(lcd_data12), (MODE(0))}, /* LCD-Data(12) */ + {OFFSET(lcd_data13), (MODE(0))}, /* LCD-Data(13) */ + {OFFSET(lcd_data14), (MODE(0))}, /* LCD-Data(14) */ + {OFFSET(lcd_data15), (MODE(0))}, /* LCD-Data(15) */ + {OFFSET(gpmc_ad15), (MODE(1))}, /* LCD-Data(16) */ + {OFFSET(gpmc_ad14), (MODE(1))}, /* LCD-Data(17) */ + {OFFSET(gpmc_ad13), (MODE(1))}, /* LCD-Data(18) */ + {OFFSET(gpmc_ad12), (MODE(1))}, /* LCD-Data(19) */ + {OFFSET(gpmc_ad11), (MODE(1))}, /* LCD-Data(20) */ + {OFFSET(gpmc_ad10), (MODE(1))}, /* LCD-Data(21) */ + {OFFSET(gpmc_ad9), (MODE(1))}, /* LCD-Data(22) */ + {OFFSET(gpmc_ad8), (MODE(1))}, /* LCD-Data(23) */ + {OFFSET(lcd_vsync), (MODE(0))}, /* LCD-VSync */ + {OFFSET(lcd_hsync), (MODE(0))}, /* LCD-HSync */ + {OFFSET(lcd_ac_bias_en), (MODE(0))}, /* LCD-DE */ + {OFFSET(lcd_pclk), (MODE(0))}, /* LCD-CLK */ + {-1}, +}; +#endif + +#if IS_ENABLED(CONFIG_PWM_TI_ECAP) +static struct module_pin_mux ecap_pin_mux[] = { + {OFFSET(ecap0_in_pwm0_out), (MODE(0))}, /* ecap0_in_pwm0_out */ + {-1}, +}; +#endif + #if defined(CONFIG_NOR_BOOT) void enable_norboot_pin_mux(void) { @@ -389,6 +430,14 @@ void enable_board_pin_mux(void) configure_module_pin_mux(mmc1_pin_mux); configure_module_pin_mux(spi0_pin_mux); } + + #if IS_ENABLED(CONFIG_AM335X_LCD) + configure_module_pin_mux(lcd_pin_mux); + #endif + + #if IS_ENABLED(CONFIG_PWM_TI_ECAP) + configure_module_pin_mux(ecap_pin_mux); + #endif } else if (board_is_idk()) { /* Industrial Motor Control (IDK) */ configure_module_pin_mux(mii1_pin_mux); -- 2.34.1
