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Davinci: ea20: add gpio for keeping power on in board_late_init
The pin called HALTEN drives a transistor to operate the supply voltage. After HALTEN is high, the user can release the power switch button and the device will stay powered on. Signed-off-by: Bastian Ruppert <Bastian.Ruppert@Sewerin.de> CC: sbabic@denx.de CC: dzu@denx.de Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
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2084f21b05
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@ -98,6 +98,10 @@ const struct pinmux_config gpio_pins[] = {
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{ pinmux(13), 8, 3 } /* GPIO6[12] U0_SW1 on EA20-00101_2*/
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{ pinmux(13), 8, 3 } /* GPIO6[12] U0_SW1 on EA20-00101_2*/
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};
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};
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const struct pinmux_config halten_pin[] = {
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{ pinmux(3), 4, 2 } /* GPIO8[6] HALTEN */
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};
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static const struct pinmux_resource pinmuxes[] = {
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static const struct pinmux_resource pinmuxes[] = {
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#ifdef CONFIG_SPI_FLASH
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#ifdef CONFIG_SPI_FLASH
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PINMUX_ITEM(spi1_pins),
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PINMUX_ITEM(spi1_pins),
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@ -205,6 +209,27 @@ int board_init(void)
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return 0;
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return 0;
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}
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}
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#ifdef BOARD_LATE_INIT
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int board_late_init(void)
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{
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struct davinci_gpio *gpio8_base =
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(struct davinci_gpio *)DAVINCI_GPIO_BANK8;
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/* PinMux for HALTEN */
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if (davinci_configure_pin_mux(halten_pin, ARRAY_SIZE(halten_pin)) != 0)
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return 1;
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/* Set HALTEN to high */
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writel((readl(&gpio8_base->set_data) | (1 << 6)),
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&gpio8_base->set_data);
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writel((readl(&gpio8_base->dir) & ~(1 << 6)), &gpio8_base->dir);
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return 0;
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}
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#endif /* BOARD_LATE_INIT */
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#ifdef CONFIG_DRIVER_TI_EMAC
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#ifdef CONFIG_DRIVER_TI_EMAC
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/*
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/*
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@ -31,6 +31,7 @@
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#define CONFIG_SYS_USE_NAND
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#define CONFIG_SYS_USE_NAND
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#define CONFIG_DRIVER_TI_EMAC_USE_RMII
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#define CONFIG_DRIVER_TI_EMAC_USE_RMII
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#define CONFIG_BOARD_EARLY_INIT_F
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#define CONFIG_BOARD_EARLY_INIT_F
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#define BOARD_LATE_INIT
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/*
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/*
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* SoC Configuration
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* SoC Configuration
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