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@@ -7,6 +7,10 @@
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#include <dm.h>
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#include <asm/arch-rockchip/periph.h>
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#include <power/regulator.h>
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+#include <spl_gpio.h>
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+#include <asm/io.h>
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+#include <asm/arch-rockchip/gpio.h>
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+#include <asm/arch-rockchip/grf_rk3399.h>
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#ifndef CONFIG_SPL_BUILD
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int board_early_init_f(void)
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@@ -27,3 +31,31 @@ out:
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return 0;
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}
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#endif
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+
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+#if defined(CONFIG_TPL_BUILD)
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+
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+#define PMUGRF_BASE 0xff320000
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+#define GPIO0_BASE 0xff720000
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+
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+int board_early_init_f(void)
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+{
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+ struct rockchip_gpio_regs * const gpio0 = (void *)GPIO0_BASE;
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+ struct rk3399_pmugrf_regs * const pmugrf = (void *)PMUGRF_BASE;
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+
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+ /**
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+ * 1. Glow yellow LED, termed as low power
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+ * 2. Poll for on board power key press
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+ * 3. Once 2 done, off yellow and glow red LED, termed as full power
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+ * 4. Continue booting...
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+ */
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+ spl_gpio_output(gpio0, GPIO(BANK_A, 2), 1);
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+
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+ spl_gpio_set_pull(&pmugrf->gpio0_p, GPIO(BANK_A, 5), GPIO_PULL_NORMAL);
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+ while (readl(&gpio0->ext_port) & 0x20);
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+
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+ spl_gpio_output(gpio0, GPIO(BANK_A, 2), 0);
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+ spl_gpio_output(gpio0, GPIO(BANK_B, 5), 1);
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+
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+ return 0;
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+}
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+#endif
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