1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright 2018 Google
11 #include <asm/arch-rockchip/clock.h>
12 #include <asm/arch-rockchip/grf_rk3399.h>
13 #include <asm/arch-rockchip/hardware.h>
14 #include <asm/arch-rockchip/misc.h>
16 #define GRF_IO_VSEL_BT656_SHIFT 0
17 #define GRF_IO_VSEL_AUDIO_SHIFT 1
18 #define PMUGRF_CON0_VSEL_SHIFT 8
19 #define PMUGRF_CON0_VOL_SHIFT 9
21 #ifdef CONFIG_SPL_BUILD
22 /* provided to defeat compiler optimisation in board_init_f() */
23 void gru_dummy_function(int i)
27 int board_early_init_f(void)
29 # if defined(CONFIG_TARGET_CHROMEBOOK_BOB) || defined(CONFIG_TARGET_CHROMEBOOK_KEVIN)
33 * Add a delay and ensure that the compiler does not optimise this out.
34 * This is needed since the power rails tail a while to turn on, and
35 * we get garbage serial output otherwise.
38 for (i = 0; i < 150000; i++)
40 gru_dummy_function(sum);
41 #endif /* CONFIG_TARGET_CHROMEBOOK_BOB */
47 #ifndef CONFIG_SPL_BUILD
48 int board_early_init_r(void)
54 * This init is done in SPL, but when chain-loading U-Boot SPL will
55 * have been skipped. Allow the clock driver to check if it needs
58 ret = uclass_get_device_by_driver(UCLASS_CLK,
59 DM_DRIVER_GET(clk_rk3399), &clk);
61 debug("%s: CLK init failed: %d\n", __func__, ret);
69 static void setup_iodomain(void)
71 struct rk3399_grf_regs *grf =
72 syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
73 struct rk3399_pmugrf_regs *pmugrf =
74 syscon_get_first_range(ROCKCHIP_SYSCON_PMUGRF);
76 /* BT656 and audio is in 1.8v domain */
77 rk_setreg(&grf->io_vsel, (1 << GRF_IO_VSEL_BT656_SHIFT |
78 1 << GRF_IO_VSEL_AUDIO_SHIFT));
81 * Set GPIO1 1.8v/3.0v source select to PMU1830_VOL
82 * and explicitly configure that PMU1830_VOL to be 1.8V
84 rk_setreg(&pmugrf->soc_con0, (1 << PMUGRF_CON0_VSEL_SHIFT |
85 1 << PMUGRF_CON0_VOL_SHIFT));
90 const u32 cpuid_offset = 0x7;
91 const u32 cpuid_length = 0x10;
92 u8 cpuid[cpuid_length];
97 ret = rockchip_cpuid_from_efuse(cpuid_offset, cpuid_length, cpuid);
101 ret = rockchip_cpuid_set(cpuid, cpuid_length);
105 ret = rockchip_setup_macaddr();