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99843fe42d
There is a config option to run the PMIC at nominal voltages
which is not enabled on the i.MX8MP Beacon kit, so it the PMIC
runs at overdrive voltages. Unfortuately, the check for this
condition to set the GIC clock parent and rate is backwards from
what it should be, and accidentally sets the GIC clock to nominal
if the PMIC is in overdrive, and sets the GIC clock to overdrive
if the PMIC is in nominal. Fix this by inverting the logic on the
check.
Fixes: ab53bd43db ("arm64: imx: Add support for imx8mp-beacon-kit")
Signed-off-by: Adam Ford <aford173@gmail.com>
130 lines
2.8 KiB
C
130 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright 2022 Logic PD, Inc dba Beacon EmbeddedWorks
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*
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*/
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#include <hang.h>
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#include <init.h>
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#include <log.h>
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#include <spl.h>
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#include <asm/global_data.h>
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#include <asm/arch/clock.h>
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#include <asm/arch/imx8mp_pins.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/mach-imx/boot_mode.h>
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#include <asm/mach-imx/gpio.h>
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#include <asm/mach-imx/iomux-v3.h>
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#include <asm/mach-imx/mxc_i2c.h>
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#include <asm/arch/ddr.h>
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#include <power/pmic.h>
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#include <power/pca9450.h>
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#include <dm/uclass.h>
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#include <dm/device.h>
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DECLARE_GLOBAL_DATA_PTR;
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int spl_board_boot_device(enum boot_device boot_dev_spl)
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{
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return BOOT_DEVICE_BOOTROM;
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}
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void spl_dram_init(void)
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{
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ddr_init(&dram_timing);
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}
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void spl_board_init(void)
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{
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if (IS_ENABLED(CONFIG_FSL_CAAM)) {
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struct udevice *dev;
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int ret;
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ret = uclass_get_device_by_driver(UCLASS_MISC, DM_DRIVER_GET(caam_jr), &dev);
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if (ret)
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printf("Failed to initialize caam_jr: %d\n", ret);
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}
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/*
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* Set GIC clock to 500Mhz for OD VDD_SOC. Kernel driver does
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* not allow to change it. Should set the clock after PMIC
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* setting done. Default is 400Mhz (system_pll1_800m with div = 2)
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* set by ROM for ND VDD_SOC
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*/
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if (!IS_ENABLED(CONFIG_IMX8M_VDD_SOC_850MV)) {
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clock_enable(CCGR_GIC, 0);
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clock_set_target_val(GIC_CLK_ROOT, CLK_ROOT_ON | CLK_ROOT_SOURCE_SEL(5));
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clock_enable(CCGR_GIC, 1);
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}
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}
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#if CONFIG_IS_ENABLED(DM_PMIC_PCA9450)
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int power_init_board(void)
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{
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struct udevice *dev;
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int ret;
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ret = pmic_get("pmic@25", &dev);
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if (ret == -ENODEV) {
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puts("No pmic@25\n");
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return 0;
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}
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if (ret != 0)
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return ret;
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/* BUCKxOUT_DVS0/1 control BUCK123 output */
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pmic_reg_write(dev, PCA9450_BUCK123_DVS, 0x29);
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/*
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* increase VDD_SOC to typical value 0.95V before first
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* DRAM access, set DVS1 to 0.85v for suspend.
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* Enable DVS control through PMIC_STBY_REQ and
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* set B1_ENMODE=1 (ON by PMIC_ON_REQ=H)
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*/
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if (CONFIG_IS_ENABLED(IMX8M_VDD_SOC_850MV))
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pmic_reg_write(dev, PCA9450_BUCK1OUT_DVS0, 0x14);
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else
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pmic_reg_write(dev, PCA9450_BUCK1OUT_DVS0, 0x1C);
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pmic_reg_write(dev, PCA9450_BUCK1OUT_DVS1, 0x14);
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pmic_reg_write(dev, PCA9450_BUCK1CTRL, 0x59);
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/* Kernel uses OD/OD freq for SOC */
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/* To avoid timing risk from SOC to ARM,increase VDD_ARM to OD voltage 0.95v */
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pmic_reg_write(dev, PCA9450_BUCK2OUT_DVS0, 0x1C);
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return 0;
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}
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#endif
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#if IS_ENABLED(CONFIG_SPL_LOAD_FIT)
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int board_fit_config_name_match(const char *name)
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{
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/* Just empty function now - can't decide what to choose */
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debug("%s: %s\n", __func__, name);
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return 0;
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}
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#endif
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void board_init_f(ulong dummy)
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{
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int ret;
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arch_cpu_init();
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ret = spl_early_init();
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if (ret) {
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debug("spl_init() failed: %d\n", ret);
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hang();
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}
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preloader_console_init();
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enable_tzc380();
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power_init_board();
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/* DDR initialization */
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spl_dram_init();
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}
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