mirror of
https://github.com/AsahiLinux/u-boot
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d7f72b6830
Add new board based on the Toradex Verdin iMX8M Mini SoM, the MX8Menlo. The board is a compatible replacement for i.MX53 M53Menlo and features USB, multiple UARTs, ethernet, LEDs, SD and eMMC. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Fabio Estevam <festevam@denx.de> Cc: Marcel Ziswiler <marcel.ziswiler@toradex.com> Cc: Max Krummenacher <max.krummenacher@toradex.com> Cc: Peng Fan <peng.fan@nxp.com> Cc: Stefano Babic <sbabic@denx.de>
56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2021-2022 Marek Vasut <marex@denx.de>
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*/
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#include <common.h>
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#include <asm/arch/clock.h>
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#include <asm/arch/imx8mm_pins.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/global_data.h>
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#include <asm/io.h>
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#include <asm/mach-imx/iomux-v3.h>
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#include <spl.h>
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#define UART_PAD_CTRL (PAD_CTL_PUE | PAD_CTL_PE | PAD_CTL_DSE4)
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#define WDOG_PAD_CTRL (PAD_CTL_DSE6 | PAD_CTL_ODE | PAD_CTL_PUE | PAD_CTL_PE)
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/* Verdin UART_3, Console/Debug UART */
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static iomux_v3_cfg_t const uart_pads[] = {
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IMX8MM_PAD_SAI3_TXFS_UART2_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
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IMX8MM_PAD_SAI3_TXC_UART2_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
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};
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static iomux_v3_cfg_t const wdog_pads[] = {
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IMX8MM_PAD_GPIO1_IO02_WDOG1_WDOG_B | MUX_PAD_CTRL(WDOG_PAD_CTRL),
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};
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#define SNVS_BASE_ADDR 0x30370000
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#define SNVS_LPSR 0x4c
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#define SNVS_LPLVDR 0x64
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#define SNVS_LPPGDR_INIT 0x41736166
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static void setup_snvs(void)
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{
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/* Enable SNVS clock */
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clock_enable(CCGR_SNVS, 1);
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/* Initialize glitch detect */
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writel(SNVS_LPPGDR_INIT, SNVS_BASE_ADDR + SNVS_LPLVDR);
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/* Clear interrupt status */
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writel(0xffffffff, SNVS_BASE_ADDR + SNVS_LPSR);
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}
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void board_early_init(void)
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{
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struct wdog_regs *wdog = (struct wdog_regs *)WDOG1_BASE_ADDR;
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imx_iomux_v3_setup_multiple_pads(wdog_pads, ARRAY_SIZE(wdog_pads));
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set_wdog_reset(wdog);
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imx_iomux_v3_setup_multiple_pads(uart_pads, ARRAY_SIZE(uart_pads));
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init_uart_clk(1);
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setup_snvs();
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}
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