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https://github.com/u-boot/u-boot.git
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2c04d6ede4
The Powkiddy X55 is a Rockchip RK3566 based handheld gaming device.
UART, ADC, eMMC, and SDMMC are tested to work in U-Boot and this
successfully boots mainline Linux.
Kernel commit:
e99adc97e21a ("arm64: dts: rockchip: Add Powkiddy X55")
Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
39 lines
1,011 B
C
39 lines
1,011 B
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2023 Chris Morgan <macromorgan@hotmail.com>
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*/
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#include <asm/io.h>
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#define GPIO4_BASE 0xfe770000
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#define GPIO_SWPORT_DR_L 0x0000
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#define GPIO_SWPORT_DDR_L 0x0008
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#define GPIO_B4 BIT(12)
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#define GPIO_B5 BIT(13)
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#define GPIO_B6 BIT(14)
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#define GPIO_WRITEMASK(bits) ((bits) << 16)
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/*
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* Start LED very early so user knows device is on. Set color
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* to red.
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*/
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void spl_board_init(void)
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{
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/* Set GPIO4_B4, GPIO4_B5, and GPIO4_B6 to output. */
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writel(GPIO_WRITEMASK(GPIO_B6 | GPIO_B5 | GPIO_B4) | \
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(GPIO_B6 | GPIO_B5 | GPIO_B4),
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(GPIO4_BASE + GPIO_SWPORT_DDR_L));
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/* Set GPIO4_B5 and GPIO4_B6 to 0 and GPIO4_B4 to 1. */
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writel(GPIO_WRITEMASK(GPIO_B6 | GPIO_B5 | GPIO_B4) | GPIO_B4,
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(GPIO4_BASE + GPIO_SWPORT_DR_L));
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}
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int rk_board_late_init(void)
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{
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/* Turn off red LED and turn on orange LED. */
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writel(GPIO_WRITEMASK(GPIO_B6 | GPIO_B5 | GPIO_B4) | GPIO_B6,
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(GPIO4_BASE + GPIO_SWPORT_DR_L));
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return 0;
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}
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