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If CONFIG_MICRO_SUPPORT_CARD is enabled, U-Boot initialize SBC (System Bus Controller), which may not be really necessary. Check the "socionext,uniphier-system-bus" node in DT run-time. If and only if it is found and its "status" property is okay, initialize the SBC block. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
28 lines
525 B
C
28 lines
525 B
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2016-2017 Socionext Inc.
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*/
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#include <common.h>
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#include <spl.h>
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#include <linux/io.h>
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#include "../init.h"
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#include "sbc-regs.h"
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void uniphier_ld11_sbc_init(void)
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{
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if (!uniphier_sbc_is_enabled())
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return;
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uniphier_sbc_init_savepin();
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/* necessary for ROM boot ?? */
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/* system bus output enable */
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writel(0x17, PC0CTRL);
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/* pins for NAND and System Bus are multiplexed */
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if (spl_boot_device() != BOOT_DEVICE_NAND)
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uniphier_pin_init("system-bus");
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}
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