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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commitc8ffd1356d, reversing changes made to2ee6f3a5f7. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
46 lines
810 B
C
46 lines
810 B
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2016 Google, Inc
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*/
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#include <common.h>
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#include <dm.h>
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#include <asm/io.h>
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#include <asm/arch/scu_ast2500.h>
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#include <linux/err.h>
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int ast_get_clk(struct udevice **devp)
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{
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return uclass_get_device_by_driver(UCLASS_CLK,
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DM_DRIVER_GET(aspeed_ast2500_scu), devp);
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}
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void *ast_get_scu(void)
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{
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struct ast2500_clk_priv *priv;
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struct udevice *dev;
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int ret;
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ret = ast_get_clk(&dev);
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if (ret)
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return ERR_PTR(ret);
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priv = dev_get_priv(dev);
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return priv->scu;
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}
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void ast_scu_unlock(struct ast2500_scu *scu)
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{
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writel(SCU_UNLOCK_VALUE, &scu->protection_key);
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while (!readl(&scu->protection_key))
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;
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}
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void ast_scu_lock(struct ast2500_scu *scu)
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{
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writel(~SCU_UNLOCK_VALUE, &scu->protection_key);
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while (readl(&scu->protection_key))
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;
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}
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