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https://github.com/brain-hackers/u-boot-brain
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a821c4af79
These support the flat device tree. We want to use the dev_read_..() prefix for functions that support both flat tree and live tree. So rename the existing functions to avoid confusion. In the end we will have: 1. dev_read_addr...() - works on devices, supports flat/live tree 2. devfdt_get_addr...() - current functions, flat tree only 3. of_get_address() etc. - new functions, live tree only All drivers will be written to use 1. That function will in turn call either 2 or 3 depending on whether the flat or live tree is in use. Note this involves changing some dead code - the imx_lpi2c.c file. Signed-off-by: Simon Glass <sjg@chromium.org>
79 lines
1.5 KiB
C
79 lines
1.5 KiB
C
/*
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* Copyright (C) 2017 Álvaro Fernández Rojas <noltari@gmail.com>
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*
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* Derived from linux/arch/mips/bcm63xx/clk.c:
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* Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <clk-uclass.h>
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#include <dm.h>
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#include <errno.h>
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#include <asm/io.h>
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#define MAX_CLKS 32
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struct bcm6345_clk_priv {
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void __iomem *regs;
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};
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static int bcm6345_clk_enable(struct clk *clk)
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{
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struct bcm6345_clk_priv *priv = dev_get_priv(clk->dev);
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if (clk->id >= MAX_CLKS)
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return -EINVAL;
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setbits_be32(priv->regs, BIT(clk->id));
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return 0;
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}
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static int bcm6345_clk_disable(struct clk *clk)
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{
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struct bcm6345_clk_priv *priv = dev_get_priv(clk->dev);
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if (clk->id >= MAX_CLKS)
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return -EINVAL;
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clrbits_be32(priv->regs, BIT(clk->id));
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return 0;
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}
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static struct clk_ops bcm6345_clk_ops = {
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.disable = bcm6345_clk_disable,
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.enable = bcm6345_clk_enable,
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};
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static const struct udevice_id bcm6345_clk_ids[] = {
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{ .compatible = "brcm,bcm6345-clk" },
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{ /* sentinel */ }
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};
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static int bcm63xx_clk_probe(struct udevice *dev)
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{
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struct bcm6345_clk_priv *priv = dev_get_priv(dev);
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fdt_addr_t addr;
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fdt_size_t size;
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addr = devfdt_get_addr_size_index(dev, 0, &size);
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if (addr == FDT_ADDR_T_NONE)
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return -EINVAL;
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priv->regs = ioremap(addr, size);
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return 0;
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}
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U_BOOT_DRIVER(clk_bcm6345) = {
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.name = "clk_bcm6345",
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.id = UCLASS_CLK,
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.of_match = bcm6345_clk_ids,
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.ops = &bcm6345_clk_ops,
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.probe = bcm63xx_clk_probe,
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.priv_auto_alloc_size = sizeof(struct bcm6345_clk_priv),
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};
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