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1d66af8190
This commit removes the fixed clocks introduced as a stub clock driver
added with commit 75fabc3f64 ("ARM: bcm2835: add stub clock driver").
Originally they were used to drive the AMBA bus and PL011 uart driver.
Now these clocks are derived by the CPRMAN clock driver and configured
in DT.
Additionally, get rid of init_machine function in bcm2835 board file
as there's nothing to do any longer.
Signed-off-by: Danilo Krummrich <danilokrummrich@dk-develop.de>
Acked-by: Eric Anholt <eric@anholt.net>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
81 lines
2.4 KiB
C
81 lines
2.4 KiB
C
/*
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* Copyright (C) 2015 Broadcom
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/clk.h>
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#include <linux/clk-provider.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <dt-bindings/clock/bcm2835-aux.h>
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#define BCM2835_AUXIRQ 0x00
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#define BCM2835_AUXENB 0x04
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static int bcm2835_aux_clk_probe(struct platform_device *pdev)
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{
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struct device *dev = &pdev->dev;
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struct clk_hw_onecell_data *onecell;
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const char *parent;
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struct clk *parent_clk;
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struct resource *res;
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void __iomem *reg, *gate;
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parent_clk = devm_clk_get(dev, NULL);
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if (IS_ERR(parent_clk))
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return PTR_ERR(parent_clk);
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parent = __clk_get_name(parent_clk);
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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reg = devm_ioremap_resource(dev, res);
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if (IS_ERR(reg))
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return PTR_ERR(reg);
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onecell = devm_kmalloc(dev, sizeof(*onecell) + sizeof(*onecell->hws) *
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BCM2835_AUX_CLOCK_COUNT, GFP_KERNEL);
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if (!onecell)
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return -ENOMEM;
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onecell->num = BCM2835_AUX_CLOCK_COUNT;
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gate = reg + BCM2835_AUXENB;
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onecell->hws[BCM2835_AUX_CLOCK_UART] =
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clk_hw_register_gate(dev, "aux_uart", parent, 0, gate, 0, 0, NULL);
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onecell->hws[BCM2835_AUX_CLOCK_SPI1] =
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clk_hw_register_gate(dev, "aux_spi1", parent, 0, gate, 1, 0, NULL);
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onecell->hws[BCM2835_AUX_CLOCK_SPI2] =
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clk_hw_register_gate(dev, "aux_spi2", parent, 0, gate, 2, 0, NULL);
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return of_clk_add_hw_provider(pdev->dev.of_node, of_clk_hw_onecell_get,
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onecell);
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}
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static const struct of_device_id bcm2835_aux_clk_of_match[] = {
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{ .compatible = "brcm,bcm2835-aux", },
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{},
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};
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MODULE_DEVICE_TABLE(of, bcm2835_aux_clk_of_match);
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static struct platform_driver bcm2835_aux_clk_driver = {
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.driver = {
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.name = "bcm2835-aux-clk",
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.of_match_table = bcm2835_aux_clk_of_match,
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},
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.probe = bcm2835_aux_clk_probe,
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};
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builtin_platform_driver(bcm2835_aux_clk_driver);
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MODULE_AUTHOR("Eric Anholt <eric@anholt.net>");
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MODULE_DESCRIPTION("BCM2835 auxiliary peripheral clock driver");
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MODULE_LICENSE("GPL v2");
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