clk-atlas6.c
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/*
* Clock tree for CSR SiRFatlasVI
*
* Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
*
* Licensed under GPLv2 or later.
*/
#include <linux/module.h>
#include <linux/bitops.h>
#include <linux/io.h>
#include <linux/clk.h>
#include <linux/clkdev.h>
#include <linux/clk-provider.h>
#include <linux/of_address.h>
#include <linux/syscore_ops.h>
#include "atlas6.h"
#include "clk-common.c"
static struct clk_dmn clk_mmc01 = {
.regofs = SIRFSOC_CLKC_MMC01_CFG,
.enable_bit = 59,
.hw = {
.init = &clk_mmc01_init,
},
};
static struct clk_dmn clk_mmc23 = {
.regofs = SIRFSOC_CLKC_MMC23_CFG,
.enable_bit = 60,
.hw = {
.init = &clk_mmc23_init,
},
};
static struct clk_dmn clk_mmc45 = {
.regofs = SIRFSOC_CLKC_MMC45_CFG,
.enable_bit = 61,
.hw = {
.init = &clk_mmc45_init,
},
};
static struct clk_init_data clk_nand_init = {
.name = "nand",
.ops = &dmn_ops,
.parent_names = dmn_clk_parents,
.num_parents = ARRAY_SIZE(dmn_clk_parents),
};
static struct clk_dmn clk_nand = {
.regofs = SIRFSOC_CLKC_NAND_CFG,
.enable_bit = 34,
.hw = {
.init = &clk_nand_init,
},
};
enum atlas6_clk_index {
/* 0 1 2 3 4 5 6 7 8 9 */
rtc, osc, pll1, pll2, pll3, mem, sys, security, dsp, gps,
mf, io, cpu, uart0, uart1, uart2, tsc, i2c0, i2c1, spi0,
spi1, pwmc, efuse, pulse, dmac0, dmac1, nand, audio, usp0, usp1,
usp2, vip, gfx, gfx2d, lcd, vpp, mmc01, mmc23, mmc45, usbpll,
usb0, usb1, cphif, maxclk,
};
static __initdata struct clk_hw *atlas6_clk_hw_array[maxclk] = {
NULL, /* dummy */
NULL,
&clk_pll1.hw,
&clk_pll2.hw,
&clk_pll3.hw,
&clk_mem.hw,
&clk_sys.hw,
&clk_security.hw,
&clk_dsp.hw,
&clk_gps.hw,
&clk_mf.hw,
&clk_io.hw,
&clk_cpu.hw,
&clk_uart0.hw,
&clk_uart1.hw,
&clk_uart2.hw,
&clk_tsc.hw,
&clk_i2c0.hw,
&clk_i2c1.hw,
&clk_spi0.hw,
&clk_spi1.hw,
&clk_pwmc.hw,
&clk_efuse.hw,
&clk_pulse.hw,
&clk_dmac0.hw,
&clk_dmac1.hw,
&clk_nand.hw,
&clk_audio.hw,
&clk_usp0.hw,
&clk_usp1.hw,
&clk_usp2.hw,
&clk_vip.hw,
&clk_gfx.hw,
&clk_gfx2d.hw,
&clk_lcd.hw,
&clk_vpp.hw,
&clk_mmc01.hw,
&clk_mmc23.hw,
&clk_mmc45.hw,
&usb_pll_clk_hw,
&clk_usb0.hw,
&clk_usb1.hw,
&clk_cphif.hw,
};
static struct clk *atlas6_clks[maxclk];
static void __init atlas6_clk_init(struct device_node *np)
{
struct device_node *rscnp;
int i;
rscnp = of_find_compatible_node(NULL, NULL, "sirf,prima2-rsc");
sirfsoc_rsc_vbase = of_iomap(rscnp, 0);
if (!sirfsoc_rsc_vbase)
panic("unable to map rsc registers\n");
of_node_put(rscnp);
sirfsoc_clk_vbase = of_iomap(np, 0);
if (!sirfsoc_clk_vbase)
panic("unable to map clkc registers\n");
/* These are always available (RTC and 26MHz OSC)*/
atlas6_clks[rtc] = clk_register_fixed_rate(NULL, "rtc", NULL,
CLK_IS_ROOT, 32768);
atlas6_clks[osc] = clk_register_fixed_rate(NULL, "osc", NULL,
CLK_IS_ROOT, 26000000);
for (i = pll1; i < maxclk; i++) {
atlas6_clks[i] = clk_register(NULL, atlas6_clk_hw_array[i]);
BUG_ON(!atlas6_clks[i]);
}
clk_register_clkdev(atlas6_clks[cpu], NULL, "cpu");
clk_register_clkdev(atlas6_clks[io], NULL, "io");
clk_register_clkdev(atlas6_clks[mem], NULL, "mem");
clk_register_clkdev(atlas6_clks[mem], NULL, "osc");
clk_data.clks = atlas6_clks;
clk_data.clk_num = maxclk;
of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
}
CLK_OF_DECLARE(atlas6_clk, "sirf,atlas6-clkc", atlas6_clk_init);