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yaml
---
r: 324285
b: refs/heads/master
c: e1b53b3
h: refs/heads/master
i:
  324283: ad89d18
v: v3
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Chao Xie authored and Mike Turquette committed Aug 28, 2012
1 parent 012f1d4 commit 92204cc
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Showing 3 changed files with 349 additions and 1 deletion.
2 changes: 1 addition & 1 deletion [refs]
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---
refs/heads/master: 6b63f023184e34b404b96bb9a8c4ac6692ff3fbd
refs/heads/master: e1b53b3d0fba5f052d3306bfac01ee40dc3c0d37
2 changes: 2 additions & 0 deletions trunk/drivers/clk/mmp/Makefile
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#

obj-y += clk-apbc.o clk-apmu.o clk-frac.o

obj-$(CONFIG_CPU_PXA168) += clk-pxa168.o
346 changes: 346 additions & 0 deletions trunk/drivers/clk/mmp/clk-pxa168.c
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/*
* pxa168 clock framework source file
*
* Copyright (C) 2012 Marvell
* Chao Xie <xiechao.mail@gmail.com>
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/spinlock.h>
#include <linux/io.h>
#include <linux/delay.h>
#include <linux/err.h>

#include <mach/addr-map.h>

#include "clk.h"

#define APBC_RTC 0x28
#define APBC_TWSI0 0x2c
#define APBC_KPC 0x30
#define APBC_UART0 0x0
#define APBC_UART1 0x4
#define APBC_GPIO 0x8
#define APBC_PWM0 0xc
#define APBC_PWM1 0x10
#define APBC_PWM2 0x14
#define APBC_PWM3 0x18
#define APBC_SSP0 0x81c
#define APBC_SSP1 0x820
#define APBC_SSP2 0x84c
#define APBC_SSP3 0x858
#define APBC_SSP4 0x85c
#define APBC_TWSI1 0x6c
#define APBC_UART2 0x70
#define APMU_SDH0 0x54
#define APMU_SDH1 0x58
#define APMU_USB 0x5c
#define APMU_DISP0 0x4c
#define APMU_CCIC0 0x50
#define APMU_DFC 0x60
#define MPMU_UART_PLL 0x14

static DEFINE_SPINLOCK(clk_lock);

static struct clk_factor_masks uart_factor_masks = {
.factor = 2,
.num_mask = 0x1fff,
.den_mask = 0x1fff,
.num_shift = 16,
.den_shift = 0,
};

static struct clk_factor_tbl uart_factor_tbl[] = {
{.num = 8125, .den = 1536}, /*14.745MHZ */
};

static const char *uart_parent[] = {"pll1_3_16", "uart_pll"};
static const char *ssp_parent[] = {"pll1_96", "pll1_48", "pll1_24", "pll1_12"};
static const char *sdh_parent[] = {"pll1_12", "pll1_13"};
static const char *disp_parent[] = {"pll1_2", "pll1_12"};
static const char *ccic_parent[] = {"pll1_2", "pll1_12"};
static const char *ccic_phy_parent[] = {"pll1_6", "pll1_12"};

void __init pxa168_clk_init(void)
{
struct clk *clk;
struct clk *uart_pll;
void __iomem *mpmu_base;
void __iomem *apmu_base;
void __iomem *apbc_base;

mpmu_base = ioremap(APB_PHYS_BASE + 0x50000, SZ_4K);
if (mpmu_base == NULL) {
pr_err("error to ioremap MPMU base\n");
return;
}

apmu_base = ioremap(AXI_PHYS_BASE + 0x82800, SZ_4K);
if (apmu_base == NULL) {
pr_err("error to ioremap APMU base\n");
return;
}

apbc_base = ioremap(APB_PHYS_BASE + 0x15000, SZ_4K);
if (apbc_base == NULL) {
pr_err("error to ioremap APBC base\n");
return;
}

clk = clk_register_fixed_rate(NULL, "clk32", NULL, CLK_IS_ROOT, 3200);
clk_register_clkdev(clk, "clk32", NULL);

clk = clk_register_fixed_rate(NULL, "vctcxo", NULL, CLK_IS_ROOT,
26000000);
clk_register_clkdev(clk, "vctcxo", NULL);

clk = clk_register_fixed_rate(NULL, "pll1", NULL, CLK_IS_ROOT,
624000000);
clk_register_clkdev(clk, "pll1", NULL);

clk = clk_register_fixed_factor(NULL, "pll1_2", "pll1",
CLK_SET_RATE_PARENT, 1, 2);
clk_register_clkdev(clk, "pll1_2", NULL);

clk = clk_register_fixed_factor(NULL, "pll1_4", "pll1_2",
CLK_SET_RATE_PARENT, 1, 2);
clk_register_clkdev(clk, "pll1_4", NULL);

clk = clk_register_fixed_factor(NULL, "pll1_8", "pll1_4",
CLK_SET_RATE_PARENT, 1, 2);
clk_register_clkdev(clk, "pll1_8", NULL);

clk = clk_register_fixed_factor(NULL, "pll1_16", "pll1_8",
CLK_SET_RATE_PARENT, 1, 2);
clk_register_clkdev(clk, "pll1_16", NULL);

clk = clk_register_fixed_factor(NULL, "pll1_6", "pll1_2",
CLK_SET_RATE_PARENT, 1, 3);
clk_register_clkdev(clk, "pll1_6", NULL);

clk = clk_register_fixed_factor(NULL, "pll1_12", "pll1_6",
CLK_SET_RATE_PARENT, 1, 2);
clk_register_clkdev(clk, "pll1_12", NULL);

clk = clk_register_fixed_factor(NULL, "pll1_24", "pll1_12",
CLK_SET_RATE_PARENT, 1, 2);
clk_register_clkdev(clk, "pll1_24", NULL);

clk = clk_register_fixed_factor(NULL, "pll1_48", "pll1_24",
CLK_SET_RATE_PARENT, 1, 2);
clk_register_clkdev(clk, "pll1_48", NULL);

clk = clk_register_fixed_factor(NULL, "pll1_96", "pll1_48",
CLK_SET_RATE_PARENT, 1, 2);
clk_register_clkdev(clk, "pll1_96", NULL);

clk = clk_register_fixed_factor(NULL, "pll1_13", "pll1",
CLK_SET_RATE_PARENT, 1, 13);
clk_register_clkdev(clk, "pll1_13", NULL);

clk = clk_register_fixed_factor(NULL, "pll1_13_1_5", "pll1",
CLK_SET_RATE_PARENT, 2, 3);
clk_register_clkdev(clk, "pll1_13_1_5", NULL);

clk = clk_register_fixed_factor(NULL, "pll1_2_1_5", "pll1",
CLK_SET_RATE_PARENT, 2, 3);
clk_register_clkdev(clk, "pll1_2_1_5", NULL);

clk = clk_register_fixed_factor(NULL, "pll1_3_16", "pll1",
CLK_SET_RATE_PARENT, 3, 16);
clk_register_clkdev(clk, "pll1_3_16", NULL);

uart_pll = mmp_clk_register_factor("uart_pll", "pll1_4", 0,
mpmu_base + MPMU_UART_PLL,
&uart_factor_masks, uart_factor_tbl,
ARRAY_SIZE(uart_factor_tbl));
clk_set_rate(uart_pll, 14745600);
clk_register_clkdev(uart_pll, "uart_pll", NULL);

clk = mmp_clk_register_apbc("twsi0", "pll1_13_1_5",
apbc_base + APBC_TWSI0, 10, 0, &clk_lock);
clk_register_clkdev(clk, NULL, "pxa2xx-i2c.0");

clk = mmp_clk_register_apbc("twsi1", "pll1_13_1_5",
apbc_base + APBC_TWSI1, 10, 0, &clk_lock);
clk_register_clkdev(clk, NULL, "pxa2xx-i2c.1");

clk = mmp_clk_register_apbc("gpio", "vctcxo",
apbc_base + APBC_GPIO, 10, 0, &clk_lock);
clk_register_clkdev(clk, NULL, "pxa-gpio");

clk = mmp_clk_register_apbc("kpc", "clk32",
apbc_base + APBC_KPC, 10, 0, &clk_lock);
clk_register_clkdev(clk, NULL, "pxa27x-keypad");

clk = mmp_clk_register_apbc("rtc", "clk32",
apbc_base + APBC_RTC, 10, 0, &clk_lock);
clk_register_clkdev(clk, NULL, "sa1100-rtc");

clk = mmp_clk_register_apbc("pwm0", "pll1_48",
apbc_base + APBC_PWM0, 10, 0, &clk_lock);
clk_register_clkdev(clk, NULL, "pxa168-pwm.0");

clk = mmp_clk_register_apbc("pwm1", "pll1_48",
apbc_base + APBC_PWM1, 10, 0, &clk_lock);
clk_register_clkdev(clk, NULL, "pxa168-pwm.1");

clk = mmp_clk_register_apbc("pwm2", "pll1_48",
apbc_base + APBC_PWM2, 10, 0, &clk_lock);
clk_register_clkdev(clk, NULL, "pxa168-pwm.2");

clk = mmp_clk_register_apbc("pwm3", "pll1_48",
apbc_base + APBC_PWM3, 10, 0, &clk_lock);
clk_register_clkdev(clk, NULL, "pxa168-pwm.3");

clk = clk_register_mux(NULL, "uart0_mux", uart_parent,
ARRAY_SIZE(uart_parent), CLK_SET_RATE_PARENT,
apbc_base + APBC_UART0, 4, 3, 0, &clk_lock);
clk_set_parent(clk, uart_pll);
clk_register_clkdev(clk, "uart_mux.0", NULL);

clk = mmp_clk_register_apbc("uart0", "uart0_mux",
apbc_base + APBC_UART0, 10, 0, &clk_lock);
clk_register_clkdev(clk, NULL, "pxa2xx-uart.0");

clk = clk_register_mux(NULL, "uart1_mux", uart_parent,
ARRAY_SIZE(uart_parent), CLK_SET_RATE_PARENT,
apbc_base + APBC_UART1, 4, 3, 0, &clk_lock);
clk_set_parent(clk, uart_pll);
clk_register_clkdev(clk, "uart_mux.1", NULL);

clk = mmp_clk_register_apbc("uart1", "uart1_mux",
apbc_base + APBC_UART1, 10, 0, &clk_lock);
clk_register_clkdev(clk, NULL, "pxa2xx-uart.1");

clk = clk_register_mux(NULL, "uart2_mux", uart_parent,
ARRAY_SIZE(uart_parent), CLK_SET_RATE_PARENT,
apbc_base + APBC_UART2, 4, 3, 0, &clk_lock);
clk_set_parent(clk, uart_pll);
clk_register_clkdev(clk, "uart_mux.2", NULL);

clk = mmp_clk_register_apbc("uart2", "uart2_mux",
apbc_base + APBC_UART2, 10, 0, &clk_lock);
clk_register_clkdev(clk, NULL, "pxa2xx-uart.2");

clk = clk_register_mux(NULL, "ssp0_mux", ssp_parent,
ARRAY_SIZE(ssp_parent), CLK_SET_RATE_PARENT,
apbc_base + APBC_SSP0, 4, 3, 0, &clk_lock);
clk_register_clkdev(clk, "uart_mux.0", NULL);

clk = mmp_clk_register_apbc("ssp0", "ssp0_mux", apbc_base + APBC_SSP0,
10, 0, &clk_lock);
clk_register_clkdev(clk, NULL, "mmp-ssp.0");

clk = clk_register_mux(NULL, "ssp1_mux", ssp_parent,
ARRAY_SIZE(ssp_parent), CLK_SET_RATE_PARENT,
apbc_base + APBC_SSP1, 4, 3, 0, &clk_lock);
clk_register_clkdev(clk, "ssp_mux.1", NULL);

clk = mmp_clk_register_apbc("ssp1", "ssp1_mux", apbc_base + APBC_SSP1,
10, 0, &clk_lock);
clk_register_clkdev(clk, NULL, "mmp-ssp.1");

clk = clk_register_mux(NULL, "ssp2_mux", ssp_parent,
ARRAY_SIZE(ssp_parent), CLK_SET_RATE_PARENT,
apbc_base + APBC_SSP2, 4, 3, 0, &clk_lock);
clk_register_clkdev(clk, "ssp_mux.2", NULL);

clk = mmp_clk_register_apbc("ssp2", "ssp1_mux", apbc_base + APBC_SSP2,
10, 0, &clk_lock);
clk_register_clkdev(clk, NULL, "mmp-ssp.2");

clk = clk_register_mux(NULL, "ssp3_mux", ssp_parent,
ARRAY_SIZE(ssp_parent), CLK_SET_RATE_PARENT,
apbc_base + APBC_SSP3, 4, 3, 0, &clk_lock);
clk_register_clkdev(clk, "ssp_mux.3", NULL);

clk = mmp_clk_register_apbc("ssp3", "ssp1_mux", apbc_base + APBC_SSP3,
10, 0, &clk_lock);
clk_register_clkdev(clk, NULL, "mmp-ssp.3");

clk = clk_register_mux(NULL, "ssp4_mux", ssp_parent,
ARRAY_SIZE(ssp_parent), CLK_SET_RATE_PARENT,
apbc_base + APBC_SSP4, 4, 3, 0, &clk_lock);
clk_register_clkdev(clk, "ssp_mux.4", NULL);

clk = mmp_clk_register_apbc("ssp4", "ssp1_mux", apbc_base + APBC_SSP4,
10, 0, &clk_lock);
clk_register_clkdev(clk, NULL, "mmp-ssp.4");

clk = mmp_clk_register_apmu("dfc", "pll1_4", apmu_base + APMU_DFC,
0x19b, &clk_lock);
clk_register_clkdev(clk, NULL, "pxa3xx-nand.0");

clk = clk_register_mux(NULL, "sdh0_mux", sdh_parent,
ARRAY_SIZE(sdh_parent), CLK_SET_RATE_PARENT,
apmu_base + APMU_SDH0, 6, 1, 0, &clk_lock);
clk_register_clkdev(clk, "sdh0_mux", NULL);

clk = mmp_clk_register_apmu("sdh0", "sdh_mux", apmu_base + APMU_SDH0,
0x1b, &clk_lock);
clk_register_clkdev(clk, NULL, "sdhci-pxa.0");

clk = clk_register_mux(NULL, "sdh1_mux", sdh_parent,
ARRAY_SIZE(sdh_parent), CLK_SET_RATE_PARENT,
apmu_base + APMU_SDH1, 6, 1, 0, &clk_lock);
clk_register_clkdev(clk, "sdh1_mux", NULL);

clk = mmp_clk_register_apmu("sdh1", "sdh1_mux", apmu_base + APMU_SDH1,
0x1b, &clk_lock);
clk_register_clkdev(clk, NULL, "sdhci-pxa.1");

clk = mmp_clk_register_apmu("usb", "usb_pll", apmu_base + APMU_USB,
0x9, &clk_lock);
clk_register_clkdev(clk, "usb_clk", NULL);

clk = mmp_clk_register_apmu("sph", "usb_pll", apmu_base + APMU_USB,
0x12, &clk_lock);
clk_register_clkdev(clk, "sph_clk", NULL);

clk = clk_register_mux(NULL, "disp0_mux", disp_parent,
ARRAY_SIZE(disp_parent), CLK_SET_RATE_PARENT,
apmu_base + APMU_DISP0, 6, 1, 0, &clk_lock);
clk_register_clkdev(clk, "disp_mux.0", NULL);

clk = mmp_clk_register_apmu("disp0", "disp0_mux",
apmu_base + APMU_DISP0, 0x1b, &clk_lock);
clk_register_clkdev(clk, "fnclk", "mmp-disp.0");

clk = mmp_clk_register_apmu("disp0_hclk", "disp0_mux",
apmu_base + APMU_DISP0, 0x24, &clk_lock);
clk_register_clkdev(clk, "hclk", "mmp-disp.0");

clk = clk_register_mux(NULL, "ccic0_mux", ccic_parent,
ARRAY_SIZE(ccic_parent), CLK_SET_RATE_PARENT,
apmu_base + APMU_CCIC0, 6, 1, 0, &clk_lock);
clk_register_clkdev(clk, "ccic_mux.0", NULL);

clk = mmp_clk_register_apmu("ccic0", "ccic0_mux",
apmu_base + APMU_CCIC0, 0x1b, &clk_lock);
clk_register_clkdev(clk, "fnclk", "mmp-ccic.0");

clk = clk_register_mux(NULL, "ccic0_phy_mux", ccic_phy_parent,
ARRAY_SIZE(ccic_phy_parent),
CLK_SET_RATE_PARENT, apmu_base + APMU_CCIC0,
7, 1, 0, &clk_lock);
clk_register_clkdev(clk, "ccic_phy_mux.0", NULL);

clk = mmp_clk_register_apmu("ccic0_phy", "ccic0_phy_mux",
apmu_base + APMU_CCIC0, 0x24, &clk_lock);
clk_register_clkdev(clk, "phyclk", "mmp-ccic.0");

clk = clk_register_divider(NULL, "ccic0_sphy_div", "ccic0_mux",
CLK_SET_RATE_PARENT, apmu_base + APMU_CCIC0,
10, 5, 0, &clk_lock);
clk_register_clkdev(clk, "sphyclk_div", NULL);

clk = mmp_clk_register_apmu("ccic0_sphy", "ccic0_sphy_div",
apmu_base + APMU_CCIC0, 0x300, &clk_lock);
clk_register_clkdev(clk, "sphyclk", "mmp-ccic.0");
}

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