diff options
| -rw-r--r-- | arch/arm/mach-imx/Makefile | 2 | ||||
| -rw-r--r-- | arch/arm/mach-imx/clk-imx1.c | 108 | ||||
| -rw-r--r-- | arch/arm/mach-imx/imx1.c | 3 |
3 files changed, 111 insertions, 2 deletions
diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile index 282913d91d..994159dfb4 100644 --- a/arch/arm/mach-imx/Makefile +++ b/arch/arm/mach-imx/Makefile @@ -1,6 +1,6 @@ obj-y += clocksource.o gpio.o obj-$(CONFIG_RESET_SOURCE) += reset_source.o -obj-$(CONFIG_ARCH_IMX1) += speed-imx1.o imx1.o iomux-v1.o +obj-$(CONFIG_ARCH_IMX1) += speed-imx1.o imx1.o iomux-v1.o clk-imx1.o obj-$(CONFIG_ARCH_IMX25) += speed-imx25.o imx25.o iomux-v3.o clk-imx25.o obj-$(CONFIG_ARCH_IMX21) += speed-imx21.o imx21.o iomux-v1.o obj-$(CONFIG_ARCH_IMX27) += speed-imx27.o imx27.o iomux-v1.o clk-imx27.o diff --git a/arch/arm/mach-imx/clk-imx1.c b/arch/arm/mach-imx/clk-imx1.c new file mode 100644 index 0000000000..ecad0d6d1c --- /dev/null +++ b/arch/arm/mach-imx/clk-imx1.c @@ -0,0 +1,108 @@ +/* + * Copyright (C) 2008 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#include <common.h> +#include <init.h> +#include <driver.h> +#include <linux/clk.h> +#include <io.h> +#include <linux/clkdev.h> +#include <linux/err.h> +#include <mach/imx1-regs.h> + +#include "clk.h" + +#define CCM_CSCR 0x0 +#define CCM_MPCTL0 0x4 +#define CCM_SPCTL0 0xc +#define CCM_PCDR 0x20 + +enum imx1_clks { + dummy, clk32, clk16m, clk32_premult, prem, mpll, spll, mcu, + fclk, hclk, clk48m, per1, per2, per3, clko, dma_gate, csi_gate, + mma_gate, usbd_gate, clk_max +}; + +static struct clk *clks[clk_max]; + +static const char *prem_sel_clks[] = { + "clk32_premult", + "clk16m", +}; + +static const char *clko_sel_clks[] = { + "per1", + "hclk", + "clk48m", + "clk16m", + "prem", + "fclk", +}; + +int __init mx1_clocks_init(void __iomem *regs, unsigned long fref) +{ + clks[dummy] = clk_fixed("dummy", 0); + clks[clk32] = clk_fixed("clk32", fref); + clks[clk16m] = clk_fixed("clk16m", 16000000); + clks[clk32_premult] = imx_clk_fixed_factor("clk32_premult", "clk32", 512, 1); + clks[prem] = imx_clk_mux("prem", regs + CCM_CSCR, 16, 1, prem_sel_clks, + ARRAY_SIZE(prem_sel_clks)); + clks[mpll] = imx_clk_pllv1("mpll", "clk32_premult", regs + CCM_MPCTL0); + clks[spll] = imx_clk_pllv1("spll", "prem", regs + CCM_SPCTL0); + clks[mcu] = imx_clk_divider("mcu", "clk32_premult", regs + CCM_CSCR, 15, 1); + clks[fclk] = imx_clk_divider("fclk", "mpll", regs + CCM_CSCR, 15, 1); + clks[hclk] = imx_clk_divider("hclk", "spll", regs + CCM_CSCR, 10, 4); + clks[clk48m] = imx_clk_divider("clk48m", "spll", regs + CCM_CSCR, 26, 3); + clks[per1] = imx_clk_divider("per1", "spll", regs + CCM_PCDR, 0, 4); + clks[per2] = imx_clk_divider("per2", "spll", regs + CCM_PCDR, 4, 4); + clks[per3] = imx_clk_divider("per3", "spll", regs + CCM_PCDR, 16, 7); + clks[clko] = imx_clk_mux("clko", regs + CCM_CSCR, 29, 3, clko_sel_clks, + ARRAY_SIZE(clko_sel_clks)); + + clkdev_add_physbase(clks[per1], MX1_TIM1_BASE_ADDR, NULL); + clkdev_add_physbase(clks[per1], MX1_TIM2_BASE_ADDR, NULL); + clkdev_add_physbase(clks[per2], MX1_LCDC_BASE_ADDR, NULL); + clkdev_add_physbase(clks[per1], MX1_UART1_BASE_ADDR, NULL); + clkdev_add_physbase(clks[per1], MX1_UART2_BASE_ADDR, NULL); + clkdev_add_physbase(clks[per2], MX1_CSPI1_BASE_ADDR, NULL); + clkdev_add_physbase(clks[per2], MX1_CSPI2_BASE_ADDR, NULL); + clkdev_add_physbase(clks[hclk], MX1_I2C_BASE_ADDR, NULL); + + return 0; +} + +static int imx1_ccm_probe(struct device_d *dev) +{ + void __iomem *regs; + + regs = dev_request_mem_region(dev, 0); + + mx1_clocks_init(regs, 32000); + + return 0; +} + +static struct driver_d imx1_ccm_driver = { + .probe = imx1_ccm_probe, + .name = "imx1-ccm", +}; + +static int imx1_ccm_init(void) +{ + return register_driver(&imx1_ccm_driver); +} +postcore_initcall(imx1_ccm_init); diff --git a/arch/arm/mach-imx/imx1.c b/arch/arm/mach-imx/imx1.c index 536a9ada55..790e4535d7 100644 --- a/arch/arm/mach-imx/imx1.c +++ b/arch/arm/mach-imx/imx1.c @@ -25,6 +25,7 @@ void imx1_setup_eimcs(size_t cs, unsigned upper, unsigned lower) static int imx1_init(void) { + add_generic_device("imx1-ccm", 0, NULL, MX1_CCM_BASE_ADDR, 0x1000, IORESOURCE_MEM, NULL); add_generic_device("imx1-gpt", 0, NULL, MX1_TIM1_BASE_ADDR, 0x100, IORESOURCE_MEM, NULL); add_generic_device("imx1-gpio", 0, NULL, MX1_GPIO1_BASE_ADDR, 0x100, IORESOURCE_MEM, NULL); add_generic_device("imx1-gpio", 1, NULL, MX1_GPIO2_BASE_ADDR, 0x100, IORESOURCE_MEM, NULL); @@ -33,4 +34,4 @@ static int imx1_init(void) return 0; } -coredevice_initcall(imx1_init); +postcore_initcall(imx1_init); |