diff options
Diffstat (limited to 'arch/arm/mach-imx/clk-imx35.c')
| -rw-r--r-- | arch/arm/mach-imx/clk-imx35.c | 219 |
1 files changed, 0 insertions, 219 deletions
diff --git a/arch/arm/mach-imx/clk-imx35.c b/arch/arm/mach-imx/clk-imx35.c deleted file mode 100644 index af6c4058d7..0000000000 --- a/arch/arm/mach-imx/clk-imx35.c +++ /dev/null @@ -1,219 +0,0 @@ -/* - * Copyright (C) 2012 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de> - * - * 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. - * - */ -#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/imx35-regs.h> -#include <reset_source.h> - -#include "clk.h" - -#define CCM_CCMR 0x00 -#define CCM_PDR0 0x04 -#define CCM_PDR1 0x08 -#define CCM_PDR2 0x0C -#define CCM_PDR3 0x10 -#define CCM_PDR4 0x14 -#define CCM_RCSR 0x18 -#define CCM_MPCTL 0x1C -#define CCM_PPCTL 0x20 -#define CCM_ACMR 0x24 -#define CCM_COSR 0x28 -#define CCM_CGR0 0x2C -#define CCM_CGR1 0x30 -#define CCM_CGR2 0x34 -#define CCM_CGR3 0x38 - -struct arm_ahb_div { - unsigned char arm, ahb, sel; -}; - -static struct arm_ahb_div clk_consumer[] = { - { .arm = 1, .ahb = 4, .sel = 0}, - { .arm = 1, .ahb = 3, .sel = 1}, - { .arm = 2, .ahb = 2, .sel = 0}, - { .arm = 0, .ahb = 0, .sel = 0}, - { .arm = 0, .ahb = 0, .sel = 0}, - { .arm = 0, .ahb = 0, .sel = 0}, - { .arm = 4, .ahb = 1, .sel = 0}, - { .arm = 1, .ahb = 5, .sel = 0}, - { .arm = 1, .ahb = 8, .sel = 0}, - { .arm = 1, .ahb = 6, .sel = 1}, - { .arm = 2, .ahb = 4, .sel = 0}, - { .arm = 0, .ahb = 0, .sel = 0}, - { .arm = 0, .ahb = 0, .sel = 0}, - { .arm = 0, .ahb = 0, .sel = 0}, - { .arm = 4, .ahb = 2, .sel = 0}, - { .arm = 0, .ahb = 0, .sel = 0}, -}; - -static char hsp_div_532[] = { 4, 8, 3, 0 }; -static char hsp_div_400[] = { 3, 6, 3, 0 }; - -enum mx35_clks { - ckih, mpll, ppll, mpll_075, arm, hsp, hsp_div, hsp_sel, ahb, ipg, - arm_per_div, ahb_per_div, ipg_per, uart_sel, uart_div, esdhc_sel, - esdhc1_div, esdhc2_div, esdhc3_div, spdif_sel, spdif_div_pre, - spdif_div_post, ssi_sel, ssi1_div_pre, ssi1_div_post, ssi2_div_pre, - ssi2_div_post, usb_sel, usb_div, nfc_div, asrc_gate, pata_gate, - audmux_gate, can1_gate, can2_gate, cspi1_gate, cspi2_gate, ect_gate, - edio_gate, emi_gate, epit1_gate, epit2_gate, esai_gate, esdhc1_gate, - esdhc2_gate, esdhc3_gate, fec_gate, gpio1_gate, gpio2_gate, gpio3_gate, - gpt_gate, i2c1_gate, i2c2_gate, i2c3_gate, iomuxc_gate, ipu_gate, - kpp_gate, mlb_gate, mshc_gate, owire_gate, pwm_gate, rngc_gate, - rtc_gate, rtic_gate, scc_gate, sdma_gate, spba_gate, spdif_gate, - ssi1_gate, ssi2_gate, uart1_gate, uart2_gate, uart3_gate, usbotg_gate, - wdog_gate, max_gate, admux_gate, csi_gate, iim_gate, gpu2d_gate, - clk_max -}; - -static struct clk *clks[clk_max]; - -static const char *std_sel[] = { - "ppll", - "arm", -}; - -static const char *ipg_per_sel[] = { - "ahb_per_div", - "arm_per_div", -}; - -static int imx35_ccm_probe(struct device_d *dev) -{ - struct resource *iores; - u32 pdr0, consumer_sel, hsp_sel; - struct arm_ahb_div *aad; - unsigned char *hsp_div; - void __iomem *base; - u32 reg; - - iores = dev_request_mem_resource(dev, 0); - if (IS_ERR(iores)) - return PTR_ERR(iores); - base = IOMEM(iores->start); - - /* Check reset source */ - reg = readl(base + CCM_RCSR); - - switch (reg & 0x0F) { - case 0x00: - reset_source_set_priority(RESET_POR, 200); - break; - case 0x02: - reset_source_set_priority(RESET_JTAG, 200); - break; - case 0x04: - reset_source_set_priority(RESET_RST, 200); - break; - case 0x08: - reset_source_set_priority(RESET_WDG, 200); - break; - } - - writel(0xffffffff, base + CCM_CGR0); - writel(0xffffffff, base + CCM_CGR1); - writel(0xfbffffff, base + CCM_CGR2); - writel(0xffffffff, base + CCM_CGR3); - - pdr0 = __raw_readl(base + CCM_PDR0); - consumer_sel = (pdr0 >> 16) & 0xf; - aad = &clk_consumer[consumer_sel]; - if (!aad->arm) { - pr_err("i.MX35 clk: illegal consumer mux selection 0x%x\n", consumer_sel); - /* - * We are basically stuck. Continue with a default entry and hope we - * get far enough to actually show the above message - */ - aad = &clk_consumer[0]; - } - - clks[ckih] = clk_fixed("ckih", 24000000); - clks[mpll] = imx_clk_pllv1("mpll", "ckih", base + CCM_MPCTL); - clks[ppll] = imx_clk_pllv1("ppll", "ckih", base + CCM_PPCTL); - - clks[mpll_075] = imx_clk_fixed_factor("mpll_075", "mpll", 3, 4); - - if (aad->sel) - clks[arm] = imx_clk_fixed_factor("arm", "mpll_075", 1, aad->arm); - else - clks[arm] = imx_clk_fixed_factor("arm", "mpll", 1, aad->arm); - - if (clk_get_rate(clks[arm]) > 400000000) - hsp_div = hsp_div_532; - else - hsp_div = hsp_div_400; - - hsp_sel = (pdr0 >> 20) & 0x3; - if (!hsp_div[hsp_sel]) { - pr_err("i.MX35 clk: illegal hsp clk selection 0x%x\n", hsp_sel); - hsp_sel = 0; - } - - clks[hsp] = imx_clk_fixed_factor("hsp", "arm", 1, hsp_div[hsp_sel]); - - clks[ahb] = imx_clk_fixed_factor("ahb", "arm", 1, aad->ahb); - clks[ipg] = imx_clk_fixed_factor("ipg", "ahb", 1, 2); - - clks[arm_per_div] = imx_clk_divider("arm_per_div", "arm", base + CCM_PDR4, 16, 6); - clks[ahb_per_div] = imx_clk_divider("ahb_per_div", "ahb", base + CCM_PDR0, 12, 3); - clks[ipg_per] = imx_clk_mux("ipg_per", base + CCM_PDR0, 26, 1, ipg_per_sel, ARRAY_SIZE(ipg_per_sel)); - - clks[uart_sel] = imx_clk_mux("uart_sel", base + CCM_PDR3, 14, 1, std_sel, ARRAY_SIZE(std_sel)); - clks[uart_div] = imx_clk_divider("uart_div", "uart_sel", base + CCM_PDR4, 10, 6); - - clks[esdhc_sel] = imx_clk_mux("esdhc_sel", base + CCM_PDR4, 9, 1, std_sel, ARRAY_SIZE(std_sel)); - clks[esdhc1_div] = imx_clk_divider("esdhc1_div", "esdhc_sel", base + CCM_PDR3, 0, 6); - clks[esdhc2_div] = imx_clk_divider("esdhc2_div", "esdhc_sel", base + CCM_PDR3, 8, 6); - clks[esdhc3_div] = imx_clk_divider("esdhc3_div", "esdhc_sel", base + CCM_PDR3, 16, 6); - - clks[usb_sel] = imx_clk_mux("usb_sel", base + CCM_PDR4, 9, 1, std_sel, ARRAY_SIZE(std_sel)); - clks[usb_div] = imx_clk_divider("usb_div", "usb_sel", base + CCM_PDR4, 22, 6); - - clkdev_add_physbase(clks[uart_div], MX35_UART1_BASE_ADDR, NULL); - clkdev_add_physbase(clks[uart_div], MX35_UART2_BASE_ADDR, NULL); - clkdev_add_physbase(clks[uart_div], MX35_UART3_BASE_ADDR, NULL); - clkdev_add_physbase(clks[ipg_per], MX35_I2C1_BASE_ADDR, NULL); - clkdev_add_physbase(clks[ipg_per], MX35_I2C2_BASE_ADDR, NULL); - clkdev_add_physbase(clks[ipg_per], MX35_I2C3_BASE_ADDR, NULL); - clkdev_add_physbase(clks[ipg], MX35_CSPI1_BASE_ADDR, NULL); - clkdev_add_physbase(clks[ipg], MX35_CSPI2_BASE_ADDR, NULL); - clkdev_add_physbase(clks[ipg], MX35_FEC_BASE_ADDR, NULL); - clkdev_add_physbase(clks[ipg], MX35_GPT1_BASE_ADDR, NULL); - clkdev_add_physbase(clks[esdhc1_div], MX35_ESDHC1_BASE_ADDR, NULL); - clkdev_add_physbase(clks[esdhc2_div], MX35_ESDHC2_BASE_ADDR, NULL); - clkdev_add_physbase(clks[esdhc3_div], MX35_ESDHC3_BASE_ADDR, NULL); - clkdev_add_physbase(clks[hsp], MX35_IPU_CTRL_BASE_ADDR, NULL); - - return 0; -} - -static __maybe_unused struct of_device_id imx35_ccm_dt_ids[] = { - { - .compatible = "fsl,imx35-ccm", - }, { - /* sentinel */ - } -}; - -static struct driver_d imx35_ccm_driver = { - .probe = imx35_ccm_probe, - .name = "imx35-ccm", - .of_compatible = DRV_OF_COMPAT(imx35_ccm_dt_ids), -}; - -static int imx35_ccm_init(void) -{ - return platform_driver_register(&imx35_ccm_driver); -} -core_initcall(imx35_ccm_init); |