#include #include #include #include #include #include #include "clk.h" #include "common.h" #include "hardware.h" static void __iomem *ccm __initdata; /* Register offsets */ #define CCM_CSCR (ccm + 0x00) #define CCM_MPCTL0 (ccm + 0x04) #define CCM_MPCTL1 (ccm + 0x08) #define CCM_SPCTL0 (ccm + 0x0c) #define CCM_SPCTL1 (ccm + 0x10) #define CCM_OSC26MCTL (ccm + 0x14) #define CCM_PCDR0 (ccm + 0x18) #define CCM_PCDR1 (ccm + 0x1c) #define CCM_PCCR0 (ccm + 0x20) #define CCM_PCCR1 (ccm + 0x24) #define CCM_CCSR (ccm + 0x28) #define CCM_PMCTL (ccm + 0x2c) #define CCM_PMCOUNT (ccm + 0x30) #define CCM_WKGDCTL (ccm + 0x34) #define CCM_CSCR_UPDATE_DIS (1 << 31) #define CCM_CSCR_SSI2 (1 << 23) #define CCM_CSCR_SSI1 (1 << 22) #define CCM_CSCR_VPU (1 << 21) #define CCM_CSCR_MSHC (1 << 20) #define CCM_CSCR_SPLLRES (1 << 19) #define CCM_CSCR_MPLLRES (1 << 18) #define CCM_CSCR_SP (1 << 17) #define CCM_CSCR_MCU (1 << 16) #define CCM_CSCR_OSC26MDIV (1 << 4) #define CCM_CSCR_OSC26M (1 << 3) #define CCM_CSCR_FPM (1 << 2) #define CCM_CSCR_SPEN (1 << 1) #define CCM_CSCR_MPEN (1 << 0) /* i.MX27 TO 2+ */ #define CCM_CSCR_ARM_SRC (1 << 15) #define CCM_SPCTL1_LF (1 << 15) #define CCM_SPCTL1_BRMO (1 << 6) static const char *vpu_sel_clks[] = { "spll", "mpll_main2", }; static const char *cpu_sel_clks[] = { "mpll_main2", "mpll", }; static const char *mpll_sel_clks[] = { "fpm", "mpll_osc_sel", }; static const char *mpll_osc_sel_clks[] = { "ckih", "ckih_div1p5", }; static const char *clko_sel_clks[] = { "ckil", "fpm", "ckih", "ckih", "ckih", "mpll", "spll", "cpu_div", "ahb", "ipg", "per1_div", "per2_div", "per3_div", "per4_div", "ssi1_div", "ssi2_div", "nfc_div", "mshc_div", "vpu_div", "60m", "32k", "usb_div", "dptc", }; static const char *ssi_sel_clks[] = { "spll_gate", "mpll", }; enum mx27_clks { dummy, ckih, ckil, mpll, spll, mpll_main2, ahb, ipg, nfc_div, per1_div, per2_div, per3_div, per4_div, vpu_sel, vpu_div, usb_div, cpu_sel, clko_sel, cpu_div, clko_div, ssi1_sel, ssi2_sel, ssi1_div, ssi2_div, clko_en, ssi2_ipg_gate, ssi1_ipg_gate, slcdc_ipg_gate, sdhc3_ipg_gate, sdhc2_ipg_gate, sdhc1_ipg_gate, scc_ipg_gate, sahara_ipg_gate, rtc_ipg_gate, pwm_ipg_gate, owire_ipg_gate, lcdc_ipg_gate, kpp_ipg_gate, iim_ipg_gate, i2c2_ipg_gate, i2c1_ipg_gate, gpt6_ipg_gate, gpt5_ipg_gate, gpt4_ipg_gate, gpt3_ipg_gate, gpt2_ipg_gate, gpt1_ipg_gate, gpio_ipg_gate, fec_ipg_gate, emma_ipg_gate, dma_ipg_gate, cspi3_ipg_gate, cspi2_ipg_gate, cspi1_ipg_gate, nfc_baud_gate, ssi2_baud_gate, ssi1_baud_gate, vpu_baud_gate, per4_gate, per3_gate, per2_gate, per1_gate, usb_ahb_gate, slcdc_ahb_gate, sahara_ahb_gate, lcdc_ahb_gate, vpu_ahb_gate, fec_ahb_gate, emma_ahb_gate, emi_ahb_gate, dma_ahb_gate, csi_ahb_gate, brom_ahb_gate, ata_ahb_gate, wdog_ipg_gate, usb_ipg_gate, uart6_ipg_gate, uart5_ipg_gate, uart4_ipg_gate, uart3_ipg_gate, uart2_ipg_gate, uart1_ipg_gate, ckih_div1p5, fpm, mpll_osc_sel, mpll_sel, spll_gate, mshc_div, rtic_ipg_gate, mshc_ipg_gate, rtic_ahb_gate, mshc_baud_gate, clk_max }; static struct clk *clk[clk_max]; static struct clk_onecell_data clk_data; static void __init _mx27_clocks_init(unsigned long fref) { BUG_ON(!ccm); clk[dummy] = imx_clk_fixed("dummy", 0); clk[ckih] = imx_clk_fixed("ckih", fref); clk[ckil] = imx_clk_fixed("ckil", 32768); clk[fpm] = imx_clk_fixed_factor("fpm", "ckil", 1024, 1); clk[ckih_div1p5] = imx_clk_fixed_factor("ckih_div1p5", "ckih", 2, 3); clk[mpll_osc_sel] = imx_clk_mux("mpll_osc_sel", CCM_CSCR, 4, 1, mpll_osc_sel_clks, ARRAY_SIZE(mpll_osc_sel_clks)); clk[mpll_sel] = imx_clk_mux("mpll_sel", CCM_CSCR, 16, 1, mpll_sel_clks, ARRAY_SIZE(mpll_sel_clks)); clk[mpll] = imx_clk_pllv1("mpll", "mpll_sel", CCM_MPCTL0); clk[spll] = imx_clk_pllv1("spll", "ckih", CCM_SPCTL0); clk[spll_gate] = imx_clk_gate("spll_gate", "spll", CCM_CSCR, 1); clk[mpll_main2] = imx_clk_fixed_factor("mpll_main2", "mpll", 2, 3); if (mx27_revision() >= IMX_CHIP_REVISION_2_0) { clk[ahb] = imx_clk_divider("ahb", "mpll_main2", CCM_CSCR, 8, 2); clk[ipg] = imx_clk_fixed_factor("ipg", "ahb", 1, 2); } else { clk[ahb] = imx_clk_divider("ahb", "mpll_main2", CCM_CSCR, 9, 4); clk[ipg] = imx_clk_divider("ipg", "ahb", CCM_CSCR, 8, 1); } clk[mshc_div] = imx_clk_divider("mshc_div", "ahb", CCM_PCDR0, 0, 6); clk[nfc_div] = imx_clk_divider("nfc_div", "ahb", CCM_PCDR0, 6, 4); clk[per1_div] = imx_clk_divider("per1_div", "mpll_main2", CCM_PCDR1, 0, 6); clk[per2_div] = imx_clk_divider("per2_div", "mpll_main2", CCM_PCDR1, 8, 6); clk[per3_div] = imx_clk_divider("per3_div", "mpll_main2", CCM_PCDR1, 16, 6); clk[per4_div] = imx_clk_divider("per4_div", "mpll_main2", CCM_PCDR1, 24, 6); clk[vpu_sel] = imx_clk_mux("vpu_sel", CCM_CSCR, 21, 1, vpu_sel_clks, ARRAY_SIZE(vpu_sel_clks)); clk[vpu_div] = imx_clk_divider("vpu_div", "vpu_sel", CCM_PCDR0, 10, 6); clk[usb_div] = imx_clk_divider("usb_div", "spll_gate", CCM_CSCR, 28, 3); clk[cpu_sel] = imx_clk_mux("cpu_sel", CCM_CSCR, 15, 1, cpu_sel_clks, ARRAY_SIZE(cpu_sel_clks)); clk[clko_sel] = imx_clk_mux("clko_sel", CCM_CCSR, 0, 5, clko_sel_clks, ARRAY_SIZE(clko_sel_clks)); if (mx27_revision() >= IMX_CHIP_REVISION_2_0) clk[cpu_div] = imx_clk_divider("cpu_div", "cpu_sel", CCM_CSCR, 12, 2); else clk[cpu_div] = imx_clk_divider("cpu_div", "cpu_sel", CCM_CSCR, 13, 3); clk[clko_div] = imx_clk_divider("clko_div", "clko_sel", CCM_PCDR0, 22, 3); clk[ssi1_sel] = imx_clk_mux("ssi1_sel", CCM_CSCR, 22, 1, ssi_sel_clks, ARRAY_SIZE(ssi_sel_clks)); clk[ssi2_sel] = imx_clk_mux("ssi2_sel", CCM_CSCR, 23, 1, ssi_sel_clks, ARRAY_SIZE(ssi_sel_clks)); clk[ssi1_div] = imx_clk_divider("ssi1_div", "ssi1_sel", CCM_PCDR0, 16, 6); clk[ssi2_div] = imx_clk_divider("ssi2_div", "ssi2_sel", CCM_PCDR0, 26, 6); clk[clko_en] = imx_clk_gate("clko_en", "clko_div", CCM_PCCR0, 0); clk[ssi2_ipg_gate] = imx_clk_gate("ssi2_ipg_gate", "ipg", CCM_PCCR0, 0); clk[ssi1_ipg_gate] = imx_clk_gate("ssi1_ipg_gate", "ipg", CCM_PCCR0, 1); clk[slcdc_ipg_gate] = imx_clk_gate("slcdc_ipg_gate", "ipg", CCM_PCCR0, 2); clk[sdhc3_ipg_gate] = imx_clk_gate("sdhc3_ipg_gate", "ipg", CCM_PCCR0, 3); clk[sdhc2_ipg_gate] = imx_clk_gate("sdhc2_ipg_gate", "ipg", CCM_PCCR0, 4); clk[sdhc1_ipg_gate] = imx_clk_gate("sdhc1_ipg_gate", "ipg", CCM_PCCR0, 5); clk[scc_ipg_gate] = imx_clk_gate("scc_ipg_gate", "ipg", CCM_PCCR0, 6); clk[sahara_ipg_gate] = imx_clk_gate("sahara_ipg_gate", "ipg", CCM_PCCR0, 7); clk[rtic_ipg_gate] = imx_clk_gate("rtic_ipg_gate", "ipg", CCM_PCCR0, 8); clk[rtc_ipg_gate] = imx_clk_gate("rtc_ipg_gate", "ipg", CCM_PCCR0, 9); clk[pwm_ipg_gate] = imx_clk_gate("pwm_ipg_gate", "ipg", CCM_PCCR0, 11); clk[owire_ipg_gate] = imx_clk_gate("owire_ipg_gate", "ipg", CCM_PCCR0, 12); clk[mshc_ipg_gate] = imx_clk_gate("mshc_ipg_gate", "ipg", CCM_PCCR0, 13); clk[lcdc_ipg_gate] = imx_clk_gate("lcdc_ipg_gate", "ipg", CCM_PCCR0, 14); clk[kpp_ipg_gate] = imx_clk_gate("kpp_ipg_gate", "ipg", CCM_PCCR0, 15); clk[iim_ipg_gate] = imx_clk_gate("iim_ipg_gate", "ipg", CCM_PCCR0, 16); clk[i2c2_ipg_gate] = imx_clk_gate("i2c2_ipg_gate", "ipg", CCM_PCCR0, 17); clk[i2c1_ipg_gate] = imx_clk_gate("i2c1_ipg_gate", "ipg", CCM_PCCR0, 18); clk[gpt6_ipg_gate] = imx_clk_gate("gpt6_ipg_gate", "ipg", CCM_PCCR0, 19); clk[gpt5_ipg_gate] = imx_clk_gate("gpt5_ipg_gate", "ipg", CCM_PCCR0, 20); clk[gpt4_ipg_gate] = imx_clk_gate("gpt4_ipg_gate", "ipg", CCM_PCCR0, 21); clk[gpt3_ipg_gate] = imx_clk_gate("gpt3_ipg_gate", "ipg", CCM_PCCR0, 22); clk[gpt2_ipg_gate] = imx_clk_gate("gpt2_ipg_gate", "ipg", CCM_PCCR0, 23); clk[gpt1_ipg_gate] = imx_clk_gate("gpt1_ipg_gate", "ipg", CCM_PCCR0, 24); clk[gpio_ipg_gate] = imx_clk_gate("gpio_ipg_gate", "ipg", CCM_PCCR0, 25); clk[fec_ipg_gate] = imx_clk_gate("fec_ipg_gate", "ipg", CCM_PCCR0, 26); clk[emma_ipg_gate] = imx_clk_gate("emma_ipg_gate", "ipg", CCM_PCCR0, 27); clk[dma_ipg_gate] = imx_clk_gate("dma_ipg_gate", "ipg", CCM_PCCR0, 28); clk[cspi3_ipg_gate] = imx_clk_gate("cspi3_ipg_gate", "ipg", CCM_PCCR0, 29); clk[cspi2_ipg_gate] = imx_clk_gate("cspi2_ipg_gate", "ipg", CCM_PCCR0, 30); clk[cspi1_ipg_gate] = imx_clk_gate("cspi1_ipg_gate", "ipg", CCM_PCCR0, 31); clk[mshc_baud_gate] = imx_clk_gate("mshc_baud_gate", "mshc_div", CCM_PCCR1, 2); clk[nfc_baud_gate] = imx_clk_gate("nfc_baud_gate", "nfc_div", CCM_PCCR1, 3); clk[ssi2_baud_gate] = imx_clk_gate("ssi2_baud_gate", "ssi2_div", CCM_PCCR1, 4); clk[ssi1_baud_gate] = imx_clk_gate("ssi1_baud_gate", "ssi1_div", CCM_PCCR1, 5); clk[vpu_baud_gate] = imx_clk_gate("vpu_baud_gate", "vpu_div", CCM_PCCR1, 6); clk[per4_gate] = imx_clk_gate("per4_gate", "per4_div", CCM_PCCR1, 7); clk[per3_gate] = imx_clk_gate("per3_gate", "per3_div", CCM_PCCR1, 8); clk[per2_gate] = imx_clk_gate("per2_gate", "per2_div", CCM_PCCR1, 9); clk[per1_gate] = imx_clk_gate("per1_gate", "per1_div", CCM_PCCR1, 10); clk[usb_ahb_gate] = imx_clk_gate("usb_ahb_gate", "ahb", CCM_PCCR1, 11); clk[slcdc_ahb_gate] = imx_clk_gate("slcdc_ahb_gate", "ahb", CCM_PCCR1, 12); clk[sahara_ahb_gate] = imx_clk_gate("sahara_ahb_gate", "ahb", CCM_PCCR1, 13); clk[rtic_ahb_gate] = imx_clk_gate("rtic_ahb_gate", "ahb", CCM_PCCR1, 14); clk[lcdc_ahb_gate] = imx_clk_gate("lcdc_ahb_gate", "ahb", CCM_PCCR1, 15); clk[vpu_ahb_gate] = imx_clk_gate("vpu_ahb_gate", "ahb", CCM_PCCR1, 16); clk[fec_ahb_gate] = imx_clk_gate("fec_ahb_gate", "ahb", CCM_PCCR1, 17); clk[emma_ahb_gate] = imx_clk_gate("emma_ahb_gate", "ahb", CCM_PCCR1, 18); clk[emi_ahb_gate] = imx_clk_gate("emi_ahb_gate", "ahb", CCM_PCCR1, 19); clk[dma_ahb_gate] = imx_clk_gate("dma_ahb_gate", "ahb", CCM_PCCR1, 20); clk[csi_ahb_gate] = imx_clk_gate("csi_ahb_gate", "ahb", CCM_PCCR1, 21); clk[brom_ahb_gate] = imx_clk_gate("brom_ahb_gate", "ahb", CCM_PCCR1, 22); clk[ata_ahb_gate] = imx_clk_gate("ata_ahb_gate", "ahb", CCM_PCCR1, 23); clk[wdog_ipg_gate] = imx_clk_gate("wdog_ipg_gate", "ipg", CCM_PCCR1, 24); clk[usb_ipg_gate] = imx_clk_gate("usb_ipg_gate", "ipg", CCM_PCCR1, 25); clk[uart6_ipg_gate] = imx_clk_gate("uart6_ipg_gate", "ipg", CCM_PCCR1, 26); clk[uart5_ipg_gate] = imx_clk_gate("uart5_ipg_gate", "ipg", CCM_PCCR1, 27); clk[uart4_ipg_gate] = imx_clk_gate("uart4_ipg_gate", "ipg", CCM_PCCR1, 28); clk[uart3_ipg_gate] = imx_clk_gate("uart3_ipg_gate", "ipg", CCM_PCCR1, 29); clk[uart2_ipg_gate] = imx_clk_gate("uart2_ipg_gate", "ipg", CCM_PCCR1, 30); clk[uart1_ipg_gate] = imx_clk_gate("uart1_ipg_gate", "ipg", CCM_PCCR1, 31); imx_check_clocks(clk, ARRAY_SIZE(clk)); clk_register_clkdev(clk[cpu_div], NULL, "cpu0"); clk_prepare_enable(clk[emi_ahb_gate]); imx_print_silicon_rev("i.MX27", mx27_revision()); } int __init mx27_clocks_init(unsigned long fref) { ccm = ioremap(MX27_CCM_BASE_ADDR, SZ_4K); _mx27_clocks_init(fref); clk_register_clkdev(clk[uart1_ipg_gate], "ipg", "imx21-uart.0"); clk_register_clkdev(clk[per1_gate], "per", "imx21-uart.0"); clk_register_clkdev(clk[uart2_ipg_gate], "ipg", "imx21-uart.1"); clk_register_clkdev(clk[per1_gate], "per", "imx21-uart.1"); clk_register_clkdev(clk[uart3_ipg_gate], "ipg", "imx21-uart.2"); clk_register_clkdev(clk[per1_gate], "per", "imx21-uart.2"); clk_register_clkdev(clk[uart4_ipg_gate], "ipg", "imx21-uart.3"); clk_register_clkdev(clk[per1_gate], "per", "imx21-uart.3"); clk_register_clkdev(clk[uart5_ipg_gate], "ipg", "imx21-uart.4"); clk_register_clkdev(clk[per1_gate], "per", "imx21-uart.4"); clk_register_clkdev(clk[uart6_ipg_gate], "ipg", "imx21-uart.5"); clk_register_clkdev(clk[per1_gate], "per", "imx21-uart.5"); clk_register_clkdev(clk[gpt1_ipg_gate], "ipg", "imx-gpt.0"); clk_register_clkdev(clk[per1_gate], "per", "imx-gpt.0"); clk_register_clkdev(clk[per2_gate], "per", "imx21-mmc.0"); clk_register_clkdev(clk[sdhc1_ipg_gate], "ipg", "imx21-mmc.0"); clk_register_clkdev(clk[per2_gate], "per", "imx21-mmc.1"); clk_register_clkdev(clk[sdhc2_ipg_gate], "ipg", "imx21-mmc.1"); clk_register_clkdev(clk[per2_gate], "per", "imx21-mmc.2"); clk_register_clkdev(clk[sdhc2_ipg_gate], "ipg", "imx21-mmc.2"); clk_register_clkdev(clk[per2_gate], "per", "imx27-cspi.0"); clk_register_clkdev(clk[cspi1_ipg_gate], "ipg", "imx27-cspi.0"); clk_register_clkdev(clk[per2_gate], "per", "imx27-cspi.1"); clk_register_clkdev(clk[cspi2_ipg_gate], "ipg", "imx27-cspi.1"); clk_register_clkdev(clk[per2_gate], "per", "imx27-cspi.2"); clk_register_clkdev(clk[cspi3_ipg_gate], "ipg", "imx27-cspi.2"); clk_register_clkdev(clk[per3_gate], "per", "imx21-fb.0"); clk_register_clkdev(clk[lcdc_ipg_gate], "ipg", "imx21-fb.0"); clk_register_clkdev(clk[lcdc_ahb_gate], "ahb", "imx21-fb.0"); clk_register_clkdev(clk[csi_ahb_gate], "ahb", "imx27-camera.0"); clk_register_clkdev(clk[per4_gate], "per", "imx27-camera.0"); clk_register_clkdev(clk[usb_div], "per", "imx-udc-mx27"); clk_register_clkdev(clk[usb_ipg_gate], "ipg", "imx-udc-mx27"); clk_register_clkdev(clk[usb_ahb_gate], "ahb", "imx-udc-mx27"); clk_register_clkdev(clk[usb_div], "per", "mxc-ehci.0"); clk_register_clkdev(clk[usb_ipg_gate], "ipg", "mxc-ehci.0"); clk_register_clkdev(clk[usb_ahb_gate], "ahb", "mxc-ehci.0"); clk_register_clkdev(clk[usb_div], "per", "mxc-ehci.1"); clk_register_clkdev(clk[usb_ipg_gate], "ipg", "mxc-ehci.1"); clk_register_clkdev(clk[usb_ahb_gate], "ahb", "mxc-ehci.1"); clk_register_clkdev(clk[usb_div], "per", "mxc-ehci.2"); clk_register_clkdev(clk[usb_ipg_gate], "ipg", "mxc-ehci.2"); clk_register_clkdev(clk[usb_ahb_gate], "ahb", "mxc-ehci.2"); clk_register_clkdev(clk[ssi1_ipg_gate], NULL, "imx-ssi.0"); clk_register_clkdev(clk[ssi2_ipg_gate], NULL, "imx-ssi.1"); clk_register_clkdev(clk[nfc_baud_gate], NULL, "imx27-nand.0"); clk_register_clkdev(clk[vpu_baud_gate], "per", "coda-imx27.0"); clk_register_clkdev(clk[vpu_ahb_gate], "ahb", "coda-imx27.0"); clk_register_clkdev(clk[dma_ahb_gate], "ahb", "imx27-dma"); clk_register_clkdev(clk[dma_ipg_gate], "ipg", "imx27-dma"); clk_register_clkdev(clk[fec_ipg_gate], "ipg", "imx27-fec.0"); clk_register_clkdev(clk[fec_ahb_gate], "ahb", "imx27-fec.0"); clk_register_clkdev(clk[wdog_ipg_gate], NULL, "imx2-wdt.0"); clk_register_clkdev(clk[i2c1_ipg_gate], NULL, "imx21-i2c.0"); clk_register_clkdev(clk[i2c2_ipg_gate], NULL, "imx21-i2c.1"); clk_register_clkdev(clk[owire_ipg_gate], NULL, "mxc_w1.0"); clk_register_clkdev(clk[kpp_ipg_gate], NULL, "imx-keypad"); clk_register_clkdev(clk[emma_ahb_gate], "emma-ahb", "imx27-camera.0"); clk_register_clkdev(clk[emma_ipg_gate], "emma-ipg", "imx27-camera.0"); clk_register_clkdev(clk[emma_ahb_gate], "ahb", "m2m-emmaprp.0"); clk_register_clkdev(clk[emma_ipg_gate], "ipg", "m2m-emmaprp.0"); mxc_timer_init(MX27_IO_ADDRESS(MX27_GPT1_BASE_ADDR), MX27_INT_GPT1); return 0; } static void __init mx27_clocks_init_dt(struct device_node *np) { struct device_node *refnp; u32 fref = 26000000; /* default */ for_each_compatible_node(refnp, NULL, "fixed-clock") { if (!of_device_is_compatible(refnp, "fsl,imx-osc26m")) continue; if (!of_property_read_u32(refnp, "clock-frequency", &fref)) break; } ccm = of_iomap(np, 0); _mx27_clocks_init(fref); clk_data.clks = clk; clk_data.clk_num = ARRAY_SIZE(clk); of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data); mxc_timer_init_dt(of_find_compatible_node(NULL, NULL, "fsl,imx1-gpt")); } CLK_OF_DECLARE(imx27_ccm, "fsl,imx27-ccm", mx27_clocks_init_dt);