/* * Clock definitions for u8500 platform. * * Copyright (C) 2012 ST-Ericsson SA * Author: Ulf Hansson * * License terms: GNU General Public License (GPL) version 2 */ #include #include #include #include #include #include #include "clk.h" #define PRCC_NUM_PERIPH_CLUSTERS 6 #define PRCC_PERIPHS_PER_CLUSTER 32 static struct clk *prcmu_clk[PRCMU_NUM_CLKS]; static struct clk *prcc_pclk[(PRCC_NUM_PERIPH_CLUSTERS + 1) * PRCC_PERIPHS_PER_CLUSTER]; #define PRCC_SHOW(clk, base, bit) \ clk[(base * PRCC_PERIPHS_PER_CLUSTER) + bit] #define PRCC_PCLK_STORE(clk, base, bit) \ prcc_pclk[(base * PRCC_PERIPHS_PER_CLUSTER) + bit] = clk struct clk *ux500_twocell_get(struct of_phandle_args *clkspec, void *data) { struct clk **clk_data = data; unsigned int base, bit; if (clkspec->args_count != 2) return ERR_PTR(-EINVAL); base = clkspec->args[0]; bit = clkspec->args[1]; if (base != 1 && base != 2 && base != 3 && base != 5 && base != 6) { pr_err("%s: invalid PRCC base %d\n", __func__, base); return ERR_PTR(-EINVAL); } return PRCC_SHOW(clk_data, base, bit); } static const struct of_device_id u8500_clk_of_match[] = { { .compatible = "stericsson,u8500-clks", }, { }, }; void u8500_of_clk_init(u32 clkrst1_base, u32 clkrst2_base, u32 clkrst3_base, u32 clkrst5_base, u32 clkrst6_base) { struct prcmu_fw_version *fw_version; struct device_node *np = NULL; struct device_node *child = NULL; const char *sgaclk_parent = NULL; struct clk *clk; if (of_have_populated_dt()) np = of_find_matching_node(NULL, u8500_clk_of_match); if (!np) { pr_err("Either DT or U8500 Clock node not found\n"); return; } /* Clock sources */ clk = clk_reg_prcmu_gate("soc0_pll", NULL, PRCMU_PLLSOC0, CLK_IS_ROOT|CLK_IGNORE_UNUSED); prcmu_clk[PRCMU_PLLSOC0] = clk; clk = clk_reg_prcmu_gate("soc1_pll", NULL, PRCMU_PLLSOC1, CLK_IS_ROOT|CLK_IGNORE_UNUSED); prcmu_clk[PRCMU_PLLSOC1] = clk; clk = clk_reg_prcmu_gate("ddr_pll", NULL, PRCMU_PLLDDR, CLK_IS_ROOT|CLK_IGNORE_UNUSED); prcmu_clk[PRCMU_PLLDDR] = clk; /* FIXME: Add sys, ulp and int clocks here. */ clk = clk_register_fixed_rate(NULL, "rtc32k", "NULL", CLK_IS_ROOT|CLK_IGNORE_UNUSED, 32768); /* PRCMU clocks */ fw_version = prcmu_get_fw_version(); if (fw_version != NULL) { switch (fw_version->project) { case PRCMU_FW_PROJECT_U8500_C2: case PRCMU_FW_PROJECT_U8520: case PRCMU_FW_PROJECT_U8420: sgaclk_parent = "soc0_pll"; break; default: break; } } if (sgaclk_parent) clk = clk_reg_prcmu_gate("sgclk", sgaclk_parent, PRCMU_SGACLK, 0); else clk = clk_reg_prcmu_gate("sgclk", NULL, PRCMU_SGACLK, CLK_IS_ROOT); prcmu_clk[PRCMU_SGACLK] = clk; clk = clk_reg_prcmu_gate("uartclk", NULL, PRCMU_UARTCLK, CLK_IS_ROOT); prcmu_clk[PRCMU_UARTCLK] = clk; clk = clk_reg_prcmu_gate("msp02clk", NULL, PRCMU_MSP02CLK, CLK_IS_ROOT); prcmu_clk[PRCMU_MSP02CLK] = clk; clk = clk_reg_prcmu_gate("msp1clk", NULL, PRCMU_MSP1CLK, CLK_IS_ROOT); prcmu_clk[PRCMU_MSP1CLK] = clk; clk = clk_reg_prcmu_gate("i2cclk", NULL, PRCMU_I2CCLK, CLK_IS_ROOT); prcmu_clk[PRCMU_I2CCLK] = clk; clk = clk_reg_prcmu_gate("slimclk", NULL, PRCMU_SLIMCLK, CLK_IS_ROOT); prcmu_clk[PRCMU_SLIMCLK] = clk; clk = clk_reg_prcmu_gate("per1clk", NULL, PRCMU_PER1CLK, CLK_IS_ROOT); prcmu_clk[PRCMU_PER1CLK] = clk; clk = clk_reg_prcmu_gate("per2clk", NULL, PRCMU_PER2CLK, CLK_IS_ROOT); prcmu_clk[PRCMU_PER2CLK] = clk; clk = clk_reg_prcmu_gate("per3clk", NULL, PRCMU_PER3CLK, CLK_IS_ROOT); prcmu_clk[PRCMU_PER3CLK] = clk; clk = clk_reg_prcmu_gate("per5clk", NULL, PRCMU_PER5CLK, CLK_IS_ROOT); prcmu_clk[PRCMU_PER5CLK] = clk; clk = clk_reg_prcmu_gate("per6clk", NULL, PRCMU_PER6CLK, CLK_IS_ROOT); prcmu_clk[PRCMU_PER6CLK] = clk; clk = clk_reg_prcmu_gate("per7clk", NULL, PRCMU_PER7CLK, CLK_IS_ROOT); prcmu_clk[PRCMU_PER7CLK] = clk; clk = clk_reg_prcmu_scalable("lcdclk", NULL, PRCMU_LCDCLK, 0, CLK_IS_ROOT|CLK_SET_RATE_GATE); prcmu_clk[PRCMU_LCDCLK] = clk; clk = clk_reg_prcmu_opp_gate("bmlclk", NULL, PRCMU_BMLCLK, CLK_IS_ROOT); prcmu_clk[PRCMU_BMLCLK] = clk; clk = clk_reg_prcmu_scalable("hsitxclk", NULL, PRCMU_HSITXCLK, 0, CLK_IS_ROOT|CLK_SET_RATE_GATE); prcmu_clk[PRCMU_HSITXCLK] = clk; clk = clk_reg_prcmu_scalable("hsirxclk", NULL, PRCMU_HSIRXCLK, 0, CLK_IS_ROOT|CLK_SET_RATE_GATE); prcmu_clk[PRCMU_HSIRXCLK] = clk; clk = clk_reg_prcmu_scalable("hdmiclk", NULL, PRCMU_HDMICLK, 0, CLK_IS_ROOT|CLK_SET_RATE_GATE); prcmu_clk[PRCMU_HDMICLK] = clk; clk = clk_reg_prcmu_gate("apeatclk", NULL, PRCMU_APEATCLK, CLK_IS_ROOT); prcmu_clk[PRCMU_APEATCLK] = clk; clk = clk_reg_prcmu_gate("apetraceclk", NULL, PRCMU_APETRACECLK, CLK_IS_ROOT); prcmu_clk[PRCMU_APETRACECLK] = clk; clk = clk_reg_prcmu_gate("mcdeclk", NULL, PRCMU_MCDECLK, CLK_IS_ROOT); prcmu_clk[PRCMU_MCDECLK] = clk; clk = clk_reg_prcmu_opp_gate("ipi2cclk", NULL, PRCMU_IPI2CCLK, CLK_IS_ROOT); prcmu_clk[PRCMU_IPI2CCLK] = clk; clk = clk_reg_prcmu_gate("dsialtclk", NULL, PRCMU_DSIALTCLK, CLK_IS_ROOT); prcmu_clk[PRCMU_DSIALTCLK] = clk; clk = clk_reg_prcmu_gate("dmaclk", NULL, PRCMU_DMACLK, CLK_IS_ROOT); prcmu_clk[PRCMU_DMACLK] = clk; clk = clk_reg_prcmu_gate("b2r2clk", NULL, PRCMU_B2R2CLK, CLK_IS_ROOT); prcmu_clk[PRCMU_B2R2CLK] = clk; clk = clk_reg_prcmu_scalable("tvclk", NULL, PRCMU_TVCLK, 0, CLK_IS_ROOT|CLK_SET_RATE_GATE); prcmu_clk[PRCMU_TVCLK] = clk; clk = clk_reg_prcmu_gate("sspclk", NULL, PRCMU_SSPCLK, CLK_IS_ROOT); prcmu_clk[PRCMU_SSPCLK] = clk; clk = clk_reg_prcmu_gate("rngclk", NULL, PRCMU_RNGCLK, CLK_IS_ROOT); prcmu_clk[PRCMU_RNGCLK] = clk; clk = clk_reg_prcmu_gate("uiccclk", NULL, PRCMU_UICCCLK, CLK_IS_ROOT); prcmu_clk[PRCMU_UICCCLK] = clk; clk = clk_reg_prcmu_gate("timclk", NULL, PRCMU_TIMCLK, CLK_IS_ROOT); prcmu_clk[PRCMU_TIMCLK] = clk; clk = clk_reg_prcmu_opp_volt_scalable("sdmmcclk", NULL, PRCMU_SDMMCCLK, 100000000, CLK_IS_ROOT|CLK_SET_RATE_GATE); prcmu_clk[PRCMU_SDMMCCLK] = clk; clk = clk_reg_prcmu_scalable("dsi_pll", "hdmiclk", PRCMU_PLLDSI, 0, CLK_SET_RATE_GATE); prcmu_clk[PRCMU_PLLDSI] = clk; clk = clk_reg_prcmu_scalable("dsi0clk", "dsi_pll", PRCMU_DSI0CLK, 0, CLK_SET_RATE_GATE); prcmu_clk[PRCMU_DSI0CLK] = clk; clk = clk_reg_prcmu_scalable("dsi1clk", "dsi_pll", PRCMU_DSI1CLK, 0, CLK_SET_RATE_GATE); prcmu_clk[PRCMU_DSI1CLK] = clk; clk = clk_reg_prcmu_scalable("dsi0escclk", "tvclk", PRCMU_DSI0ESCCLK, 0, CLK_SET_RATE_GATE); prcmu_clk[PRCMU_DSI0ESCCLK] = clk; clk = clk_reg_prcmu_scalable("dsi1escclk", "tvclk", PRCMU_DSI1ESCCLK, 0, CLK_SET_RATE_GATE); prcmu_clk[PRCMU_DSI1ESCCLK] = clk; clk = clk_reg_prcmu_scalable("dsi2escclk", "tvclk", PRCMU_DSI2ESCCLK, 0, CLK_SET_RATE_GATE); prcmu_clk[PRCMU_DSI2ESCCLK] = clk; clk = clk_reg_prcmu_scalable_rate("armss", NULL, PRCMU_ARMSS, 0, CLK_IS_ROOT|CLK_IGNORE_UNUSED); clk = clk_register_fixed_factor(NULL, "smp_twd", "armss", CLK_IGNORE_UNUSED, 1, 2); /* * FIXME: Add special handled PRCMU clocks here: * 1. clkout0yuv, use PRCMU as parent + need regulator + pinctrl. * 2. ab9540_clkout1yuv, see clkout0yuv */ /* PRCC P-clocks */ clk = clk_reg_prcc_pclk("p1_pclk0", "per1clk", clkrst1_base, BIT(0), 0); PRCC_PCLK_STORE(clk, 1, 0); clk = clk_reg_prcc_pclk("p1_pclk1", "per1clk", clkrst1_base, BIT(1), 0); PRCC_PCLK_STORE(clk, 1, 1); clk = clk_reg_prcc_pclk("p1_pclk2", "per1clk", clkrst1_base, BIT(2), 0); PRCC_PCLK_STORE(clk, 1, 2); clk = clk_reg_prcc_pclk("p1_pclk3", "per1clk", clkrst1_base, BIT(3), 0); PRCC_PCLK_STORE(clk, 1, 3); clk = clk_reg_prcc_pclk("p1_pclk4", "per1clk", clkrst1_base, BIT(4), 0); PRCC_PCLK_STORE(clk, 1, 4); clk = clk_reg_prcc_pclk("p1_pclk5", "per1clk", clkrst1_base, BIT(5), 0); PRCC_PCLK_STORE(clk, 1, 5); clk = clk_reg_prcc_pclk("p1_pclk6", "per1clk", clkrst1_base, BIT(6), 0); PRCC_PCLK_STORE(clk, 1, 6); clk = clk_reg_prcc_pclk("p1_pclk7", "per1clk", clkrst1_base, BIT(7), 0); PRCC_PCLK_STORE(clk, 1, 7); clk = clk_reg_prcc_pclk("p1_pclk8", "per1clk", clkrst1_base, BIT(8), 0); PRCC_PCLK_STORE(clk, 1, 8); clk = clk_reg_prcc_pclk("p1_pclk9", "per1clk", clkrst1_base, BIT(9), 0); PRCC_PCLK_STORE(clk, 1, 9); clk = clk_reg_prcc_pclk("p1_pclk10", "per1clk", clkrst1_base, BIT(10), 0); PRCC_PCLK_STORE(clk, 1, 10); clk = clk_reg_prcc_pclk("p1_pclk11", "per1clk", clkrst1_base, BIT(11), 0); PRCC_PCLK_STORE(clk, 1, 11); clk = clk_reg_prcc_pclk("p2_pclk0", "per2clk", clkrst2_base, BIT(0), 0); PRCC_PCLK_STORE(clk, 2, 0); clk = clk_reg_prcc_pclk("p2_pclk1", "per2clk", clkrst2_base, BIT(1), 0); PRCC_PCLK_STORE(clk, 2, 1); clk = clk_reg_prcc_pclk("p2_pclk2", "per2clk", clkrst2_base, BIT(2), 0); PRCC_PCLK_STORE(clk, 2, 2); clk = clk_reg_prcc_pclk("p2_pclk3", "per2clk", clkrst2_base, BIT(3), 0); PRCC_PCLK_STORE(clk, 2, 3); clk = clk_reg_prcc_pclk("p2_pclk4", "per2clk", clkrst2_base, BIT(4), 0); PRCC_PCLK_STORE(clk, 2, 4); clk = clk_reg_prcc_pclk("p2_pclk5", "per2clk", clkrst2_base, BIT(5), 0); PRCC_PCLK_STORE(clk, 2, 5); clk = clk_reg_prcc_pclk("p2_pclk6", "per2clk", clkrst2_base, BIT(6), 0); PRCC_PCLK_STORE(clk, 2, 6); clk = clk_reg_prcc_pclk("p2_pclk7", "per2clk", clkrst2_base, BIT(7), 0); PRCC_PCLK_STORE(clk, 2, 7); clk = clk_reg_prcc_pclk("p2_pclk8", "per2clk", clkrst2_base, BIT(8), 0); PRCC_PCLK_STORE(clk, 2, 8); clk = clk_reg_prcc_pclk("p2_pclk9", "per2clk", clkrst2_base, BIT(9), 0); PRCC_PCLK_STORE(clk, 2, 9); clk = clk_reg_prcc_pclk("p2_pclk10", "per2clk", clkrst2_base, BIT(10), 0); PRCC_PCLK_STORE(clk, 2, 10); clk = clk_reg_prcc_pclk("p2_pclk11", "per2clk", clkrst2_base, BIT(11), 0); PRCC_PCLK_STORE(clk, 2, 1); clk = clk_reg_prcc_pclk("p2_pclk12", "per2clk", clkrst2_base, BIT(12), 0); PRCC_PCLK_STORE(clk, 2, 12); clk = clk_reg_prcc_pclk("p3_pclk0", "per3clk", clkrst3_base, BIT(0), 0); PRCC_PCLK_STORE(clk, 3, 0); clk = clk_reg_prcc_pclk("p3_pclk1", "per3clk", clkrst3_base, BIT(1), 0); PRCC_PCLK_STORE(clk, 3, 1); clk = clk_reg_prcc_pclk("p3_pclk2", "per3clk", clkrst3_base, BIT(2), 0); PRCC_PCLK_STORE(clk, 3, 2); clk = clk_reg_prcc_pclk("p3_pclk3", "per3clk", clkrst3_base, BIT(3), 0); PRCC_PCLK_STORE(clk, 3, 3); clk = clk_reg_prcc_pclk("p3_pclk4", "per3clk", clkrst3_base, BIT(4), 0); PRCC_PCLK_STORE(clk, 3, 4); clk = clk_reg_prcc_pclk("p3_pclk5", "per3clk", clkrst3_base, BIT(5), 0); PRCC_PCLK_STORE(clk, 3, 5); clk = clk_reg_prcc_pclk("p3_pclk6", "per3clk", clkrst3_base, BIT(6), 0); PRCC_PCLK_STORE(clk, 3, 6); clk = clk_reg_prcc_pclk("p3_pclk7", "per3clk", clkrst3_base, BIT(7), 0); PRCC_PCLK_STORE(clk, 3, 7); clk = clk_reg_prcc_pclk("p3_pclk8", "per3clk", clkrst3_base, BIT(8), 0); PRCC_PCLK_STORE(clk, 3, 8); clk = clk_reg_prcc_pclk("p5_pclk0", "per5clk", clkrst5_base, BIT(0), 0); PRCC_PCLK_STORE(clk, 5, 0); clk = clk_reg_prcc_pclk("p5_pclk1", "per5clk", clkrst5_base, BIT(1), 0); PRCC_PCLK_STORE(clk, 5, 1); clk = clk_reg_prcc_pclk("p6_pclk0", "per6clk", clkrst6_base, BIT(0), 0); PRCC_PCLK_STORE(clk, 6, 0); clk = clk_reg_prcc_pclk("p6_pclk1", "per6clk", clkrst6_base, BIT(1), 0); PRCC_PCLK_STORE(clk, 6, 1); clk = clk_reg_prcc_pclk("p6_pclk2", "per6clk", clkrst6_base, BIT(2), 0); PRCC_PCLK_STORE(clk, 6, 2); clk = clk_reg_prcc_pclk("p6_pclk3", "per6clk", clkrst6_base, BIT(3), 0); PRCC_PCLK_STORE(clk, 6, 3); clk = clk_reg_prcc_pclk("p6_pclk4", "per6clk", clkrst6_base, BIT(4), 0); PRCC_PCLK_STORE(clk, 6, 4); clk = clk_reg_prcc_pclk("p6_pclk5", "per6clk", clkrst6_base, BIT(5), 0); PRCC_PCLK_STORE(clk, 6, 5); clk = clk_reg_prcc_pclk("p6_pclk6", "per6clk", clkrst6_base, BIT(6), 0); PRCC_PCLK_STORE(clk, 6, 6); clk = clk_reg_prcc_pclk("p6_pclk7", "per6clk", clkrst6_base, BIT(7), 0); PRCC_PCLK_STORE(clk, 6, 7); /* PRCC K-clocks * * FIXME: Some drivers requires PERPIH[n| to be automatically enabled * by enabling just the K-clock, even if it is not a valid parent to * the K-clock. Until drivers get fixed we might need some kind of * "parent muxed join". */ /* Periph1 */ clk = clk_reg_prcc_kclk("p1_uart0_kclk", "uartclk", clkrst1_base, BIT(0), CLK_SET_RATE_GATE); clk = clk_reg_prcc_kclk("p1_uart1_kclk", "uartclk", clkrst1_base, BIT(1), CLK_SET_RATE_GATE); clk = clk_reg_prcc_kclk("p1_i2c1_kclk", "i2cclk", clkrst1_base, BIT(2), CLK_SET_RATE_GATE); clk = clk_reg_prcc_kclk("p1_msp0_kclk", "msp02clk", clkrst1_base, BIT(3), CLK_SET_RATE_GATE); clk = clk_reg_prcc_kclk("p1_msp1_kclk", "msp1clk", clkrst1_base, BIT(4), CLK_SET_RATE_GATE); clk = clk_reg_prcc_kclk("p1_sdi0_kclk", "sdmmcclk", clkrst1_base, BIT(5), CLK_SET_RATE_GATE); clk = clk_reg_prcc_kclk("p1_i2c2_kclk", "i2cclk", clkrst1_base, BIT(6), CLK_SET_RATE_GATE); clk = clk_reg_prcc_kclk("p1_slimbus0_kclk", "slimclk", clkrst1_base, BIT(8), CLK_SET_RATE_GATE); clk = clk_reg_prcc_kclk("p1_i2c4_kclk", "i2cclk", clkrst1_base, BIT(9), CLK_SET_RATE_GATE); clk = clk_reg_prcc_kclk("p1_msp3_kclk", "msp1clk", clkrst1_base, BIT(10), CLK_SET_RATE_GATE); /* Periph2 */ clk = clk_reg_prcc_kclk("p2_i2c3_kclk", "i2cclk", clkrst2_base, BIT(0), CLK_SET_RATE_GATE); clk = clk_reg_prcc_kclk("p2_sdi4_kclk", "sdmmcclk", clkrst2_base, BIT(2), CLK_SET_RATE_GATE); clk = clk_reg_prcc_kclk("p2_msp2_kclk", "msp02clk", clkrst2_base, BIT(3), CLK_SET_RATE_GATE); clk = clk_reg_prcc_kclk("p2_sdi1_kclk", "sdmmcclk", clkrst2_base, BIT(4), CLK_SET_RATE_GATE); clk = clk_reg_prcc_kclk("p2_sdi3_kclk", "sdmmcclk", clkrst2_base, BIT(5), CLK_SET_RATE_GATE); /* Note that rate is received from parent. */ clk = clk_reg_prcc_kclk("p2_ssirx_kclk", "hsirxclk", clkrst2_base, BIT(6), CLK_SET_RATE_GATE|CLK_SET_RATE_PARENT); clk = clk_reg_prcc_kclk("p2_ssitx_kclk", "hsitxclk", clkrst2_base, BIT(7), CLK_SET_RATE_GATE|CLK_SET_RATE_PARENT); /* Periph3 */ clk = clk_reg_prcc_kclk("p3_ssp0_kclk", "sspclk", clkrst3_base, BIT(1), CLK_SET_RATE_GATE); clk = clk_reg_prcc_kclk("p3_ssp1_kclk", "sspclk", clkrst3_base, BIT(2), CLK_SET_RATE_GATE); clk = clk_reg_prcc_kclk("p3_i2c0_kclk", "i2cclk", clkrst3_base, BIT(3), CLK_SET_RATE_GATE); clk = clk_reg_prcc_kclk("p3_sdi2_kclk", "sdmmcclk", clkrst3_base, BIT(4), CLK_SET_RATE_GATE); clk = clk_reg_prcc_kclk("p3_ske_kclk", "rtc32k", clkrst3_base, BIT(5), CLK_SET_RATE_GATE); clk = clk_reg_prcc_kclk("p3_uart2_kclk", "uartclk", clkrst3_base, BIT(6), CLK_SET_RATE_GATE); clk = clk_reg_prcc_kclk("p3_sdi5_kclk", "sdmmcclk", clkrst3_base, BIT(7), CLK_SET_RATE_GATE); /* Periph6 */ clk = clk_reg_prcc_kclk("p3_rng_kclk", "rngclk", clkrst6_base, BIT(0), CLK_SET_RATE_GATE); for_each_child_of_node(np, child) { static struct clk_onecell_data clk_data; if (!of_node_cmp(child->name, "prcmu-clock")) { clk_data.clks = prcmu_clk; clk_data.clk_num = ARRAY_SIZE(prcmu_clk); of_clk_add_provider(child, of_clk_src_onecell_get, &clk_data); } if (!of_node_cmp(child->name, "prcc-periph-clock")) of_clk_add_provider(child, ux500_twocell_get, prcc_pclk); } }