--- /dev/null
+/*
+ * SPEAr6xx machines clock framework source file
+ *
+ * Copyright (C) 2012 ST Microelectronics
+ * Viresh Kumar <viresh.linux@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/clk.h>
+#include <linux/clkdev.h>
+#include <linux/io.h>
+#include <linux/spinlock_types.h>
+#include "clk.h"
+
+static DEFINE_SPINLOCK(_lock);
+
+#define PLL1_CTR (misc_base + 0x008)
+#define PLL1_FRQ (misc_base + 0x00C)
+#define PLL2_CTR (misc_base + 0x014)
+#define PLL2_FRQ (misc_base + 0x018)
+#define PLL_CLK_CFG (misc_base + 0x020)
+ /* PLL_CLK_CFG register masks */
+ #define MCTR_CLK_SHIFT 28
+ #define MCTR_CLK_MASK 3
+
+#define CORE_CLK_CFG (misc_base + 0x024)
+ /* CORE CLK CFG register masks */
+ #define HCLK_RATIO_SHIFT 10
+ #define HCLK_RATIO_MASK 2
+ #define PCLK_RATIO_SHIFT 8
+ #define PCLK_RATIO_MASK 2
+
+#define PERIP_CLK_CFG (misc_base + 0x028)
+ /* PERIP_CLK_CFG register masks */
+ #define CLCD_CLK_SHIFT 2
+ #define CLCD_CLK_MASK 2
+ #define UART_CLK_SHIFT 4
+ #define UART_CLK_MASK 1
+ #define FIRDA_CLK_SHIFT 5
+ #define FIRDA_CLK_MASK 2
+ #define GPT0_CLK_SHIFT 8
+ #define GPT1_CLK_SHIFT 10
+ #define GPT2_CLK_SHIFT 11
+ #define GPT3_CLK_SHIFT 12
+ #define GPT_CLK_MASK 1
+
+#define PERIP1_CLK_ENB (misc_base + 0x02C)
+ /* PERIP1_CLK_ENB register masks */
+ #define UART0_CLK_ENB 3
+ #define UART1_CLK_ENB 4
+ #define SSP0_CLK_ENB 5
+ #define SSP1_CLK_ENB 6
+ #define I2C_CLK_ENB 7
+ #define JPEG_CLK_ENB 8
+ #define FSMC_CLK_ENB 9
+ #define FIRDA_CLK_ENB 10
+ #define GPT2_CLK_ENB 11
+ #define GPT3_CLK_ENB 12
+ #define GPIO2_CLK_ENB 13
+ #define SSP2_CLK_ENB 14
+ #define ADC_CLK_ENB 15
+ #define GPT1_CLK_ENB 11
+ #define RTC_CLK_ENB 17
+ #define GPIO1_CLK_ENB 18
+ #define DMA_CLK_ENB 19
+ #define SMI_CLK_ENB 21
+ #define CLCD_CLK_ENB 22
+ #define GMAC_CLK_ENB 23
+ #define USBD_CLK_ENB 24
+ #define USBH0_CLK_ENB 25
+ #define USBH1_CLK_ENB 26
+
+#define PRSC0_CLK_CFG (misc_base + 0x044)
+#define PRSC1_CLK_CFG (misc_base + 0x048)
+#define PRSC2_CLK_CFG (misc_base + 0x04C)
+
+#define CLCD_CLK_SYNT (misc_base + 0x05C)
+#define FIRDA_CLK_SYNT (misc_base + 0x060)
+#define UART_CLK_SYNT (misc_base + 0x064)
+
+/* vco rate configuration table, in ascending order of rates */
+static struct pll_rate_tbl pll_rtbl[] = {
+ {.mode = 0, .m = 0x53, .n = 0x0F, .p = 0x1}, /* vco 332 & pll 166 MHz */
+ {.mode = 0, .m = 0x85, .n = 0x0F, .p = 0x1}, /* vco 532 & pll 266 MHz */
+ {.mode = 0, .m = 0xA6, .n = 0x0F, .p = 0x1}, /* vco 664 & pll 332 MHz */
+};
+
+/* aux rate configuration table, in ascending order of rates */
+static struct aux_rate_tbl aux_rtbl[] = {
+ /* For PLL1 = 332 MHz */
+ {.xscale = 2, .yscale = 27, .eq = 0}, /* 12.296 MHz */
+ {.xscale = 2, .yscale = 8, .eq = 0}, /* 41.5 MHz */
+ {.xscale = 2, .yscale = 4, .eq = 0}, /* 83 MHz */
+ {.xscale = 1, .yscale = 2, .eq = 1}, /* 166 MHz */
+};
+
+static const char *clcd_parents[] = { "pll3_clk", "clcd_syn_gclk", };
+static const char *firda_parents[] = { "pll3_clk", "firda_syn_gclk", };
+static const char *uart_parents[] = { "pll3_clk", "uart_syn_gclk", };
+static const char *gpt0_1_parents[] = { "pll3_clk", "gpt0_1_syn_clk", };
+static const char *gpt2_parents[] = { "pll3_clk", "gpt2_syn_clk", };
+static const char *gpt3_parents[] = { "pll3_clk", "gpt3_syn_clk", };
+static const char *ddr_parents[] = { "ahb_clk", "ahbmult2_clk", "none",
+ "pll2_clk", };
+
+/* gpt rate configuration table, in ascending order of rates */
+static struct gpt_rate_tbl gpt_rtbl[] = {
+ /* For pll1 = 332 MHz */
+ {.mscale = 4, .nscale = 0}, /* 41.5 MHz */
+ {.mscale = 2, .nscale = 0}, /* 55.3 MHz */
+ {.mscale = 1, .nscale = 0}, /* 83 MHz */
+};
+
+void __init spear6xx_clk_init(void __iomem *misc_base)
+{
+ struct clk *clk, *clk1;
+
+ clk = clk_register_fixed_rate(NULL, "osc_32k_clk", NULL, CLK_IS_ROOT,
+ 32000);
+ clk_register_clkdev(clk, "osc_32k_clk", NULL);
+
+ clk = clk_register_fixed_rate(NULL, "osc_30m_clk", NULL, CLK_IS_ROOT,
+ 30000000);
+ clk_register_clkdev(clk, "osc_30m_clk", NULL);
+
+ /* clock derived from 32 KHz osc clk */
+ clk = clk_register_gate(NULL, "rtc_spear", "osc_32k_clk", 0,
+ PERIP1_CLK_ENB, RTC_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "rtc-spear");
+
+ /* clock derived from 30 MHz osc clk */
+ clk = clk_register_fixed_rate(NULL, "pll3_clk", "osc_24m_clk", 0,
+ 48000000);
+ clk_register_clkdev(clk, "pll3_clk", NULL);
+
+ clk = clk_register_vco_pll("vco1_clk", "pll1_clk", NULL, "osc_30m_clk",
+ 0, PLL1_CTR, PLL1_FRQ, pll_rtbl, ARRAY_SIZE(pll_rtbl),
+ &_lock, &clk1, NULL);
+ clk_register_clkdev(clk, "vco1_clk", NULL);
+ clk_register_clkdev(clk1, "pll1_clk", NULL);
+
+ clk = clk_register_vco_pll("vco2_clk", "pll2_clk", NULL, "osc_30m_clk",
+ 0, PLL2_CTR, PLL2_FRQ, pll_rtbl, ARRAY_SIZE(pll_rtbl),
+ &_lock, &clk1, NULL);
+ clk_register_clkdev(clk, "vco2_clk", NULL);
+ clk_register_clkdev(clk1, "pll2_clk", NULL);
+
+ clk = clk_register_fixed_factor(NULL, "wdt_clk", "osc_30m_clk", 0, 1,
+ 1);
+ clk_register_clkdev(clk, NULL, "wdt");
+
+ /* clock derived from pll1 clk */
+ clk = clk_register_fixed_factor(NULL, "cpu_clk", "pll1_clk",
+ CLK_SET_RATE_PARENT, 1, 1);
+ clk_register_clkdev(clk, "cpu_clk", NULL);
+
+ clk = clk_register_divider(NULL, "ahb_clk", "pll1_clk",
+ CLK_SET_RATE_PARENT, CORE_CLK_CFG, HCLK_RATIO_SHIFT,
+ HCLK_RATIO_MASK, 0, &_lock);
+ clk_register_clkdev(clk, "ahb_clk", NULL);
+
+ clk = clk_register_aux("uart_syn_clk", "uart_syn_gclk", "pll1_clk", 0,
+ UART_CLK_SYNT, NULL, aux_rtbl, ARRAY_SIZE(aux_rtbl),
+ &_lock, &clk1);
+ clk_register_clkdev(clk, "uart_syn_clk", NULL);
+ clk_register_clkdev(clk1, "uart_syn_gclk", NULL);
+
+ clk = clk_register_mux(NULL, "uart_mclk", uart_parents,
+ ARRAY_SIZE(uart_parents), CLK_SET_RATE_NO_REPARENT,
+ PERIP_CLK_CFG, UART_CLK_SHIFT, UART_CLK_MASK, 0,
+ &_lock);
+ clk_register_clkdev(clk, "uart_mclk", NULL);
+
+ clk = clk_register_gate(NULL, "uart0", "uart_mclk", 0, PERIP1_CLK_ENB,
+ UART0_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "d0000000.serial");
+
+ clk = clk_register_gate(NULL, "uart1", "uart_mclk", 0, PERIP1_CLK_ENB,
+ UART1_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "d0080000.serial");
+
+ clk = clk_register_aux("firda_syn_clk", "firda_syn_gclk", "pll1_clk",
+ 0, FIRDA_CLK_SYNT, NULL, aux_rtbl, ARRAY_SIZE(aux_rtbl),
+ &_lock, &clk1);
+ clk_register_clkdev(clk, "firda_syn_clk", NULL);
+ clk_register_clkdev(clk1, "firda_syn_gclk", NULL);
+
+ clk = clk_register_mux(NULL, "firda_mclk", firda_parents,
+ ARRAY_SIZE(firda_parents), CLK_SET_RATE_NO_REPARENT,
+ PERIP_CLK_CFG, FIRDA_CLK_SHIFT, FIRDA_CLK_MASK, 0,
+ &_lock);
+ clk_register_clkdev(clk, "firda_mclk", NULL);
+
+ clk = clk_register_gate(NULL, "firda_clk", "firda_mclk", 0,
+ PERIP1_CLK_ENB, FIRDA_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "firda");
+
+ clk = clk_register_aux("clcd_syn_clk", "clcd_syn_gclk", "pll1_clk",
+ 0, CLCD_CLK_SYNT, NULL, aux_rtbl, ARRAY_SIZE(aux_rtbl),
+ &_lock, &clk1);
+ clk_register_clkdev(clk, "clcd_syn_clk", NULL);
+ clk_register_clkdev(clk1, "clcd_syn_gclk", NULL);
+
+ clk = clk_register_mux(NULL, "clcd_mclk", clcd_parents,
+ ARRAY_SIZE(clcd_parents), CLK_SET_RATE_NO_REPARENT,
+ PERIP_CLK_CFG, CLCD_CLK_SHIFT, CLCD_CLK_MASK, 0,
+ &_lock);
+ clk_register_clkdev(clk, "clcd_mclk", NULL);
+
+ clk = clk_register_gate(NULL, "clcd_clk", "clcd_mclk", 0,
+ PERIP1_CLK_ENB, CLCD_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "clcd");
+
+ /* gpt clocks */
+ clk = clk_register_gpt("gpt0_1_syn_clk", "pll1_clk", 0, PRSC0_CLK_CFG,
+ gpt_rtbl, ARRAY_SIZE(gpt_rtbl), &_lock);
+ clk_register_clkdev(clk, "gpt0_1_syn_clk", NULL);
+
+ clk = clk_register_mux(NULL, "gpt0_mclk", gpt0_1_parents,
+ ARRAY_SIZE(gpt0_1_parents), CLK_SET_RATE_NO_REPARENT,
+ PERIP_CLK_CFG, GPT0_CLK_SHIFT, GPT_CLK_MASK, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "gpt0");
+
+ clk = clk_register_mux(NULL, "gpt1_mclk", gpt0_1_parents,
+ ARRAY_SIZE(gpt0_1_parents), CLK_SET_RATE_NO_REPARENT,
+ PERIP_CLK_CFG, GPT1_CLK_SHIFT, GPT_CLK_MASK, 0, &_lock);
+ clk_register_clkdev(clk, "gpt1_mclk", NULL);
+
+ clk = clk_register_gate(NULL, "gpt1_clk", "gpt1_mclk", 0,
+ PERIP1_CLK_ENB, GPT1_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "gpt1");
+
+ clk = clk_register_gpt("gpt2_syn_clk", "pll1_clk", 0, PRSC1_CLK_CFG,
+ gpt_rtbl, ARRAY_SIZE(gpt_rtbl), &_lock);
+ clk_register_clkdev(clk, "gpt2_syn_clk", NULL);
+
+ clk = clk_register_mux(NULL, "gpt2_mclk", gpt2_parents,
+ ARRAY_SIZE(gpt2_parents), CLK_SET_RATE_NO_REPARENT,
+ PERIP_CLK_CFG, GPT2_CLK_SHIFT, GPT_CLK_MASK, 0, &_lock);
+ clk_register_clkdev(clk, "gpt2_mclk", NULL);
+
+ clk = clk_register_gate(NULL, "gpt2_clk", "gpt2_mclk", 0,
+ PERIP1_CLK_ENB, GPT2_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "gpt2");
+
+ clk = clk_register_gpt("gpt3_syn_clk", "pll1_clk", 0, PRSC2_CLK_CFG,
+ gpt_rtbl, ARRAY_SIZE(gpt_rtbl), &_lock);
+ clk_register_clkdev(clk, "gpt3_syn_clk", NULL);
+
+ clk = clk_register_mux(NULL, "gpt3_mclk", gpt3_parents,
+ ARRAY_SIZE(gpt3_parents), CLK_SET_RATE_NO_REPARENT,
+ PERIP_CLK_CFG, GPT3_CLK_SHIFT, GPT_CLK_MASK, 0, &_lock);
+ clk_register_clkdev(clk, "gpt3_mclk", NULL);
+
+ clk = clk_register_gate(NULL, "gpt3_clk", "gpt3_mclk", 0,
+ PERIP1_CLK_ENB, GPT3_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "gpt3");
+
+ /* clock derived from pll3 clk */
+ clk = clk_register_gate(NULL, "usbh0_clk", "pll3_clk", 0,
+ PERIP1_CLK_ENB, USBH0_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "e1800000.ehci");
+ clk_register_clkdev(clk, NULL, "e1900000.ohci");
+
+ clk = clk_register_gate(NULL, "usbh1_clk", "pll3_clk", 0,
+ PERIP1_CLK_ENB, USBH1_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "e2000000.ehci");
+ clk_register_clkdev(clk, NULL, "e2100000.ohci");
+
+ clk = clk_register_gate(NULL, "usbd_clk", "pll3_clk", 0, PERIP1_CLK_ENB,
+ USBD_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "designware_udc");
+
+ /* clock derived from ahb clk */
+ clk = clk_register_fixed_factor(NULL, "ahbmult2_clk", "ahb_clk", 0, 2,
+ 1);
+ clk_register_clkdev(clk, "ahbmult2_clk", NULL);
+
+ clk = clk_register_mux(NULL, "ddr_clk", ddr_parents,
+ ARRAY_SIZE(ddr_parents), CLK_SET_RATE_NO_REPARENT,
+ PLL_CLK_CFG, MCTR_CLK_SHIFT, MCTR_CLK_MASK, 0, &_lock);
+ clk_register_clkdev(clk, "ddr_clk", NULL);
+
+ clk = clk_register_divider(NULL, "apb_clk", "ahb_clk",
+ CLK_SET_RATE_PARENT, CORE_CLK_CFG, PCLK_RATIO_SHIFT,
+ PCLK_RATIO_MASK, 0, &_lock);
+ clk_register_clkdev(clk, "apb_clk", NULL);
+
+ clk = clk_register_gate(NULL, "dma_clk", "ahb_clk", 0, PERIP1_CLK_ENB,
+ DMA_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "fc400000.dma");
+
+ clk = clk_register_gate(NULL, "fsmc_clk", "ahb_clk", 0, PERIP1_CLK_ENB,
+ FSMC_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "d1800000.flash");
+
+ clk = clk_register_gate(NULL, "gmac_clk", "ahb_clk", 0, PERIP1_CLK_ENB,
+ GMAC_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "e0800000.ethernet");
+
+ clk = clk_register_gate(NULL, "i2c_clk", "ahb_clk", 0, PERIP1_CLK_ENB,
+ I2C_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "d0200000.i2c");
+
+ clk = clk_register_gate(NULL, "jpeg_clk", "ahb_clk", 0, PERIP1_CLK_ENB,
+ JPEG_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "jpeg");
+
+ clk = clk_register_gate(NULL, "smi_clk", "ahb_clk", 0, PERIP1_CLK_ENB,
+ SMI_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "fc000000.flash");
+
+ /* clock derived from apb clk */
+ clk = clk_register_gate(NULL, "adc_clk", "apb_clk", 0, PERIP1_CLK_ENB,
+ ADC_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "adc");
+
+ clk = clk_register_fixed_factor(NULL, "gpio0_clk", "apb_clk", 0, 1, 1);
+ clk_register_clkdev(clk, NULL, "f0100000.gpio");
+
+ clk = clk_register_gate(NULL, "gpio1_clk", "apb_clk", 0, PERIP1_CLK_ENB,
+ GPIO1_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "fc980000.gpio");
+
+ clk = clk_register_gate(NULL, "gpio2_clk", "apb_clk", 0, PERIP1_CLK_ENB,
+ GPIO2_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "d8100000.gpio");
+
+ clk = clk_register_gate(NULL, "ssp0_clk", "apb_clk", 0, PERIP1_CLK_ENB,
+ SSP0_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "ssp-pl022.0");
+
+ clk = clk_register_gate(NULL, "ssp1_clk", "apb_clk", 0, PERIP1_CLK_ENB,
+ SSP1_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "ssp-pl022.1");
+
+ clk = clk_register_gate(NULL, "ssp2_clk", "apb_clk", 0, PERIP1_CLK_ENB,
+ SSP2_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "ssp-pl022.2");
+}
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