*
* Copyright (C) 2006-2007 Renesas Technology Corp.
* Copyright (C) 2006-2007 Renesas Solutions Corp.
- * Copyright (C) 2006-2007 Paul Mundt
+ * Copyright (C) 2006-2010 Paul Mundt
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
#include <asm/clock.h>
#include <asm/freq.h>
-static int ifc_divisors[] = { 1, 2, 4 ,6 };
-static int bfc_divisors[] = { 1, 1, 1, 1, 1, 12, 16, 18, 24, 32, 36, 48 };
-static int pfc_divisors[] = { 1, 1, 1, 1, 1, 1, 1, 18, 24, 32, 36, 48 };
-static int cfc_divisors[] = { 1, 1, 4, 6 };
-
-#define IFC_POS 28
-#define IFC_MSK 0x0003
-#define BFC_MSK 0x000f
-#define PFC_MSK 0x000f
-#define CFC_MSK 0x0003
-#define BFC_POS 16
-#define PFC_POS 0
-#define CFC_POS 20
-
-static void master_clk_init(struct clk *clk)
-{
- clk->rate *= pfc_divisors[(__raw_readl(FRQCR) >> PFC_POS) & PFC_MSK];
-}
-
-static struct clk_ops shx3_master_clk_ops = {
- .init = master_clk_init,
+/*
+ * Default rate for the root input clock, reset this with clk_set_rate()
+ * from the platform code.
+ */
+static struct clk extal_clk = {
+ .rate = 16666666,
};
-static unsigned long module_clk_recalc(struct clk *clk)
+static unsigned long pll_recalc(struct clk *clk)
{
- int idx = ((__raw_readl(FRQCR) >> PFC_POS) & PFC_MSK);
- return clk->parent->rate / pfc_divisors[idx];
+ /* PLL1 has a fixed x72 multiplier. */
+ return clk->parent->rate * 72;
}
-static struct clk_ops shx3_module_clk_ops = {
- .recalc = module_clk_recalc,
+static struct clk_ops pll_clk_ops = {
+ .recalc = pll_recalc,
};
-static unsigned long bus_clk_recalc(struct clk *clk)
-{
- int idx = ((__raw_readl(FRQCR) >> BFC_POS) & BFC_MSK);
- return clk->parent->rate / bfc_divisors[idx];
-}
+static struct clk pll_clk = {
+ .ops = &pll_clk_ops,
+ .parent = &extal_clk,
+ .flags = CLK_ENABLE_ON_INIT,
+};
-static struct clk_ops shx3_bus_clk_ops = {
- .recalc = bus_clk_recalc,
+static struct clk *clks[] = {
+ &extal_clk,
+ &pll_clk,
};
-static unsigned long cpu_clk_recalc(struct clk *clk)
-{
- int idx = ((__raw_readl(FRQCR) >> IFC_POS) & IFC_MSK);
- return clk->parent->rate / ifc_divisors[idx];
-}
+static unsigned int div2[] = { 1, 2, 4, 6, 8, 12, 16, 18,
+ 24, 32, 36, 48 };
-static struct clk_ops shx3_cpu_clk_ops = {
- .recalc = cpu_clk_recalc,
+static struct clk_div_mult_table div4_div_mult_table = {
+ .divisors = div2,
+ .nr_divisors = ARRAY_SIZE(div2),
};
-static struct clk_ops *shx3_clk_ops[] = {
- &shx3_master_clk_ops,
- &shx3_module_clk_ops,
- &shx3_bus_clk_ops,
- &shx3_cpu_clk_ops,
+static struct clk_div4_table div4_table = {
+ .div_mult_table = &div4_div_mult_table,
};
-void __init arch_init_clk_ops(struct clk_ops **ops, int idx)
-{
- if (idx < ARRAY_SIZE(shx3_clk_ops))
- *ops = shx3_clk_ops[idx];
-}
+enum { DIV4_I, DIV4_SH, DIV4_B, DIV4_DDR, DIV4_SHA, DIV4_P, DIV4_NR };
-static unsigned long shyway_clk_recalc(struct clk *clk)
-{
- int idx = ((__raw_readl(FRQCR) >> CFC_POS) & CFC_MSK);
- return clk->parent->rate / cfc_divisors[idx];
-}
+#define DIV4(_bit, _mask, _flags) \
+ SH_CLK_DIV4(&pll_clk, FRQMR1, _bit, _mask, _flags)
-static struct clk_ops shx3_shyway_clk_ops = {
- .recalc = shyway_clk_recalc,
+struct clk div4_clks[DIV4_NR] = {
+ [DIV4_P] = DIV4(0, 0x0f80, 0),
+ [DIV4_SHA] = DIV4(4, 0x0ff0, 0),
+ [DIV4_DDR] = DIV4(12, 0x000c, CLK_ENABLE_ON_INIT),
+ [DIV4_B] = DIV4(16, 0x0fe0, CLK_ENABLE_ON_INIT),
+ [DIV4_SH] = DIV4(20, 0x000c, CLK_ENABLE_ON_INIT),
+ [DIV4_I] = DIV4(28, 0x000e, CLK_ENABLE_ON_INIT),
};
-static struct clk shx3_shyway_clk = {
- .flags = CLK_ENABLE_ON_INIT,
- .ops = &shx3_shyway_clk_ops,
-};
-
-/*
- * Additional SHx3-specific on-chip clocks that aren't already part of the
- * clock framework
- */
-static struct clk *shx3_onchip_clocks[] = {
- &shx3_shyway_clk,
+#define MSTPCR0 0xffc00030
+#define MSTPCR1 0xffc00034
+
+enum { MSTP027, MSTP026, MSTP025, MSTP024,
+ MSTP009, MSTP008, MSTP003, MSTP002,
+ MSTP001, MSTP000, MSTP119, MSTP105,
+ MSTP104, MSTP_NR };
+
+static struct clk mstp_clks[MSTP_NR] = {
+ /* MSTPCR0 */
+ [MSTP027] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 27, 0),
+ [MSTP026] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 26, 0),
+ [MSTP025] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 25, 0),
+ [MSTP024] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 24, 0),
+ [MSTP009] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 9, 0),
+ [MSTP008] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 8, 0),
+ [MSTP003] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 3, 0),
+ [MSTP002] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 2, 0),
+ [MSTP001] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 1, 0),
+ [MSTP000] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 0, 0),
+
+ /* MSTPCR1 */
+ [MSTP119] = SH_CLK_MSTP32(NULL, MSTPCR1, 19, 0),
+ [MSTP105] = SH_CLK_MSTP32(NULL, MSTPCR1, 5, 0),
+ [MSTP104] = SH_CLK_MSTP32(NULL, MSTPCR1, 4, 0),
};
#define CLKDEV_CON_ID(_id, _clk) { .con_id = _id, .clk = _clk }
static struct clk_lookup lookups[] = {
/* main clocks */
- CLKDEV_CON_ID("shyway_clk", &shx3_shyway_clk),
+ CLKDEV_CON_ID("extal", &extal_clk),
+ CLKDEV_CON_ID("pll_clk", &pll_clk),
+
+ /* DIV4 clocks */
+ CLKDEV_CON_ID("peripheral_clk", &div4_clks[DIV4_P]),
+ CLKDEV_CON_ID("shywaya_clk", &div4_clks[DIV4_SHA]),
+ CLKDEV_CON_ID("ddr_clk", &div4_clks[DIV4_DDR]),
+ CLKDEV_CON_ID("bus_clk", &div4_clks[DIV4_B]),
+ CLKDEV_CON_ID("shyway_clk", &div4_clks[DIV4_SH]),
+ CLKDEV_CON_ID("cpu_clk", &div4_clks[DIV4_I]),
+
+ /* MSTP32 clocks */
+ {
+ /* SCIF3 */
+ .dev_id = "sh-sci.3",
+ .con_id = "sci_fck",
+ .clk = &mstp_clks[MSTP027],
+ }, {
+ /* SCIF2 */
+ .dev_id = "sh-sci.2",
+ .con_id = "sci_fck",
+ .clk = &mstp_clks[MSTP026],
+ }, {
+ /* SCIF1 */
+ .dev_id = "sh-sci.1",
+ .con_id = "sci_fck",
+ .clk = &mstp_clks[MSTP025],
+ }, {
+ /* SCIF0 */
+ .dev_id = "sh-sci.0",
+ .con_id = "sci_fck",
+ .clk = &mstp_clks[MSTP024],
+ },
+ CLKDEV_CON_ID("h8ex_fck", &mstp_clks[MSTP003]),
+ CLKDEV_CON_ID("csm_fck", &mstp_clks[MSTP002]),
+ CLKDEV_CON_ID("fe1_fck", &mstp_clks[MSTP001]),
+ CLKDEV_CON_ID("fe0_fck", &mstp_clks[MSTP000]),
+ {
+ /* TMU0 */
+ .dev_id = "sh_tmu.0",
+ .con_id = "tmu_fck",
+ .clk = &mstp_clks[MSTP008],
+ }, {
+ /* TMU1 */
+ .dev_id = "sh_tmu.1",
+ .con_id = "tmu_fck",
+ .clk = &mstp_clks[MSTP008],
+ }, {
+ /* TMU2 */
+ .dev_id = "sh_tmu.2",
+ .con_id = "tmu_fck",
+ .clk = &mstp_clks[MSTP008],
+ }, {
+ /* TMU3 */
+ .dev_id = "sh_tmu.3",
+ .con_id = "tmu_fck",
+ .clk = &mstp_clks[MSTP009],
+ }, {
+ /* TMU4 */
+ .dev_id = "sh_tmu.4",
+ .con_id = "tmu_fck",
+ .clk = &mstp_clks[MSTP009],
+ }, {
+ /* TMU5 */
+ .dev_id = "sh_tmu.5",
+ .con_id = "tmu_fck",
+ .clk = &mstp_clks[MSTP009],
+ },
+ CLKDEV_CON_ID("hudi_fck", &mstp_clks[MSTP119]),
+ CLKDEV_CON_ID("dmac_11_6_fck", &mstp_clks[MSTP105]),
+ CLKDEV_CON_ID("dmac_5_0_fck", &mstp_clks[MSTP104]),
};
int __init arch_clk_init(void)
{
- struct clk *clk;
int i, ret = 0;
- cpg_clk_init();
-
- clk = clk_get(NULL, "master_clk");
- for (i = 0; i < ARRAY_SIZE(shx3_onchip_clocks); i++) {
- struct clk *clkp = shx3_onchip_clocks[i];
-
- clkp->parent = clk;
- ret |= clk_register(clkp);
- }
-
- clk_put(clk);
+ for (i = 0; i < ARRAY_SIZE(clks); i++)
+ ret |= clk_register(clks[i]);
+ for (i = 0; i < ARRAY_SIZE(lookups); i++)
+ clkdev_add(&lookups[i]);
- clkdev_add_table(lookups, ARRAY_SIZE(lookups));
+ if (!ret)
+ ret = sh_clk_div4_register(div4_clks, ARRAY_SIZE(div4_clks),
+ &div4_table);
+ if (!ret)
+ ret = sh_clk_mstp32_register(mstp_clks, MSTP_NR);
return ret;
}
git.openpandora.org / pandora-kernel.git / commitdiff