ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/arch/sh/kernel/cpu/sh2a/clock-sh7264.c b/marvell/linux/arch/sh/kernel/cpu/sh2a/clock-sh7264.c
new file mode 100644
index 0000000..d9acc1e
--- /dev/null
+++ b/marvell/linux/arch/sh/kernel/cpu/sh2a/clock-sh7264.c
@@ -0,0 +1,157 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * arch/sh/kernel/cpu/sh2a/clock-sh7264.c
+ *
+ * SH7264 clock framework support
+ *
+ * Copyright (C) 2012 Phil Edworthy
+ */
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/io.h>
+#include <linux/clkdev.h>
+#include <asm/clock.h>
+
+/* SH7264 registers */
+#define FRQCR 0xfffe0010
+#define STBCR3 0xfffe0408
+#define STBCR4 0xfffe040c
+#define STBCR5 0xfffe0410
+#define STBCR6 0xfffe0414
+#define STBCR7 0xfffe0418
+#define STBCR8 0xfffe041c
+
+static const unsigned int pll1rate[] = {8, 12};
+
+static unsigned int pll1_div;
+
+/* Fixed 32 KHz root clock for RTC */
+static struct clk r_clk = {
+ .rate = 32768,
+};
+
+/*
+ * Default rate for the root input clock, reset this with clk_set_rate()
+ * from the platform code.
+ */
+static struct clk extal_clk = {
+ .rate = 18000000,
+};
+
+static unsigned long pll_recalc(struct clk *clk)
+{
+ unsigned long rate = clk->parent->rate / pll1_div;
+ return rate * pll1rate[(__raw_readw(FRQCR) >> 8) & 1];
+}
+
+static struct sh_clk_ops pll_clk_ops = {
+ .recalc = pll_recalc,
+};
+
+static struct clk pll_clk = {
+ .ops = &pll_clk_ops,
+ .parent = &extal_clk,
+ .flags = CLK_ENABLE_ON_INIT,
+};
+
+struct clk *main_clks[] = {
+ &r_clk,
+ &extal_clk,
+ &pll_clk,
+};
+
+static int div2[] = { 1, 2, 3, 4, 6, 8, 12 };
+
+static struct clk_div_mult_table div4_div_mult_table = {
+ .divisors = div2,
+ .nr_divisors = ARRAY_SIZE(div2),
+};
+
+static struct clk_div4_table div4_table = {
+ .div_mult_table = &div4_div_mult_table,
+};
+
+enum { DIV4_I, DIV4_P,
+ DIV4_NR };
+
+#define DIV4(_reg, _bit, _mask, _flags) \
+ SH_CLK_DIV4(&pll_clk, _reg, _bit, _mask, _flags)
+
+/* The mask field specifies the div2 entries that are valid */
+struct clk div4_clks[DIV4_NR] = {
+ [DIV4_I] = DIV4(FRQCR, 4, 0x7, CLK_ENABLE_REG_16BIT
+ | CLK_ENABLE_ON_INIT),
+ [DIV4_P] = DIV4(FRQCR, 0, 0x78, CLK_ENABLE_REG_16BIT),
+};
+
+enum { MSTP77, MSTP74, MSTP72,
+ MSTP60,
+ MSTP35, MSTP34, MSTP33, MSTP32, MSTP30,
+ MSTP_NR };
+
+static struct clk mstp_clks[MSTP_NR] = {
+ [MSTP77] = SH_CLK_MSTP8(&div4_clks[DIV4_P], STBCR7, 7, 0), /* SCIF */
+ [MSTP74] = SH_CLK_MSTP8(&div4_clks[DIV4_P], STBCR7, 4, 0), /* VDC */
+ [MSTP72] = SH_CLK_MSTP8(&div4_clks[DIV4_P], STBCR7, 2, 0), /* CMT */
+ [MSTP60] = SH_CLK_MSTP8(&div4_clks[DIV4_P], STBCR6, 0, 0), /* USB */
+ [MSTP35] = SH_CLK_MSTP8(&div4_clks[DIV4_P], STBCR3, 6, 0), /* MTU2 */
+ [MSTP34] = SH_CLK_MSTP8(&div4_clks[DIV4_P], STBCR3, 4, 0), /* SDHI0 */
+ [MSTP33] = SH_CLK_MSTP8(&div4_clks[DIV4_P], STBCR3, 3, 0), /* SDHI1 */
+ [MSTP32] = SH_CLK_MSTP8(&div4_clks[DIV4_P], STBCR3, 2, 0), /* ADC */
+ [MSTP30] = SH_CLK_MSTP8(&r_clk, STBCR3, 0, 0), /* RTC */
+};
+
+static struct clk_lookup lookups[] = {
+ /* main clocks */
+ CLKDEV_CON_ID("rclk", &r_clk),
+ CLKDEV_CON_ID("extal", &extal_clk),
+ CLKDEV_CON_ID("pll_clk", &pll_clk),
+
+ /* DIV4 clocks */
+ CLKDEV_CON_ID("cpu_clk", &div4_clks[DIV4_I]),
+ CLKDEV_CON_ID("peripheral_clk", &div4_clks[DIV4_P]),
+
+ /* MSTP clocks */
+ CLKDEV_ICK_ID("fck", "sh-sci.0", &mstp_clks[MSTP77]),
+ CLKDEV_ICK_ID("fck", "sh-sci.1", &mstp_clks[MSTP77]),
+ CLKDEV_ICK_ID("fck", "sh-sci.2", &mstp_clks[MSTP77]),
+ CLKDEV_ICK_ID("fck", "sh-sci.3", &mstp_clks[MSTP77]),
+ CLKDEV_ICK_ID("fck", "sh-sci.4", &mstp_clks[MSTP77]),
+ CLKDEV_ICK_ID("fck", "sh-sci.5", &mstp_clks[MSTP77]),
+ CLKDEV_ICK_ID("fck", "sh-sci.6", &mstp_clks[MSTP77]),
+ CLKDEV_ICK_ID("fck", "sh-sci.7", &mstp_clks[MSTP77]),
+ CLKDEV_CON_ID("vdc3", &mstp_clks[MSTP74]),
+ CLKDEV_ICK_ID("fck", "sh-cmt-16.0", &mstp_clks[MSTP72]),
+ CLKDEV_CON_ID("usb0", &mstp_clks[MSTP60]),
+ CLKDEV_ICK_ID("fck", "sh-mtu2", &mstp_clks[MSTP35]),
+ CLKDEV_CON_ID("sdhi0", &mstp_clks[MSTP34]),
+ CLKDEV_CON_ID("sdhi1", &mstp_clks[MSTP33]),
+ CLKDEV_CON_ID("adc0", &mstp_clks[MSTP32]),
+ CLKDEV_CON_ID("rtc0", &mstp_clks[MSTP30]),
+};
+
+int __init arch_clk_init(void)
+{
+ int k, ret = 0;
+
+ if (test_mode_pin(MODE_PIN0)) {
+ if (test_mode_pin(MODE_PIN1))
+ pll1_div = 3;
+ else
+ pll1_div = 4;
+ } else
+ pll1_div = 1;
+
+ for (k = 0; !ret && (k < ARRAY_SIZE(main_clks)); k++)
+ ret = clk_register(main_clks[k]);
+
+ clkdev_add_table(lookups, ARRAY_SIZE(lookups));
+
+ if (!ret)
+ ret = sh_clk_div4_register(div4_clks, DIV4_NR, &div4_table);
+
+ if (!ret)
+ ret = sh_clk_mstp_register(mstp_clks, MSTP_NR);
+
+ return ret;
+}