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-rw-r--r--drivers/clk/meson/gxbb.h2
-rw-r--r--drivers/clk/mvebu/ap806-system-controller.c21
-rw-r--r--drivers/clk/qcom/common.c2
-rw-r--r--drivers/clk/sunxi-ng/Kconfig2
-rw-r--r--drivers/clk/versatile/Kconfig3
-rw-r--r--drivers/clk/versatile/Makefile2
-rw-r--r--drivers/clk/versatile/clk-icst.c1
-rw-r--r--drivers/clk/versatile/clk-icst.h2
-rw-r--r--drivers/clk/versatile/clk-impd1.c1
-rw-r--r--drivers/clk/versatile/clk-realview.c1
-rw-r--r--drivers/clk/versatile/clk-versatile.c1
-rw-r--r--drivers/clk/versatile/icst.c105
-rw-r--r--drivers/clk/versatile/icst.h57
13 files changed, 193 insertions, 7 deletions
diff --git a/drivers/clk/meson/gxbb.h b/drivers/clk/meson/gxbb.h
index 1d8d13f5e813..93b8f07ee7af 100644
--- a/drivers/clk/meson/gxbb.h
+++ b/drivers/clk/meson/gxbb.h
@@ -195,7 +195,7 @@
/* CLKID_I2C */
/* #define CLKID_SAR_ADC */
#define CLKID_SMART_CARD 24
-#define CLKID_RNG0 25
+/* CLKID_RNG0 */
#define CLKID_UART0 26
#define CLKID_SDHC 27
#define CLKID_STREAM 28
diff --git a/drivers/clk/mvebu/ap806-system-controller.c b/drivers/clk/mvebu/ap806-system-controller.c
index f17702107ac5..8155baccc98e 100644
--- a/drivers/clk/mvebu/ap806-system-controller.c
+++ b/drivers/clk/mvebu/ap806-system-controller.c
@@ -23,7 +23,7 @@
#define AP806_SAR_REG 0x400
#define AP806_SAR_CLKFREQ_MODE_MASK 0x1f
-#define AP806_CLK_NUM 4
+#define AP806_CLK_NUM 5
static struct clk *ap806_clks[AP806_CLK_NUM];
@@ -135,6 +135,23 @@ static int ap806_syscon_clk_probe(struct platform_device *pdev)
goto fail3;
}
+ /* eMMC Clock is fixed clock divided by 3 */
+ if (of_property_read_string_index(np, "clock-output-names",
+ 4, &name)) {
+ ap806_clk_data.clk_num--;
+ dev_warn(&pdev->dev,
+ "eMMC clock missing: update the device tree!\n");
+ } else {
+ ap806_clks[4] = clk_register_fixed_factor(NULL, name,
+ fixedclk_name,
+ 0, 1, 3);
+ if (IS_ERR(ap806_clks[4])) {
+ ret = PTR_ERR(ap806_clks[4]);
+ goto fail4;
+ }
+ }
+
+ of_clk_add_provider(np, of_clk_src_onecell_get, &ap806_clk_data);
ret = of_clk_add_provider(np, of_clk_src_onecell_get, &ap806_clk_data);
if (ret)
goto fail_clk_add;
@@ -142,6 +159,8 @@ static int ap806_syscon_clk_probe(struct platform_device *pdev)
return 0;
fail_clk_add:
+ clk_unregister_fixed_factor(ap806_clks[4]);
+fail4:
clk_unregister_fixed_factor(ap806_clks[3]);
fail3:
clk_unregister_fixed_rate(ap806_clks[2]);
diff --git a/drivers/clk/qcom/common.c b/drivers/clk/qcom/common.c
index 03f9d316f969..d523991c945f 100644
--- a/drivers/clk/qcom/common.c
+++ b/drivers/clk/qcom/common.c
@@ -128,7 +128,7 @@ static void qcom_cc_gdsc_unregister(void *data)
/*
* Backwards compatibility with old DTs. Register a pass-through factor 1/1
- * clock to translate 'path' clk into 'name' clk and regsiter the 'path'
+ * clock to translate 'path' clk into 'name' clk and register the 'path'
* clk as a fixed rate clock if it isn't present.
*/
static int _qcom_cc_register_board_clk(struct device *dev, const char *path,
diff --git a/drivers/clk/sunxi-ng/Kconfig b/drivers/clk/sunxi-ng/Kconfig
index 64088e599404..b0d551a8efe4 100644
--- a/drivers/clk/sunxi-ng/Kconfig
+++ b/drivers/clk/sunxi-ng/Kconfig
@@ -16,7 +16,7 @@ config SUNXI_CCU_FRAC
bool
config SUNXI_CCU_GATE
- bool
+ def_bool y
config SUNXI_CCU_MUX
bool
diff --git a/drivers/clk/versatile/Kconfig b/drivers/clk/versatile/Kconfig
index a6da2aa09f83..8aa875f25239 100644
--- a/drivers/clk/versatile/Kconfig
+++ b/drivers/clk/versatile/Kconfig
@@ -1,3 +1,6 @@
+config ICST
+ bool
+
config COMMON_CLK_VERSATILE
bool "Clock driver for ARM Reference designs"
depends on ARCH_INTEGRATOR || ARCH_REALVIEW || \
diff --git a/drivers/clk/versatile/Makefile b/drivers/clk/versatile/Makefile
index 8ff03744fe98..794130402c8d 100644
--- a/drivers/clk/versatile/Makefile
+++ b/drivers/clk/versatile/Makefile
@@ -1,5 +1,5 @@
# Makefile for Versatile-specific clocks
-obj-$(CONFIG_ICST) += clk-icst.o clk-versatile.o
+obj-$(CONFIG_ICST) += icst.o clk-icst.o clk-versatile.o
obj-$(CONFIG_INTEGRATOR_IMPD1) += clk-impd1.o
obj-$(CONFIG_ARCH_REALVIEW) += clk-realview.o
obj-$(CONFIG_CLK_SP810) += clk-sp810.o
diff --git a/drivers/clk/versatile/clk-icst.c b/drivers/clk/versatile/clk-icst.c
index 4faa94440779..09fbe66f1f11 100644
--- a/drivers/clk/versatile/clk-icst.c
+++ b/drivers/clk/versatile/clk-icst.c
@@ -22,6 +22,7 @@
#include <linux/regmap.h>
#include <linux/mfd/syscon.h>
+#include "icst.h"
#include "clk-icst.h"
/* Magic unlocking token used on all Versatile boards */
diff --git a/drivers/clk/versatile/clk-icst.h b/drivers/clk/versatile/clk-icst.h
index 04e6f0aef588..5add02ebec5d 100644
--- a/drivers/clk/versatile/clk-icst.h
+++ b/drivers/clk/versatile/clk-icst.h
@@ -1,5 +1,3 @@
-#include <asm/hardware/icst.h>
-
/**
* struct clk_icst_desc - descriptor for the ICST VCO
* @params: ICST parameters
diff --git a/drivers/clk/versatile/clk-impd1.c b/drivers/clk/versatile/clk-impd1.c
index 74c3216dbb00..401558bfc409 100644
--- a/drivers/clk/versatile/clk-impd1.c
+++ b/drivers/clk/versatile/clk-impd1.c
@@ -12,6 +12,7 @@
#include <linux/io.h>
#include <linux/platform_data/clk-integrator.h>
+#include "icst.h"
#include "clk-icst.h"
#define IMPD1_OSC1 0x00
diff --git a/drivers/clk/versatile/clk-realview.c b/drivers/clk/versatile/clk-realview.c
index c56efc70ac16..6fdfee3232f4 100644
--- a/drivers/clk/versatile/clk-realview.c
+++ b/drivers/clk/versatile/clk-realview.c
@@ -11,6 +11,7 @@
#include <linux/io.h>
#include <linux/clk-provider.h>
+#include "icst.h"
#include "clk-icst.h"
#define REALVIEW_SYS_OSC0_OFFSET 0x0C
diff --git a/drivers/clk/versatile/clk-versatile.c b/drivers/clk/versatile/clk-versatile.c
index a89a927567e0..d6960de64d4a 100644
--- a/drivers/clk/versatile/clk-versatile.c
+++ b/drivers/clk/versatile/clk-versatile.c
@@ -12,6 +12,7 @@
#include <linux/of.h>
#include <linux/of_address.h>
+#include "icst.h"
#include "clk-icst.h"
#define INTEGRATOR_HDR_LOCK_OFFSET 0x14
diff --git a/drivers/clk/versatile/icst.c b/drivers/clk/versatile/icst.c
new file mode 100644
index 000000000000..de2af63a3aad
--- /dev/null
+++ b/drivers/clk/versatile/icst.c
@@ -0,0 +1,105 @@
+/*
+ * linux/arch/arm/common/icst307.c
+ *
+ * Copyright (C) 2003 Deep Blue Solutions, Ltd, All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Support functions for calculating clocks/divisors for the ICST307
+ * clock generators. See http://www.idt.com/ for more information
+ * on these devices.
+ *
+ * This is an almost identical implementation to the ICST525 clock generator.
+ * The s2div and idx2s files are different
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <asm/div64.h>
+#include "icst.h"
+
+/*
+ * Divisors for each OD setting.
+ */
+const unsigned char icst307_s2div[8] = { 10, 2, 8, 4, 5, 7, 3, 6 };
+const unsigned char icst525_s2div[8] = { 10, 2, 8, 4, 5, 7, 9, 6 };
+EXPORT_SYMBOL(icst307_s2div);
+EXPORT_SYMBOL(icst525_s2div);
+
+unsigned long icst_hz(const struct icst_params *p, struct icst_vco vco)
+{
+ u64 dividend = p->ref * 2 * (u64)(vco.v + 8);
+ u32 divisor = (vco.r + 2) * p->s2div[vco.s];
+
+ do_div(dividend, divisor);
+ return (unsigned long)dividend;
+}
+
+EXPORT_SYMBOL(icst_hz);
+
+/*
+ * Ascending divisor S values.
+ */
+const unsigned char icst307_idx2s[8] = { 1, 6, 3, 4, 7, 5, 2, 0 };
+const unsigned char icst525_idx2s[8] = { 1, 3, 4, 7, 5, 2, 6, 0 };
+EXPORT_SYMBOL(icst307_idx2s);
+EXPORT_SYMBOL(icst525_idx2s);
+
+struct icst_vco
+icst_hz_to_vco(const struct icst_params *p, unsigned long freq)
+{
+ struct icst_vco vco = { .s = 1, .v = p->vd_max, .r = p->rd_max };
+ unsigned long f;
+ unsigned int i = 0, rd, best = (unsigned int)-1;
+
+ /*
+ * First, find the PLL output divisor such
+ * that the PLL output is within spec.
+ */
+ do {
+ f = freq * p->s2div[p->idx2s[i]];
+
+ if (f > p->vco_min && f <= p->vco_max)
+ break;
+ i++;
+ } while (i < 8);
+
+ if (i >= 8)
+ return vco;
+
+ vco.s = p->idx2s[i];
+
+ /*
+ * Now find the closest divisor combination
+ * which gives a PLL output of 'f'.
+ */
+ for (rd = p->rd_min; rd <= p->rd_max; rd++) {
+ unsigned long fref_div, f_pll;
+ unsigned int vd;
+ int f_diff;
+
+ fref_div = (2 * p->ref) / rd;
+
+ vd = (f + fref_div / 2) / fref_div;
+ if (vd < p->vd_min || vd > p->vd_max)
+ continue;
+
+ f_pll = fref_div * vd;
+ f_diff = f_pll - f;
+ if (f_diff < 0)
+ f_diff = -f_diff;
+
+ if ((unsigned)f_diff < best) {
+ vco.v = vd - 8;
+ vco.r = rd - 2;
+ if (f_diff == 0)
+ break;
+ best = f_diff;
+ }
+ }
+
+ return vco;
+}
+
+EXPORT_SYMBOL(icst_hz_to_vco);
diff --git a/drivers/clk/versatile/icst.h b/drivers/clk/versatile/icst.h
new file mode 100644
index 000000000000..7519bba03b04
--- /dev/null
+++ b/drivers/clk/versatile/icst.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2003 Deep Blue Solutions, Ltd, All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Support functions for calculating clocks/divisors for the ICST
+ * clock generators. See http://www.idt.com/ for more information
+ * on these devices.
+ */
+#ifndef ICST_H
+#define ICST_H
+
+struct icst_params {
+ unsigned long ref;
+ unsigned long vco_max; /* inclusive */
+ unsigned long vco_min; /* exclusive */
+ unsigned short vd_min; /* inclusive */
+ unsigned short vd_max; /* inclusive */
+ unsigned char rd_min; /* inclusive */
+ unsigned char rd_max; /* inclusive */
+ const unsigned char *s2div; /* chip specific s2div array */
+ const unsigned char *idx2s; /* chip specific idx2s array */
+};
+
+struct icst_vco {
+ unsigned short v;
+ unsigned char r;
+ unsigned char s;
+};
+
+unsigned long icst_hz(const struct icst_params *p, struct icst_vco vco);
+struct icst_vco icst_hz_to_vco(const struct icst_params *p, unsigned long freq);
+
+/*
+ * ICST307 VCO frequency must be between 6MHz and 200MHz (3.3 or 5V).
+ * This frequency is pre-output divider.
+ */
+#define ICST307_VCO_MIN 6000000
+#define ICST307_VCO_MAX 200000000
+
+extern const unsigned char icst307_s2div[];
+extern const unsigned char icst307_idx2s[];
+
+/*
+ * ICST525 VCO frequency must be between 10MHz and 200MHz (3V) or 320MHz (5V).
+ * This frequency is pre-output divider.
+ */
+#define ICST525_VCO_MIN 10000000
+#define ICST525_VCO_MAX_3V 200000000
+#define ICST525_VCO_MAX_5V 320000000
+
+extern const unsigned char icst525_s2div[];
+extern const unsigned char icst525_idx2s[];
+
+#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-12 16:15:16 +0000