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authorPeter De Schrijver <pdeschrijver@nvidia.com>2012-01-09 05:35:11 +0000
committerOlof Johansson <olof@lixom.net>2012-02-06 09:16:15 -0800
commit4fccf75ba3bee0bb3be7828caa03625d4ac100a2 (patch)
treeac2445c017187a1f68fbf642c1712706c0903c0b /arch/arm/mach-tegra
parentcaa4868ee07029e60450909960652b96a50ebfbd (diff)
downloadlinux-4fccf75ba3bee0bb3be7828caa03625d4ac100a2.tar.bz2
ARM: tegra: add support for new clock framework features
Add support for new clock framework features implemented in tegra30. Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com> Tested-by: Stephen Warren <swarren@nvidia.com> Acked-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'arch/arm/mach-tegra')
-rw-r--r--arch/arm/mach-tegra/clock.c22
-rw-r--r--arch/arm/mach-tegra/clock.h14
-rw-r--r--arch/arm/mach-tegra/include/mach/clk.h10
3 files changed, 46 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/clock.c b/arch/arm/mach-tegra/clock.c
index 8337068a4abe..8dad8d18cb49 100644
--- a/arch/arm/mach-tegra/clock.c
+++ b/arch/arm/mach-tegra/clock.c
@@ -399,6 +399,28 @@ void tegra_periph_reset_assert(struct clk *c)
}
EXPORT_SYMBOL(tegra_periph_reset_assert);
+/* Several extended clock configuration bits (e.g., clock routing, clock
+ * phase control) are included in PLL and peripheral clock source
+ * registers. */
+int tegra_clk_cfg_ex(struct clk *c, enum tegra_clk_ex_param p, u32 setting)
+{
+ int ret = 0;
+ unsigned long flags;
+
+ spin_lock_irqsave(&c->spinlock, flags);
+
+ if (!c->ops || !c->ops->clk_cfg_ex) {
+ ret = -ENOSYS;
+ goto out;
+ }
+ ret = c->ops->clk_cfg_ex(c, p, setting);
+
+out:
+ spin_unlock_irqrestore(&c->spinlock, flags);
+
+ return ret;
+}
+
#ifdef CONFIG_DEBUG_FS
static int __clk_lock_all_spinlocks(void)
diff --git a/arch/arm/mach-tegra/clock.h b/arch/arm/mach-tegra/clock.h
index 5c44106616c5..18f8b857361d 100644
--- a/arch/arm/mach-tegra/clock.h
+++ b/arch/arm/mach-tegra/clock.h
@@ -24,6 +24,8 @@
#include <linux/list.h>
#include <linux/spinlock.h>
+#include <mach/clk.h>
+
#define DIV_BUS (1 << 0)
#define DIV_U71 (1 << 1)
#define DIV_U71_FIXED (1 << 2)
@@ -39,7 +41,16 @@
#define PERIPH_MANUAL_RESET (1 << 12)
#define PLL_ALT_MISC_REG (1 << 13)
#define PLLU (1 << 14)
+#define PLLX (1 << 15)
+#define MUX_PWM (1 << 16)
+#define MUX8 (1 << 17)
+#define DIV_U71_UART (1 << 18)
+#define MUX_CLK_OUT (1 << 19)
+#define PLLM (1 << 20)
+#define DIV_U71_INT (1 << 21)
+#define DIV_U71_IDLE (1 << 22)
#define ENABLE_ON_INIT (1 << 28)
+#define PERIPH_ON_APB (1 << 29)
struct clk;
@@ -65,6 +76,8 @@ struct clk_ops {
int (*set_rate)(struct clk *, unsigned long);
long (*round_rate)(struct clk *, unsigned long);
void (*reset)(struct clk *, bool);
+ int (*clk_cfg_ex)(struct clk *,
+ enum tegra_clk_ex_param, u32);
};
enum clk_state {
@@ -114,6 +127,7 @@ struct clk {
unsigned long vco_max;
const struct clk_pll_freq_table *freq_table;
int lock_delay;
+ unsigned long fixed_rate;
} pll;
struct {
u32 sel;
diff --git a/arch/arm/mach-tegra/include/mach/clk.h b/arch/arm/mach-tegra/include/mach/clk.h
index fc3ecb66de08..d97e403303a0 100644
--- a/arch/arm/mach-tegra/include/mach/clk.h
+++ b/arch/arm/mach-tegra/include/mach/clk.h
@@ -22,10 +22,20 @@
struct clk;
+enum tegra_clk_ex_param {
+ TEGRA_CLK_VI_INP_SEL,
+ TEGRA_CLK_DTV_INVERT,
+ TEGRA_CLK_NAND_PAD_DIV2_ENB,
+ TEGRA_CLK_PLLD_CSI_OUT_ENB,
+ TEGRA_CLK_PLLD_DSI_OUT_ENB,
+ TEGRA_CLK_PLLD_MIPI_MUX_SEL,
+};
+
void tegra_periph_reset_deassert(struct clk *c);
void tegra_periph_reset_assert(struct clk *c);
unsigned long clk_get_rate_all_locked(struct clk *c);
void tegra2_sdmmc_tap_delay(struct clk *c, int delay);
+int tegra_clk_cfg_ex(struct clk *c, enum tegra_clk_ex_param p, u32 setting);
#endif