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Diffstat (limited to 'target/linux/ramips/patches-3.10/0021-MIPS-ralink-add-cpu-frequency-scaling.patch')
-rw-r--r--target/linux/ramips/patches-3.10/0021-MIPS-ralink-add-cpu-frequency-scaling.patch95
1 files changed, 0 insertions, 95 deletions
diff --git a/target/linux/ramips/patches-3.10/0021-MIPS-ralink-add-cpu-frequency-scaling.patch b/target/linux/ramips/patches-3.10/0021-MIPS-ralink-add-cpu-frequency-scaling.patch
deleted file mode 100644
index 3fb262b..0000000
--- a/target/linux/ramips/patches-3.10/0021-MIPS-ralink-add-cpu-frequency-scaling.patch
+++ /dev/null
@@ -1,95 +0,0 @@
-From f6dc5d40c766e5ff9b18b93a1b6f7a576655f9c4 Mon Sep 17 00:00:00 2001
-From: John Crispin <blogic@openwrt.org>
-Date: Sun, 28 Jul 2013 16:26:41 +0200
-Subject: [PATCH 21/25] MIPS: ralink: add cpu frequency scaling
-
-This feature will break udelay() and cause the delay loop to have longer delays
-when the frequency is scaled causing a performance hit.
-
-Signed-off-by: John Crispin <blogic@openwrt.org>
----
- arch/mips/ralink/cevt-rt3352.c | 36 ++++++++++++++++++++++++++++++++++++
- 1 file changed, 36 insertions(+)
-
---- a/arch/mips/ralink/cevt-rt3352.c
-+++ b/arch/mips/ralink/cevt-rt3352.c
-@@ -29,6 +29,10 @@
- /* enable the counter */
- #define CFG_CNT_EN 0x1
-
-+/* mt7620 frequency scaling defines */
-+#define CLK_LUT_CFG 0x40
-+#define SLEEP_EN BIT(31)
-+
- struct systick_device {
- void __iomem *membase;
- struct clock_event_device dev;
-@@ -36,6 +40,8 @@ struct systick_device {
- int freq_scale;
- };
-
-+static void (*systick_freq_scaling)(struct systick_device *sdev, int status);
-+
- static void systick_set_clock_mode(enum clock_event_mode mode,
- struct clock_event_device *evt);
-
-@@ -87,6 +93,21 @@ static struct irqaction systick_irqactio
- .dev_id = &systick.dev,
- };
-
-+static inline void mt7620_freq_scaling(struct systick_device *sdev, int status)
-+{
-+ if (sdev->freq_scale == status)
-+ return;
-+
-+ sdev->freq_scale = status;
-+
-+ pr_info("%s: %s autosleep mode\n", systick.dev.name,
-+ (status) ? ("enable") : ("disable"));
-+ if (status)
-+ rt_sysc_w32(rt_sysc_r32(CLK_LUT_CFG) | SLEEP_EN, CLK_LUT_CFG);
-+ else
-+ rt_sysc_w32(rt_sysc_r32(CLK_LUT_CFG) & ~SLEEP_EN, CLK_LUT_CFG);
-+}
-+
- static void systick_set_clock_mode(enum clock_event_mode mode,
- struct clock_event_device *evt)
- {
-@@ -101,9 +122,13 @@ static void systick_set_clock_mode(enum
- sdev->irq_requested = 1;
- iowrite32(CFG_EXT_STK_EN | CFG_CNT_EN,
- systick.membase + SYSTICK_CONFIG);
-+ if (systick_freq_scaling)
-+ systick_freq_scaling(sdev, 1);
- break;
-
- case CLOCK_EVT_MODE_SHUTDOWN:
-+ if (systick_freq_scaling)
-+ systick_freq_scaling(sdev, 0);
- if (sdev->irq_requested)
- free_irq(systick.dev.irq, &systick_irqaction);
- sdev->irq_requested = 0;
-@@ -116,12 +141,23 @@ static void systick_set_clock_mode(enum
- }
- }
-
-+static const struct of_device_id systick_match[] = {
-+ { .compatible = "ralink,mt7620-systick", .data = mt7620_freq_scaling},
-+ {},
-+};
-+
- static void __init ralink_systick_init(struct device_node *np)
- {
-+ const struct of_device_id *match;
-+
- systick.membase = of_iomap(np, 0);
- if (!systick.membase)
- return;
-
-+ match = of_match_node(systick_match, np);
-+ if (match)
-+ systick_freq_scaling = match->data;
-+
- systick_irqaction.name = np->name;
- systick.dev.name = np->name;
- clockevents_calc_mult_shift(&systick.dev, SYSTICK_FREQ, 60);