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Diffstat (limited to 'target/linux/mvebu/patches-3.10/0168-clocksource-armada-370-xp-Introduce-new-compatibles.patch')
-rw-r--r--target/linux/mvebu/patches-3.10/0168-clocksource-armada-370-xp-Introduce-new-compatibles.patch101
1 files changed, 101 insertions, 0 deletions
diff --git a/target/linux/mvebu/patches-3.10/0168-clocksource-armada-370-xp-Introduce-new-compatibles.patch b/target/linux/mvebu/patches-3.10/0168-clocksource-armada-370-xp-Introduce-new-compatibles.patch
new file mode 100644
index 0000000000..f028dfabc0
--- /dev/null
+++ b/target/linux/mvebu/patches-3.10/0168-clocksource-armada-370-xp-Introduce-new-compatibles.patch
@@ -0,0 +1,101 @@
+From 9cb47bf175645d15f97e6d964dd4a4f089275ef5 Mon Sep 17 00:00:00 2001
+From: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
+Date: Tue, 13 Aug 2013 11:43:13 -0300
+Subject: [PATCH 168/203] clocksource: armada-370-xp: Introduce new compatibles
+
+The Armada XP SoC clocksource driver cannot work without the 25 MHz
+fixed timer. Therefore it's appropriate to introduce a new compatible
+string and use it to set the 25 MHz fixed timer.
+
+The 'marvell,timer-25MHz' property will be marked as deprecated.
+
+Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
+Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
+Reviewed-by: Andrew Lunn <andrew@lunn.ch>
+---
+ drivers/clocksource/time-armada-370-xp.c | 54 +++++++++++++++++++++++---------
+ 1 file changed, 39 insertions(+), 15 deletions(-)
+
+--- a/drivers/clocksource/time-armada-370-xp.c
++++ b/drivers/clocksource/time-armada-370-xp.c
+@@ -13,6 +13,19 @@
+ *
+ * Timer 0 is used as free-running clocksource, while timer 1 is
+ * used as clock_event_device.
++ *
++ * ---
++ * Clocksource driver for Armada 370 and Armada XP SoC.
++ * This driver implements one compatible string for each SoC, given
++ * each has its own characteristics:
++ *
++ * * Armada 370 has no 25 MHz fixed timer.
++ *
++ * * Armada XP cannot work properly without such 25 MHz fixed timer as
++ * doing otherwise leads to using a clocksource whose frequency varies
++ * when doing cpufreq frequency changes.
++ *
++ * See Documentation/devicetree/bindings/timer/marvell,armada-370-xp-timer.txt
+ */
+
+ #include <linux/init.h>
+@@ -212,7 +225,7 @@ static struct local_timer_ops armada_370
+ .stop = armada_370_xp_timer_stop,
+ };
+
+-static void __init armada_370_xp_timer_init(struct device_node *np)
++static void __init armada_370_xp_timer_common_init(struct device_node *np)
+ {
+ u32 clr = 0, set = 0;
+ int res;
+@@ -221,20 +234,10 @@ static void __init armada_370_xp_timer_i
+ WARN_ON(!timer_base);
+ local_base = of_iomap(np, 1);
+
+- if (of_find_property(np, "marvell,timer-25Mhz", NULL)) {
+- /* The fixed 25MHz timer is available so let's use it */
++ if (timer25Mhz)
+ set = TIMER0_25MHZ;
+- timer_clk = 25000000;
+- } else {
+- unsigned long rate = 0;
+- struct clk *clk = of_clk_get(np, 0);
+- WARN_ON(IS_ERR(clk));
+- rate = clk_get_rate(clk);
+- timer_clk = rate / TIMER_DIVIDER;
+-
++ else
+ clr = TIMER0_25MHZ;
+- timer25Mhz = false;
+- }
+ timer_ctrl_clrset(clr, set);
+ local_timer_ctrl_clrset(clr, set);
+
+@@ -288,5 +291,26 @@ static void __init armada_370_xp_timer_i
+ #endif
+ }
+ }
+-CLOCKSOURCE_OF_DECLARE(armada_370_xp, "marvell,armada-370-xp-timer",
+- armada_370_xp_timer_init);
++
++static void __init armada_xp_timer_init(struct device_node *np)
++{
++ /* The fixed 25MHz timer is required, timer25Mhz is true by default */
++ timer_clk = 25000000;
++
++ armada_370_xp_timer_common_init(np);
++}
++CLOCKSOURCE_OF_DECLARE(armada_xp, "marvell,armada-xp-timer",
++ armada_xp_timer_init);
++
++static void __init armada_370_timer_init(struct device_node *np)
++{
++ struct clk *clk = of_clk_get(np, 0);
++
++ WARN_ON(IS_ERR(clk));
++ timer_clk = clk_get_rate(clk) / TIMER_DIVIDER;
++ timer25Mhz = false;
++
++ armada_370_xp_timer_common_init(np);
++}
++CLOCKSOURCE_OF_DECLARE(armada_370, "marvell,armada-370-timer",
++ armada_370_timer_init);