lkml.org 
[lkml]   [2013]   [Sep]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 01/26] ARM: nomadik: move mtu setup to clocksource init
Date
MTU timer initialization is stuffed into .init_time callback, while
cpu8815_timer_init_of again maps addresses from the same device node.
Therefore, this patch moves mtu setup from to clocksource init.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
---
Cc: Olof Johansson <olof@lixom.net>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Alessandro Rubini <rubini@unipv.it>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: STEricsson <STEricsson_nomadik_linux@list.st.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
arch/arm/mach-nomadik/cpu-8815.c | 26 --------------------------
drivers/clocksource/nomadik-mtu.c | 11 +++++++++++
2 files changed, 11 insertions(+), 26 deletions(-)

diff --git a/arch/arm/mach-nomadik/cpu-8815.c b/arch/arm/mach-nomadik/cpu-8815.c
index 13e0df9..0fcb149 100644
--- a/arch/arm/mach-nomadik/cpu-8815.c
+++ b/arch/arm/mach-nomadik/cpu-8815.c
@@ -113,36 +113,10 @@ static void cpu8815_restart(enum reboot_mode mode, const char *cmd)
writel(1, srcbase + 0x18);
}

-/* Initial value for SRC control register: all timers use MXTAL/8 source */
-#define SRC_CR_INIT_MASK 0x00007fff
-#define SRC_CR_INIT_VAL 0x2aaa8000
-
static void __init cpu8815_timer_init_of(void)
{
- struct device_node *mtu;
- void __iomem *base;
- int irq;
- u32 src_cr;
-
/* We need this to be up now */
nomadik_clk_init();
-
- mtu = of_find_node_by_path("/mtu@101e2000");
- if (!mtu)
- return;
- base = of_iomap(mtu, 0);
- if (WARN_ON(!base))
- return;
- irq = irq_of_parse_and_map(mtu, 0);
-
- pr_info("Remapped MTU @ %p, irq: %d\n", base, irq);
-
- /* Configure timer sources in "system reset controller" ctrl reg */
- src_cr = readl(base);
- src_cr &= SRC_CR_INIT_MASK;
- src_cr |= SRC_CR_INIT_VAL;
- writel(src_cr, base);
-
clocksource_of_init();
}

diff --git a/drivers/clocksource/nomadik-mtu.c b/drivers/clocksource/nomadik-mtu.c
index 1b74bea..b9f97ba 100644
--- a/drivers/clocksource/nomadik-mtu.c
+++ b/drivers/clocksource/nomadik-mtu.c
@@ -257,12 +257,17 @@ void __init nmdk_timer_init(void __iomem *base, int irq)
__nmdk_timer_init(base, irq, pclk0, clk0);
}

+/* Initial value for SRC control register: all timers use MXTAL/8 source */
+#define SRC_CR_INIT_MASK 0x00007fff
+#define SRC_CR_INIT_VAL 0x2aaa8000
+
static void __init nmdk_timer_of_init(struct device_node *node)
{
struct clk *pclk;
struct clk *clk;
void __iomem *base;
int irq;
+ u32 src_cr;

base = of_iomap(node, 0);
if (!base)
@@ -280,6 +285,12 @@ static void __init nmdk_timer_of_init(struct device_node *node)
if (irq <= 0)
panic("Can't parse IRQ");

+ /* Configure timer sources in "system reset controller" ctrl reg */
+ src_cr = readl(base);
+ src_cr &= SRC_CR_INIT_MASK;
+ src_cr |= SRC_CR_INIT_VAL;
+ writel(src_cr, base);
+
__nmdk_timer_init(base, irq, pclk, clk);
}
CLOCKSOURCE_OF_DECLARE(nomadik_mtu, "st,nomadik-mtu",
--
1.7.10.4


\
 
 \ /
  Last update: 2013-09-18 20:41    [W:0.352 / U:0.284 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site