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| author | Shiraz Hashim <shiraz.hashim@st.com> | 2011-02-16 07:40:32 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-03-09 09:49:44 +0000 |
| commit | 5c881d9ae9480171f01921585e1893863d7ab421 (patch) | |
| tree | 1f25afe829901e5cfc79d21d4b99b005b1e8b69c /arch/arm/mach-spear6xx | |
| parent | 53688c51e412b7fd642e5c8eb8ba8ee19744c4ea (diff) | |
| download | kernel_samsung_smdk4412-5c881d9ae9480171f01921585e1893863d7ab421.zip kernel_samsung_smdk4412-5c881d9ae9480171f01921585e1893863d7ab421.tar.gz kernel_samsung_smdk4412-5c881d9ae9480171f01921585e1893863d7ab421.tar.bz2 | |
ARM: 6737/1: SPEAr: formalized timer support
Move platform specific timer initialization code is moved into platform
specific files.
Reviewed-by: Jamie Iles <jamie@jamieiles.com>
Reviewed-by: Stanley Miao <stanley.miao@windriver.com>
Signed-off-by: Shiraz Hashim <shiraz.hashim@st.com>
Signed-off-by: Rajeev Kumar <rajeev-dlh.kumar@st.com>
Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-spear6xx')
| -rw-r--r-- | arch/arm/mach-spear6xx/include/mach/generic.h | 3 | ||||
| -rw-r--r-- | arch/arm/mach-spear6xx/spear600_evb.c | 2 | ||||
| -rw-r--r-- | arch/arm/mach-spear6xx/spear6xx.c | 31 |
3 files changed, 34 insertions, 2 deletions
diff --git a/arch/arm/mach-spear6xx/include/mach/generic.h b/arch/arm/mach-spear6xx/include/mach/generic.h index 16205a5..e5967ed 100644 --- a/arch/arm/mach-spear6xx/include/mach/generic.h +++ b/arch/arm/mach-spear6xx/include/mach/generic.h @@ -31,9 +31,10 @@ /* Add spear6xx family device structure declarations here */ extern struct amba_device gpio_device[]; extern struct amba_device uart_device[]; -extern struct sys_timer spear_sys_timer; +extern struct sys_timer spear6xx_timer; /* Add spear6xx family function declarations here */ +void __init spear_setup_timer(void); void __init spear6xx_map_io(void); void __init spear6xx_init_irq(void); void __init spear6xx_init(void); diff --git a/arch/arm/mach-spear6xx/spear600_evb.c b/arch/arm/mach-spear6xx/spear600_evb.c index daff8d0..b0ed0df 100644 --- a/arch/arm/mach-spear6xx/spear600_evb.c +++ b/arch/arm/mach-spear6xx/spear600_evb.c @@ -46,6 +46,6 @@ MACHINE_START(SPEAR600, "ST-SPEAR600-EVB") .boot_params = 0x00000100, .map_io = spear6xx_map_io, .init_irq = spear6xx_init_irq, - .timer = &spear_sys_timer, + .timer = &spear6xx_timer, .init_machine = spear600_evb_init, MACHINE_END diff --git a/arch/arm/mach-spear6xx/spear6xx.c b/arch/arm/mach-spear6xx/spear6xx.c index f2fe14e..9cd3a68 100644 --- a/arch/arm/mach-spear6xx/spear6xx.c +++ b/arch/arm/mach-spear6xx/spear6xx.c @@ -155,3 +155,34 @@ void __init spear6xx_map_io(void) /* This will initialize clock framework */ clk_init(); } + +static void __init spear6xx_timer_init(void) +{ + char pclk_name[] = "pll3_48m_clk"; + struct clk *gpt_clk, *pclk; + + /* get the system timer clock */ + gpt_clk = clk_get_sys("gpt0", NULL); + if (IS_ERR(gpt_clk)) { + pr_err("%s:couldn't get clk for gpt\n", __func__); + BUG(); + } + + /* get the suitable parent clock for timer*/ + pclk = clk_get(NULL, pclk_name); + if (IS_ERR(pclk)) { + pr_err("%s:couldn't get %s as parent for gpt\n", + __func__, pclk_name); + BUG(); + } + + clk_set_parent(gpt_clk, pclk); + clk_put(gpt_clk); + clk_put(pclk); + + spear_setup_timer(); +} + +struct sys_timer spear6xx_timer = { + .init = spear6xx_timer_init, +}; |