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authorThomas Abraham <thomas.ab@samsung.com>2010-05-17 09:38:52 +0900
committerBen Dooks <ben-linux@fluff.org>2010-05-17 10:37:37 +0900
commitf445dbd5af7863dd7dce4685e39980419d4144eb (patch)
tree194f8c8302003aaeef8d9df7e37b8156e5bcddb2 /arch/arm/mach-s5pv210/clock.c
parentf44cf78b6b475116a4d3c98576f8697dd4ca7e79 (diff)
ARM: S5PV210: Add support for VPLL
This patch adds the following. 1. Adds 'clk_sclk_hdmi27m' clock to represent the HDMI 27MHz clock. 2. Adds 'clk_vpllsrc; clock of type clksrc_clk to represent the input clock for VPLL. 3. Adds 'clk_sclk_vpll' clock of type clksrc_clk to represent the output of the MUX_VPLL mux. 4. Add clk_sclk_hdmi27m, clk_vpllsrc and clk_sclk_vpll to the list of clocks to be registered. 5. Adds boot time print of 'clk_sclk_vpll' clock rate. 6. Adds 'clk_fout_vpll' clock to plat-s5p such that it is reusable on other s5p platforms. Signed-off-by: Thomas Abraham <thomas.ab@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Diffstat (limited to 'arch/arm/mach-s5pv210/clock.c')
-rw-r--r--arch/arm/mach-s5pv210/clock.c63
1 files changed, 61 insertions, 2 deletions
diff --git a/arch/arm/mach-s5pv210/clock.c b/arch/arm/mach-s5pv210/clock.c
index 315955da0d0..c86bff525db 100644
--- a/arch/arm/mach-s5pv210/clock.c
+++ b/arch/arm/mach-s5pv210/clock.c
@@ -173,6 +173,57 @@ static int s5pv210_clk_ip3_ctrl(struct clk *clk, int enable)
return s5p_gatectrl(S5P_CLKGATE_IP3, clk, enable);
}
+static int s5pv210_clk_mask0_ctrl(struct clk *clk, int enable)
+{
+ return s5p_gatectrl(S5P_CLK_SRC_MASK0, clk, enable);
+}
+
+static struct clk clk_sclk_hdmi27m = {
+ .name = "sclk_hdmi27m",
+ .id = -1,
+ .rate = 27000000,
+};
+
+static struct clk *clkset_vpllsrc_list[] = {
+ [0] = &clk_fin_vpll,
+ [1] = &clk_sclk_hdmi27m,
+};
+
+static struct clksrc_sources clkset_vpllsrc = {
+ .sources = clkset_vpllsrc_list,
+ .nr_sources = ARRAY_SIZE(clkset_vpllsrc_list),
+};
+
+static struct clksrc_clk clk_vpllsrc = {
+ .clk = {
+ .name = "vpll_src",
+ .id = -1,
+ .enable = s5pv210_clk_mask0_ctrl,
+ .ctrlbit = (1 << 7),
+ },
+ .sources = &clkset_vpllsrc,
+ .reg_src = { .reg = S5P_CLK_SRC1, .shift = 28, .size = 1 },
+};
+
+static struct clk *clkset_sclk_vpll_list[] = {
+ [0] = &clk_vpllsrc.clk,
+ [1] = &clk_fout_vpll,
+};
+
+static struct clksrc_sources clkset_sclk_vpll = {
+ .sources = clkset_sclk_vpll_list,
+ .nr_sources = ARRAY_SIZE(clkset_sclk_vpll_list),
+};
+
+static struct clksrc_clk clk_sclk_vpll = {
+ .clk = {
+ .name = "sclk_vpll",
+ .id = -1,
+ },
+ .sources = &clkset_sclk_vpll,
+ .reg_src = { .reg = S5P_CLK_SRC0, .shift = 12, .size = 1 },
+};
+
static unsigned long s5pv210_clk_imem_get_rate(struct clk *clk)
{
return clk_get_rate(clk->parent) / 2;
@@ -402,12 +453,15 @@ static struct clksrc_clk *sysclks[] = {
&clk_pclk_msys,
&clk_pclk_dsys,
&clk_pclk_psys,
+ &clk_vpllsrc,
+ &clk_sclk_vpll,
};
void __init_or_cpufreq s5pv210_setup_clocks(void)
{
struct clk *xtal_clk;
unsigned long xtal;
+ unsigned long vpllsrc;
unsigned long armclk;
unsigned long hclk_msys;
unsigned long hclk_dsys;
@@ -418,6 +472,7 @@ void __init_or_cpufreq s5pv210_setup_clocks(void)
unsigned long apll;
unsigned long mpll;
unsigned long epll;
+ unsigned long vpll;
unsigned int ptr;
u32 clkdiv0, clkdiv1;
@@ -440,13 +495,16 @@ void __init_or_cpufreq s5pv210_setup_clocks(void)
apll = s5p_get_pll45xx(xtal, __raw_readl(S5P_APLL_CON), pll_4508);
mpll = s5p_get_pll45xx(xtal, __raw_readl(S5P_MPLL_CON), pll_4502);
epll = s5p_get_pll45xx(xtal, __raw_readl(S5P_EPLL_CON), pll_4500);
+ vpllsrc = clk_get_rate(&clk_vpllsrc.clk);
+ vpll = s5p_get_pll45xx(vpllsrc, __raw_readl(S5P_VPLL_CON), pll_4502);
clk_fout_apll.rate = apll;
clk_fout_mpll.rate = mpll;
clk_fout_epll.rate = epll;
+ clk_fout_vpll.rate = vpll;
- printk(KERN_INFO "S5PV210: PLL settings, A=%ld, M=%ld, E=%ld",
- apll, mpll, epll);
+ printk(KERN_INFO "S5PV210: PLL settings, A=%ld, M=%ld, E=%ld V=%ld",
+ apll, mpll, epll, vpll);
armclk = clk_get_rate(&clk_armclk.clk);
hclk_msys = clk_get_rate(&clk_hclk_msys.clk);
@@ -470,6 +528,7 @@ void __init_or_cpufreq s5pv210_setup_clocks(void)
}
static struct clk *clks[] __initdata = {
+ &clk_sclk_hdmi27m,
};
void __init s5pv210_register_clocks(void)