Mirrors/u-boot
2
0
Fork 0
mirror of https://github.com/AsahiLinux/u-boot synced 2024-11-10 23:24:38 +00:00
Code Issues Projects Releases Packages Wiki Activity

arm: exynos: add display clocks for Exynos5800

Browse source 
Add get_lcd_clk and set_lcd_clk callbacks for Exynos5800 needed by
exynos video driver.

Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
This commit is contained in:
Ajay Kumar 2015-03-04 19:05:24 +05:30 committed by Minkyu Kang
parent d7e1f02efc
commit 70b4fb660d
2 changed files with 65 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

65
arch/arm/cpu/armv7/exynos/clock.c
View file

@ -14,7 +14,6 @@
#define PLL_DIV_1024 1024
#define PLL_DIV_65535 65535
#define PLL_DIV_65536 65536
/* *
* This structure is to store the src bit, div bit and prediv bit
* positions of the peripheral clocks of the src and div registers
@ -1028,6 +1027,40 @@ static unsigned long exynos5420_get_lcd_clk(void)
return pclk;
}
static unsigned long exynos5800_get_lcd_clk(void)
{
struct exynos5420_clock *clk =
(struct exynos5420_clock *)samsung_get_base_clock();
unsigned long sclk;
unsigned int sel;
unsigned int ratio;
/*
* CLK_SRC_DISP10
* CLKMUX_FIMD1 [6:4]
*/
sel = (readl(&clk->src_disp10) >> 4) & 0x7;
if (sel) {
/*
* Mapping of CLK_SRC_DISP10 CLKMUX_FIMD1 [6:4] values into
* PLLs. The first element is a placeholder to bypass the
* default settig.
*/
const int reg_map[] = {0, CPLL, DPLL, MPLL, SPLL, IPLL, EPLL,
RPLL};
sclk = get_pll_clk(reg_map[sel]);
} else
sclk = CONFIG_SYS_CLK_FREQ;
/*
* CLK_DIV_DISP10
* FIMD1_RATIO [3:0]
*/
ratio = readl(&clk->div_disp10) & 0xf;
return sclk / (ratio + 1);
}
void exynos4_set_lcd_clk(void)
{
struct exynos4_clock *clk =
@ -1159,6 +1192,28 @@ void exynos5420_set_lcd_clk(void)
writel(cfg, &clk->div_disp10);
}
void exynos5800_set_lcd_clk(void)
{
struct exynos5420_clock *clk =
(struct exynos5420_clock *)samsung_get_base_clock();
unsigned int cfg;
/*
* Use RPLL for pixel clock
* CLK_SRC_DISP10 CLKMUX_FIMD1 [6:4]
* ==================
* 111: SCLK_RPLL
*/
cfg = readl(&clk->src_disp10) | (0x7 << 4);
writel(cfg, &clk->src_disp10);
/*
* CLK_DIV_DISP10
* FIMD1_RATIO [3:0]
*/
clrsetbits_le32(&clk->div_disp10, 0xf << 0, 0x0 << 0);
}
void exynos4_set_mipi_clk(void)
{
struct exynos4_clock *clk =
@ -1646,8 +1701,10 @@ unsigned long get_lcd_clk(void)
if (cpu_is_exynos4())
return exynos4_get_lcd_clk();
else {
if (proid_is_exynos5420() || proid_is_exynos5800())
if (proid_is_exynos5420())
return exynos5420_get_lcd_clk();
else if (proid_is_exynos5800())
return exynos5800_get_lcd_clk();
else
return exynos5_get_lcd_clk();
}
@ -1660,8 +1717,10 @@ void set_lcd_clk(void)
else {
if (proid_is_exynos5250())
exynos5_set_lcd_clk();
else if (proid_is_exynos5420() || proid_is_exynos5800())
else if (proid_is_exynos5420())
exynos5420_set_lcd_clk();
else
exynos5800_set_lcd_clk();
}
}

3
arch/arm/include/asm/arch-exynos/clk.h
View file

@ -16,6 +16,9 @@
#define BPLL 5
#define RPLL 6
#define SPLL 7
#define CPLL 8
#define DPLL 9
#define IPLL 10
#define MASK_PRE_RATIO(x) (0xff << ((x << 4) + 8))
#define MASK_RATIO(x) (0xf << (x << 4))