aboutsummaryrefslogtreecommitdiff
path: root/arch/arm/mach-s5p6440/clock.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-s5p6440/clock.c')
-rw-r--r--arch/arm/mach-s5p6440/clock.c350
1 files changed, 249 insertions, 101 deletions
diff --git a/arch/arm/mach-s5p6440/clock.c b/arch/arm/mach-s5p6440/clock.c
index b2672e16e7a..ca6e48dce77 100644
--- a/arch/arm/mach-s5p6440/clock.c
+++ b/arch/arm/mach-s5p6440/clock.c
@@ -134,24 +134,6 @@ static struct clksrc_clk clk_mout_mpll = {
.reg_src = { .reg = S5P_CLK_SRC0, .shift = 1, .size = 1 },
};
-static struct clk clk_h_low = {
- .name = "hclk_low",
- .id = -1,
- .rate = 0,
- .parent = NULL,
- .ctrlbit = 0,
- .ops = &clk_ops_def_setrate,
-};
-
-static struct clk clk_p_low = {
- .name = "pclk_low",
- .id = -1,
- .rate = 0,
- .parent = NULL,
- .ctrlbit = 0,
- .ops = &clk_ops_def_setrate,
-};
-
enum perf_level {
L0 = 532*1000,
L1 = 266*1000,
@@ -247,23 +229,70 @@ static struct clk_ops s5p6440_clkarm_ops = {
.round_rate = s5p6440_armclk_round_rate,
};
-static unsigned long s5p6440_clk_doutmpll_get_rate(struct clk *clk)
-{
- unsigned long rate = clk_get_rate(clk->parent);
+static struct clksrc_clk clk_armclk = {
+ .clk = {
+ .name = "armclk",
+ .id = 1,
+ .parent = &clk_mout_apll.clk,
+ .ops = &s5p6440_clkarm_ops,
+ },
+ .reg_div = { .reg = S5P_CLK_DIV0, .shift = 0, .size = 4 },
+};
- if (__raw_readl(S5P_CLK_DIV0) & S5P_CLKDIV0_MPLL_MASK)
- rate /= 2;
+static struct clksrc_clk clk_dout_mpll = {
+ .clk = {
+ .name = "dout_mpll",
+ .id = -1,
+ .parent = &clk_mout_mpll.clk,
+ },
+ .reg_div = { .reg = S5P_CLK_DIV0, .shift = 4, .size = 1 },
+};
- return rate;
-}
+static struct clksrc_clk clk_hclk = {
+ .clk = {
+ .name = "clk_hclk",
+ .id = -1,
+ .parent = &clk_armclk.clk,
+ },
+ .reg_div = { .reg = S5P_CLK_DIV0, .shift = 8, .size = 4 },
+};
-static struct clk clk_dout_mpll = {
- .name = "dout_mpll",
- .id = -1,
- .parent = &clk_mout_mpll.clk,
- .ops = &(struct clk_ops) {
- .get_rate = s5p6440_clk_doutmpll_get_rate,
+static struct clksrc_clk clk_pclk = {
+ .clk = {
+ .name = "clk_pclk",
+ .id = -1,
+ .parent = &clk_hclk.clk,
},
+ .reg_div = { .reg = S5P_CLK_DIV0, .shift = 12, .size = 4 },
+};
+
+static struct clk *clkset_hclklow_list[] = {
+ &clk_mout_apll.clk,
+ &clk_mout_mpll.clk,
+};
+
+static struct clksrc_sources clkset_hclklow = {
+ .sources = clkset_hclklow_list,
+ .nr_sources = ARRAY_SIZE(clkset_hclklow_list),
+};
+
+static struct clksrc_clk clk_hclk_low = {
+ .clk = {
+ .name = "hclk_low",
+ .id = -1,
+ },
+ .sources = &clkset_hclklow,
+ .reg_src = { .reg = S5P_SYS_OTHERS, .shift = 6, .size = 1 },
+ .reg_div = { .reg = S5P_CLK_DIV3, .shift = 8, .size = 4 },
+};
+
+static struct clksrc_clk clk_pclk_low = {
+ .clk = {
+ .name = "pclk_low",
+ .id = -1,
+ .parent = &clk_hclk_low.clk,
+ },
+ .reg_div = { .reg = S5P_CLK_DIV3, .shift = 12, .size = 4 },
};
int s5p6440_clk48m_ctrl(struct clk *clk, int enable)
@@ -307,6 +336,11 @@ static int s5p6440_sclk_ctrl(struct clk *clk, int enable)
return s5p_gatectrl(S5P_CLK_GATE_SCLK0, clk, enable);
}
+static int s5p6440_sclk1_ctrl(struct clk *clk, int enable)
+{
+ return s5p_gatectrl(S5P_CLK_GATE_SCLK1, clk, enable);
+}
+
static int s5p6440_mem_ctrl(struct clk *clk, int enable)
{
return s5p_gatectrl(S5P_CLK_GATE_MEM0, clk, enable);
@@ -321,37 +355,37 @@ static struct clk init_clocks_disable[] = {
{
.name = "nand",
.id = -1,
- .parent = &clk_h,
+ .parent = &clk_hclk.clk,
.enable = s5p6440_mem_ctrl,
.ctrlbit = S5P_CLKCON_MEM0_HCLK_NFCON,
}, {
.name = "adc",
.id = -1,
- .parent = &clk_p_low,
+ .parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_TSADC,
}, {
.name = "i2c",
.id = -1,
- .parent = &clk_p_low,
+ .parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_IIC0,
}, {
.name = "i2s_v40",
.id = 0,
- .parent = &clk_p_low,
+ .parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_IIS2,
}, {
.name = "spi",
.id = 0,
- .parent = &clk_p_low,
+ .parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_SPI0,
}, {
.name = "spi",
.id = 1,
- .parent = &clk_p_low,
+ .parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_SPI1,
}, {
@@ -387,58 +421,124 @@ static struct clk init_clocks_disable[] = {
}, {
.name = "otg",
.id = -1,
- .parent = &clk_h_low,
+ .parent = &clk_hclk_low.clk,
.enable = s5p6440_hclk0_ctrl,
.ctrlbit = S5P_CLKCON_HCLK0_USB
}, {
.name = "post",
.id = -1,
- .parent = &clk_h_low,
+ .parent = &clk_hclk_low.clk,
.enable = s5p6440_hclk0_ctrl,
.ctrlbit = S5P_CLKCON_HCLK0_POST0
}, {
.name = "lcd",
.id = -1,
- .parent = &clk_h_low,
+ .parent = &clk_hclk_low.clk,
.enable = s5p6440_hclk1_ctrl,
.ctrlbit = S5P_CLKCON_HCLK1_DISPCON,
}, {
.name = "hsmmc",
.id = 0,
- .parent = &clk_h_low,
+ .parent = &clk_hclk_low.clk,
.enable = s5p6440_hclk0_ctrl,
.ctrlbit = S5P_CLKCON_HCLK0_HSMMC0,
}, {
.name = "hsmmc",
.id = 1,
- .parent = &clk_h_low,
+ .parent = &clk_hclk_low.clk,
.enable = s5p6440_hclk0_ctrl,
.ctrlbit = S5P_CLKCON_HCLK0_HSMMC1,
}, {
.name = "hsmmc",
.id = 2,
- .parent = &clk_h_low,
+ .parent = &clk_hclk_low.clk,
.enable = s5p6440_hclk0_ctrl,
.ctrlbit = S5P_CLKCON_HCLK0_HSMMC2,
}, {
.name = "rtc",
.id = -1,
- .parent = &clk_p_low,
+ .parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_RTC,
}, {
.name = "watchdog",
.id = -1,
- .parent = &clk_p_low,
+ .parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_WDT,
}, {
.name = "timers",
.id = -1,
- .parent = &clk_p_low,
+ .parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_PWM,
- }
+ }, {
+ .name = "hclk_fimgvg",
+ .id = -1,
+ .parent = &clk_hclk.clk,
+ .enable = s5p6440_hclk1_ctrl,
+ .ctrlbit = (1 << 2),
+ }, {
+ .name = "tsi",
+ .id = -1,
+ .parent = &clk_hclk_low.clk,
+ .enable = s5p6440_hclk1_ctrl,
+ .ctrlbit = (1 << 0),
+ }, {
+ .name = "pclk_fimgvg",
+ .id = -1,
+ .parent = &clk_pclk.clk,
+ .enable = s5p6440_pclk_ctrl,
+ .ctrlbit = (1 << 31),
+ }, {
+ .name = "dmc0",
+ .id = -1,
+ .parent = &clk_pclk.clk,
+ .enable = s5p6440_pclk_ctrl,
+ .ctrlbit = (1 << 30),
+ }, {
+ .name = "etm",
+ .id = -1,
+ .parent = &clk_pclk.clk,
+ .enable = s5p6440_pclk_ctrl,
+ .ctrlbit = (1 << 29),
+ }, {
+ .name = "dsim",
+ .id = -1,
+ .parent = &clk_pclk_low.clk,
+ .enable = s5p6440_pclk_ctrl,
+ .ctrlbit = (1 << 28),
+ }, {
+ .name = "gps",
+ .id = -1,
+ .parent = &clk_pclk_low.clk,
+ .enable = s5p6440_pclk_ctrl,
+ .ctrlbit = (1 << 25),
+ }, {
+ .name = "pcm",
+ .id = -1,
+ .parent = &clk_pclk_low.clk,
+ .enable = s5p6440_pclk_ctrl,
+ .ctrlbit = (1 << 8),
+ }, {
+ .name = "irom",
+ .id = -1,
+ .parent = &clk_hclk.clk,
+ .enable = s5p6440_hclk0_ctrl,
+ .ctrlbit = (1 << 25),
+ }, {
+ .name = "dma",
+ .id = -1,
+ .parent = &clk_hclk_low.clk,
+ .enable = s5p6440_hclk0_ctrl,
+ .ctrlbit = (1 << 12),
+ }, {
+ .name = "2d",
+ .id = -1,
+ .parent = &clk_hclk.clk,
+ .enable = s5p6440_hclk0_ctrl,
+ .ctrlbit = (1 << 8),
+ },
};
/*
@@ -448,34 +548,46 @@ static struct clk init_clocks[] = {
{
.name = "gpio",
.id = -1,
- .parent = &clk_p_low,
+ .parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_GPIO,
}, {
.name = "uart",
.id = 0,
- .parent = &clk_p_low,
+ .parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_UART0,
}, {
.name = "uart",
.id = 1,
- .parent = &clk_p_low,
+ .parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_UART1,
}, {
.name = "uart",
.id = 2,
- .parent = &clk_p_low,
+ .parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_UART2,
}, {
.name = "uart",
.id = 3,
- .parent = &clk_p_low,
+ .parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_UART3,
- }
+ }, {
+ .name = "mem",
+ .id = -1,
+ .parent = &clk_hclk.clk,
+ .enable = s5p6440_hclk0_ctrl,
+ .ctrlbit = (1 << 21),
+ }, {
+ .name = "intc",
+ .id = -1,
+ .parent = &clk_hclk.clk,
+ .enable = s5p6440_hclk0_ctrl,
+ .ctrlbit = (1 << 1),
+ },
};
static struct clk clk_iis_cd_v40 = {
@@ -488,20 +600,20 @@ static struct clk clk_pcm_cd = {
.id = -1,
};
-static struct clk *clkset_spi_mmc_list[] = {
+static struct clk *clkset_group1_list[] = {
&clk_mout_epll.clk,
- &clk_dout_mpll,
+ &clk_dout_mpll.clk,
&clk_fin_epll,
};
-static struct clksrc_sources clkset_spi_mmc = {
- .sources = clkset_spi_mmc_list,
- .nr_sources = ARRAY_SIZE(clkset_spi_mmc_list),
+static struct clksrc_sources clkset_group1 = {
+ .sources = clkset_group1_list,
+ .nr_sources = ARRAY_SIZE(clkset_group1_list),
};
static struct clk *clkset_uart_list[] = {
&clk_mout_epll.clk,
- &clk_dout_mpll
+ &clk_dout_mpll.clk,
};
static struct clksrc_sources clkset_uart = {
@@ -509,6 +621,19 @@ static struct clksrc_sources clkset_uart = {
.nr_sources = ARRAY_SIZE(clkset_uart_list),
};
+static struct clk *clkset_audio_list[] = {
+ &clk_mout_epll.clk,
+ &clk_dout_mpll.clk,
+ &clk_fin_epll,
+ &clk_iis_cd_v40,
+ &clk_pcm_cd,
+};
+
+static struct clksrc_sources clkset_audio = {
+ .sources = clkset_audio_list,
+ .nr_sources = ARRAY_SIZE(clkset_audio_list),
+};
+
static struct clksrc_clk clksrcs[] = {
{
.clk = {
@@ -517,7 +642,7 @@ static struct clksrc_clk clksrcs[] = {
.ctrlbit = S5P_CLKCON_SCLK0_MMC0,
.enable = s5p6440_sclk_ctrl,
},
- .sources = &clkset_spi_mmc,
+ .sources = &clkset_group1,
.reg_src = { .reg = S5P_CLK_SRC0, .shift = 18, .size = 2 },
.reg_div = { .reg = S5P_CLK_DIV1, .shift = 0, .size = 4 },
}, {
@@ -527,7 +652,7 @@ static struct clksrc_clk clksrcs[] = {
.ctrlbit = S5P_CLKCON_SCLK0_MMC1,
.enable = s5p6440_sclk_ctrl,
},
- .sources = &clkset_spi_mmc,
+ .sources = &clkset_group1,
.reg_src = { .reg = S5P_CLK_SRC0, .shift = 20, .size = 2 },
.reg_div = { .reg = S5P_CLK_DIV1, .shift = 4, .size = 4 },
}, {
@@ -537,7 +662,7 @@ static struct clksrc_clk clksrcs[] = {
.ctrlbit = S5P_CLKCON_SCLK0_MMC2,
.enable = s5p6440_sclk_ctrl,
},
- .sources = &clkset_spi_mmc,
+ .sources = &clkset_group1,
.reg_src = { .reg = S5P_CLK_SRC0, .shift = 22, .size = 2 },
.reg_div = { .reg = S5P_CLK_DIV1, .shift = 8, .size = 4 },
}, {
@@ -557,7 +682,7 @@ static struct clksrc_clk clksrcs[] = {
.ctrlbit = S5P_CLKCON_SCLK0_SPI0,
.enable = s5p6440_sclk_ctrl,
},
- .sources = &clkset_spi_mmc,
+ .sources = &clkset_group1,
.reg_src = { .reg = S5P_CLK_SRC0, .shift = 14, .size = 2 },
.reg_div = { .reg = S5P_CLK_DIV2, .shift = 0, .size = 4 },
}, {
@@ -567,17 +692,63 @@ static struct clksrc_clk clksrcs[] = {
.ctrlbit = S5P_CLKCON_SCLK0_SPI1,
.enable = s5p6440_sclk_ctrl,
},
- .sources = &clkset_spi_mmc,
+ .sources = &clkset_group1,
.reg_src = { .reg = S5P_CLK_SRC0, .shift = 16, .size = 2 },
.reg_div = { .reg = S5P_CLK_DIV2, .shift = 4, .size = 4 },
- }
+ }, {
+ .clk = {
+ .name = "sclk_post",
+ .id = -1,
+ .ctrlbit = (1 << 10),
+ .enable = s5p6440_sclk_ctrl,
+ },
+ .sources = &clkset_group1,
+ .reg_src = { .reg = S5P_CLK_SRC0, .shift = 26, .size = 2 },
+ .reg_div = { .reg = S5P_CLK_DIV1, .shift = 12, .size = 4 },
+ }, {
+ .clk = {
+ .name = "sclk_dispcon",
+ .id = -1,
+ .ctrlbit = (1 << 1),
+ .enable = s5p6440_sclk1_ctrl,
+ },
+ .sources = &clkset_group1,
+ .reg_src = { .reg = S5P_CLK_SRC1, .shift = 4, .size = 2 },
+ .reg_div = { .reg = S5P_CLK_DIV3, .shift = 0, .size = 4 },
+ }, {
+ .clk = {
+ .name = "sclk_fimgvg",
+ .id = -1,
+ .ctrlbit = (1 << 2),
+ .enable = s5p6440_sclk1_ctrl,
+ },
+ .sources = &clkset_group1,
+ .reg_src = { .reg = S5P_CLK_SRC1, .shift = 8, .size = 2 },
+ .reg_div = { .reg = S5P_CLK_DIV3, .shift = 4, .size = 4 },
+ }, {
+ .clk = {
+ .name = "sclk_audio2",
+ .id = -1,
+ .ctrlbit = (1 << 11),
+ .enable = s5p6440_sclk_ctrl,
+ },
+ .sources = &clkset_audio,
+ .reg_src = { .reg = S5P_CLK_SRC1, .shift = 0, .size = 3 },
+ .reg_div = { .reg = S5P_CLK_DIV2, .shift = 24, .size = 4 },
+ },
};
/* Clock initialisation code */
-static struct clksrc_clk *init_parents[] = {
+static struct clksrc_clk *sysclks[] = {
&clk_mout_apll,
&clk_mout_epll,
&clk_mout_mpll,
+ &clk_dout_mpll,
+ &clk_armclk,
+ &clk_hclk,
+ &clk_pclk,
+ &clk_hclk_low,
+ &clk_pclk_low,
};
void __init_or_cpufreq s5p6440_setup_clocks(void)
@@ -593,21 +764,13 @@ void __init_or_cpufreq s5p6440_setup_clocks(void)
unsigned long apll;
unsigned long mpll;
unsigned int ptr;
- u32 clkdiv0;
- u32 clkdiv3;
/* Set S5P6440 functions for clk_fout_epll */
clk_fout_epll.enable = s5p6440_epll_enable;
clk_fout_epll.ops = &s5p6440_epll_ops;
- /* Set S5P6440 functions for arm clock */
- clk_arm.parent = &clk_mout_apll.clk;
- clk_arm.ops = &s5p6440_clkarm_ops;
clk_48m.enable = s5p6440_clk48m_ctrl;
- clkdiv0 = __raw_readl(S5P_CLK_DIV0);
- clkdiv3 = __raw_readl(S5P_CLK_DIV3);
-
xtal_clk = clk_get(NULL, "ext_xtal");
BUG_ON(IS_ERR(xtal_clk));
@@ -619,41 +782,28 @@ void __init_or_cpufreq s5p6440_setup_clocks(void)
mpll = s5p_get_pll45xx(xtal, __raw_readl(S5P_MPLL_CON), pll_4502);
apll = s5p_get_pll45xx(xtal, __raw_readl(S5P_APLL_CON), pll_4502);
+ clk_fout_mpll.rate = mpll;
+ clk_fout_epll.rate = epll;
+ clk_fout_apll.rate = apll;
+
printk(KERN_INFO "S5P6440: PLL settings, A=%ld.%ldMHz, M=%ld.%ldMHz," \
" E=%ld.%ldMHz\n",
print_mhz(apll), print_mhz(mpll), print_mhz(epll));
- fclk = apll / GET_DIV(clkdiv0, S5P_CLKDIV0_ARM);
- hclk = fclk / GET_DIV(clkdiv0, S5P_CLKDIV0_HCLK);
- pclk = hclk / GET_DIV(clkdiv0, S5P_CLKDIV0_PCLK);
-
- if (__raw_readl(S5P_OTHERS) & S5P_OTHERS_HCLK_LOW_SEL_MPLL) {
- /* Asynchronous mode */
- hclk_low = mpll / GET_DIV(clkdiv3, S5P_CLKDIV3_HCLK_LOW);
- } else {
- /* Synchronous mode */
- hclk_low = apll / GET_DIV(clkdiv3, S5P_CLKDIV3_HCLK_LOW);
- }
-
- pclk_low = hclk_low / GET_DIV(clkdiv3, S5P_CLKDIV3_PCLK_LOW);
+ fclk = clk_get_rate(&clk_armclk.clk);
+ hclk = clk_get_rate(&clk_hclk.clk);
+ pclk = clk_get_rate(&clk_pclk.clk);
+ hclk_low = clk_get_rate(&clk_hclk_low.clk);
+ pclk_low = clk_get_rate(&clk_pclk_low.clk);
printk(KERN_INFO "S5P6440: HCLK=%ld.%ldMHz, HCLK_LOW=%ld.%ldMHz," \
" PCLK=%ld.%ldMHz, PCLK_LOW=%ld.%ldMHz\n",
print_mhz(hclk), print_mhz(hclk_low),
print_mhz(pclk), print_mhz(pclk_low));
- clk_fout_mpll.rate = mpll;
- clk_fout_epll.rate = epll;
- clk_fout_apll.rate = apll;
-
clk_f.rate = fclk;
clk_h.rate = hclk;
clk_p.rate = pclk;
- clk_h_low.rate = hclk_low;
- clk_p_low.rate = pclk_low;
-
- for (ptr = 0; ptr < ARRAY_SIZE(init_parents); ptr++)
- s3c_set_clksrc(init_parents[ptr], true);
for (ptr = 0; ptr < ARRAY_SIZE(clksrcs); ptr++)
s3c_set_clksrc(&clksrcs[ptr], true);
@@ -661,13 +811,8 @@ void __init_or_cpufreq s5p6440_setup_clocks(void)
static struct clk *clks[] __initdata = {
&clk_ext,
- &clk_mout_epll.clk,
- &clk_mout_mpll.clk,
- &clk_dout_mpll,
&clk_iis_cd_v40,
&clk_pcm_cd,
- &clk_p_low,
- &clk_h_low,
};
void __init s5p6440_register_clocks(void)
@@ -680,6 +825,9 @@ void __init s5p6440_register_clocks(void)
if (ret > 0)
printk(KERN_ERR "Failed to register %u clocks\n", ret);
+ for (ptr = 0; ptr < ARRAY_SIZE(sysclks); ptr++)
+ s3c_register_clksrc(sysclks[ptr], 1);
+
s3c_register_clksrc(clksrcs, ARRAY_SIZE(clksrcs));
s3c_register_clocks(init_clocks, ARRAY_SIZE(init_clocks));
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-11-27 15:25:48 +0000