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path: root/src/cpu/samsung/exynos5420/clock.c
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Diffstat (limited to 'src/cpu/samsung/exynos5420/clock.c')
-rw-r--r--src/cpu/samsung/exynos5420/clock.c131
1 files changed, 59 insertions, 72 deletions
diff --git a/src/cpu/samsung/exynos5420/clock.c b/src/cpu/samsung/exynos5420/clock.c
index 8a8e58954a..f7436f22c3 100644
--- a/src/cpu/samsung/exynos5420/clock.c
+++ b/src/cpu/samsung/exynos5420/clock.c
@@ -17,13 +17,12 @@
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include <console/console.h>
+#include <assert.h>
#include <stdlib.h>
#include <timer.h>
-#include <assert.h>
#include <arch/io.h>
+#include <console/console.h>
#include "clk.h"
-#include "cpu.h"
#include "periph.h"
/* input clock of PLL: SMDK5420 has 24MHz input clock */
@@ -43,40 +42,39 @@ static struct st_epll_con_val epll_div[] = {
/* exynos5: return pll clock frequency */
unsigned long get_pll_clk(int pllreg)
{
- struct exynos5420_clock *clk = samsung_get_base_clock();
unsigned long r, m, p, s, k = 0, mask, fout;
unsigned int freq;
switch (pllreg) {
case APLL:
- r = readl(&clk->apll_con0);
+ r = readl(&exynos_clock->apll_con0);
break;
case MPLL:
- r = readl(&clk->mpll_con0);
+ r = readl(&exynos_clock->mpll_con0);
break;
case EPLL:
- r = readl(&clk->epll_con0);
- k = readl(&clk->epll_con1);
+ r = readl(&exynos_clock->epll_con0);
+ k = readl(&exynos_clock->epll_con1);
break;
case VPLL:
- r = readl(&clk->vpll_con0);
- k = readl(&clk->vpll_con1);
+ r = readl(&exynos_clock->vpll_con0);
+ k = readl(&exynos_clock->vpll_con1);
break;
case BPLL:
- r = readl(&clk->bpll_con0);
+ r = readl(&exynos_clock->bpll_con0);
break;
case RPLL:
- r = readl(&clk->rpll_con0);
- k = readl(&clk->rpll_con1);
+ r = readl(&exynos_clock->rpll_con0);
+ k = readl(&exynos_clock->rpll_con1);
break;
case SPLL:
- r = readl(&clk->spll_con0);
+ r = readl(&exynos_clock->spll_con0);
break;
case CPLL:
- r = readl(&clk->cpll_con0);
+ r = readl(&exynos_clock->cpll_con0);
break;
case DPLL:
- r = readl(&clk->dpll_con0);
+ r = readl(&exynos_clock->dpll_con0);
break;
default:
printk(BIOS_DEBUG, "Unsupported PLL (%d)\n", pllreg);
@@ -168,52 +166,51 @@ unsigned long clock_get_periph_rate(enum periph_id peripheral)
{
unsigned long sclk;
unsigned int src, div;
- struct exynos5420_clock *clk = samsung_get_base_clock();
switch (peripheral) {
case PERIPH_ID_UART0:
- src = (readl(&clk->clk_src_peric0) >> 4) & 0x7;
- div = (readl(&clk->clk_div_peric0) >> 8) & 0xf;
+ src = (readl(&exynos_clock->clk_src_peric0) >> 4) & 0x7;
+ div = (readl(&exynos_clock->clk_div_peric0) >> 8) & 0xf;
break;
case PERIPH_ID_UART1:
- src = (readl(&clk->clk_src_peric0) >> 8) & 0x7;
- div = (readl(&clk->clk_div_peric0) >> 12) & 0xf;
+ src = (readl(&exynos_clock->clk_src_peric0) >> 8) & 0x7;
+ div = (readl(&exynos_clock->clk_div_peric0) >> 12) & 0xf;
break;
case PERIPH_ID_UART2:
- src = (readl(&clk->clk_src_peric0) >> 12) & 0x7;
- div = (readl(&clk->clk_div_peric0) >> 16) & 0xf;
+ src = (readl(&exynos_clock->clk_src_peric0) >> 12) & 0x7;
+ div = (readl(&exynos_clock->clk_div_peric0) >> 16) & 0xf;
break;
case PERIPH_ID_UART3:
- src = (readl(&clk->clk_src_peric0) >> 16) & 0x7;
- div = (readl(&clk->clk_div_peric0) >> 20) & 0xf;
+ src = (readl(&exynos_clock->clk_src_peric0) >> 16) & 0x7;
+ div = (readl(&exynos_clock->clk_div_peric0) >> 20) & 0xf;
break;
case PERIPH_ID_PWM0:
case PERIPH_ID_PWM1:
case PERIPH_ID_PWM2:
case PERIPH_ID_PWM3:
case PERIPH_ID_PWM4:
- src = (readl(&clk->clk_src_peric0) >> 24) & 0x7;
- div = (readl(&clk->clk_div_peric0) >> 28) & 0x7;
+ src = (readl(&exynos_clock->clk_src_peric0) >> 24) & 0x7;
+ div = (readl(&exynos_clock->clk_div_peric0) >> 28) & 0x7;
break;
case PERIPH_ID_SPI0:
- src = (readl(&clk->clk_src_peric1) >> 20) & 0x7;
- div = (readl(&clk->clk_div_peric1) >> 20) & 0xf;
+ src = (readl(&exynos_clock->clk_src_peric1) >> 20) & 0x7;
+ div = (readl(&exynos_clock->clk_div_peric1) >> 20) & 0xf;
break;
case PERIPH_ID_SPI1:
- src = (readl(&clk->clk_src_peric1) >> 24) & 0x7;
- div = (readl(&clk->clk_div_peric1) >> 24) & 0xf;
+ src = (readl(&exynos_clock->clk_src_peric1) >> 24) & 0x7;
+ div = (readl(&exynos_clock->clk_div_peric1) >> 24) & 0xf;
break;
case PERIPH_ID_SPI2:
- src = (readl(&clk->clk_src_peric1) >> 28) & 0x7;
- div = (readl(&clk->clk_div_peric1) >> 28) & 0xf;
+ src = (readl(&exynos_clock->clk_src_peric1) >> 28) & 0x7;
+ div = (readl(&exynos_clock->clk_div_peric1) >> 28) & 0xf;
break;
case PERIPH_ID_SPI3: /* aka SPI0_ISP */
- src = (readl(&clk->clk_src_isp) >> 16) & 0x7;
- div = (readl(&clk->clk_div_isp0) >> 0) & 0x7;
+ src = (readl(&exynos_clock->clk_src_isp) >> 16) & 0x7;
+ div = (readl(&exynos_clock->clk_div_isp0) >> 0) & 0x7;
break;
case PERIPH_ID_SPI4: /* aka SPI1_ISP */
- src = (readl(&clk->clk_src_isp) >> 12) & 0x7;
- div = (readl(&clk->clk_div_isp1) >> 4) & 0x7;
+ src = (readl(&exynos_clock->clk_src_isp) >> 12) & 0x7;
+ div = (readl(&exynos_clock->clk_div_isp1) >> 4) & 0x7;
break;
case PERIPH_ID_I2C0:
case PERIPH_ID_I2C1:
@@ -232,7 +229,7 @@ unsigned long clock_get_periph_rate(enum periph_id peripheral)
* TODO: Add a helper function like with the peripheral clock
* select fields?
*/
- src = (readl(&clk->clk_src_top1) >> 8) & 0x3;
+ src = (readl(&exynos_clock->clk_src_top1) >> 8) & 0x3;
if (src == 0x0)
src = CPLL;
else if (src == 0x1)
@@ -243,7 +240,7 @@ unsigned long clock_get_periph_rate(enum periph_id peripheral)
return -1;
sclk = get_pll_clk(src);
- div = ((readl(&clk->clk_div_top1) >> 8) & 0x3f) + 1;
+ div = ((readl(&exynos_clock->clk_div_top1) >> 8) & 0x3f) + 1;
return sclk / div;
default:
printk(BIOS_DEBUG, "%s: invalid peripheral %d",
@@ -265,13 +262,12 @@ unsigned long clock_get_periph_rate(enum periph_id peripheral)
/* exynos5: return ARM clock frequency */
unsigned long get_arm_clk(void)
{
- struct exynos5420_clock *clk = samsung_get_base_clock();
unsigned long div;
unsigned long armclk;
unsigned int arm_ratio;
unsigned int arm2_ratio;
- div = readl(&clk->clk_div_cpu0);
+ div = readl(&exynos_clock->clk_div_cpu0);
/* ARM_RATIO: [2:0], ARM2_RATIO: [30:28] */
arm_ratio = (div >> 0) & 0x7;
@@ -286,12 +282,11 @@ unsigned long get_arm_clk(void)
/* exynos5: get the mmc clock */
static unsigned long get_mmc_clk(int dev_index)
{
- struct exynos5420_clock *clk = samsung_get_base_clock();
unsigned long uclk, sclk;
unsigned int sel, ratio;
int shift = 0;
- sel = readl(&clk->clk_src_fsys);
+ sel = readl(&exynos_clock->clk_src_fsys);
sel = (sel >> ((dev_index * 4) + 8)) & 0x7;
if (sel == 0x3)
@@ -301,7 +296,7 @@ static unsigned long get_mmc_clk(int dev_index)
else
return 0;
- ratio = readl(&clk->clk_div_fsys1);
+ ratio = readl(&exynos_clock->clk_div_fsys1);
shift = dev_index * 10;
@@ -315,11 +310,10 @@ static unsigned long get_mmc_clk(int dev_index)
/* exynos5: set the mmc clock */
void set_mmc_clk(int dev_index, unsigned int div)
{
- struct exynos5420_clock *clk = samsung_get_base_clock();
void *addr;
unsigned int val, shift;
- addr = &clk->clk_div_fsys1;
+ addr = &exynos_clock->clk_div_fsys1;
shift = dev_index * 10;
val = readl(addr);
@@ -361,7 +355,6 @@ int clock_set_dwmci(enum periph_id peripheral)
void clock_ll_set_pre_ratio(enum periph_id periph_id, unsigned divisor)
{
- struct exynos5420_clock *clk = samsung_get_base_clock();
unsigned shift;
unsigned mask = 0xff;
u32 *reg;
@@ -376,23 +369,23 @@ void clock_ll_set_pre_ratio(enum periph_id periph_id, unsigned divisor)
*/
switch (periph_id) {
case PERIPH_ID_SPI0:
- reg = &clk->clk_div_peric4;
+ reg = &exynos_clock->clk_div_peric4;
shift = 8;
break;
case PERIPH_ID_SPI1:
- reg = &clk->clk_div_peric4;
+ reg = &exynos_clock->clk_div_peric4;
shift = 16;
break;
case PERIPH_ID_SPI2:
- reg = &clk->clk_div_peric4;
+ reg = &exynos_clock->clk_div_peric4;
shift = 24;
break;
case PERIPH_ID_SPI3:
- reg = &clk->clk_div_isp1;
+ reg = &exynos_clock->clk_div_isp1;
shift = 0;
break;
case PERIPH_ID_SPI4:
- reg = &clk->clk_div_isp1;
+ reg = &exynos_clock->clk_div_isp1;
shift = 8;
break;
default:
@@ -405,30 +398,29 @@ void clock_ll_set_pre_ratio(enum periph_id periph_id, unsigned divisor)
void clock_ll_set_ratio(enum periph_id periph_id, unsigned divisor)
{
- struct exynos5420_clock *clk = samsung_get_base_clock();
unsigned shift;
unsigned mask = 0xf;
u32 *reg;
switch (periph_id) {
case PERIPH_ID_SPI0:
- reg = &clk->clk_div_peric1;
+ reg = &exynos_clock->clk_div_peric1;
shift = 20;
break;
case PERIPH_ID_SPI1:
- reg = &clk->clk_div_peric1;
+ reg = &exynos_clock->clk_div_peric1;
shift = 24;
break;
case PERIPH_ID_SPI2:
- reg = &clk->clk_div_peric1;
+ reg = &exynos_clock->clk_div_peric1;
shift = 28;
break;
case PERIPH_ID_SPI3:
- reg = &clk->clk_div_isp1;
+ reg = &exynos_clock->clk_div_isp1;
shift = 16;
break;
case PERIPH_ID_SPI4:
- reg = &clk->clk_div_isp1;
+ reg = &exynos_clock->clk_div_isp1;
shift = 20;
break;
default:
@@ -529,7 +521,6 @@ int clock_set_rate(enum periph_id periph_id, unsigned int rate)
int clock_set_mshci(enum periph_id peripheral)
{
- struct exynos5420_clock *clk = samsung_get_base_clock();
u32 *addr;
unsigned int clock;
unsigned int tmp;
@@ -546,10 +537,10 @@ int clock_set_mshci(enum periph_id peripheral)
*/
switch (peripheral) {
case PERIPH_ID_SDMMC0:
- addr = &clk->clk_div_fsys1;
+ addr = &exynos_clock->clk_div_fsys1;
break;
case PERIPH_ID_SDMMC2:
- addr = &clk->clk_div_fsys2;
+ addr = &exynos_clock->clk_div_fsys2;
break;
default:
printk(BIOS_DEBUG, "invalid peripheral\n");
@@ -571,9 +562,8 @@ int clock_epll_set_rate(unsigned long rate)
unsigned int i;
unsigned int lockcnt;
struct mono_time current, end;
- struct exynos5420_clock *clk = samsung_get_base_clock();
- epll_con = readl(&clk->epll_con0);
+ epll_con = readl(&exynos_clock->epll_con0);
epll_con &= ~((EPLL_CON0_LOCK_DET_EN_MASK <<
EPLL_CON0_LOCK_DET_EN_SHIFT) |
EPLL_CON0_MDIV_MASK << EPLL_CON0_MDIV_SHIFT |
@@ -601,15 +591,15 @@ int clock_epll_set_rate(unsigned long rate)
*/
lockcnt = 3000 * epll_div[i].p_div;
- writel(lockcnt, &clk->epll_lock);
- writel(epll_con, &clk->epll_con0);
- writel(epll_con_k, &clk->epll_con1);
+ writel(lockcnt, &exynos_clock->epll_lock);
+ writel(epll_con, &exynos_clock->epll_con0);
+ writel(epll_con_k, &exynos_clock->epll_con1);
timer_monotonic_get(&current);
end = current;
mono_time_add_msecs(&end, TIMEOUT_EPLL_LOCK);
- while (!(readl(&clk->epll_con0) &
+ while (!(readl(&exynos_clock->epll_con0) &
(0x1 << EXYNOS5_EPLLCON0_LOCKED_SHIFT))) {
if (mono_time_after(&current, &end)) {
printk(BIOS_DEBUG, "%s: Timeout waiting for EPLL lock\n", __func__);
@@ -623,15 +613,12 @@ int clock_epll_set_rate(unsigned long rate)
void clock_select_i2s_clk_source(void)
{
- struct exynos5420_clock *clk = samsung_get_base_clock();
-
- clrsetbits_le32(&clk->clk_src_peric1, AUDIO1_SEL_MASK,
+ clrsetbits_le32(&exynos_clock->clk_src_peric1, AUDIO1_SEL_MASK,
(CLK_SRC_SCLK_EPLL));
}
int clock_set_i2s_clk_prescaler(unsigned int src_frq, unsigned int dst_frq)
{
- struct exynos5420_clock *clk = samsung_get_base_clock();
unsigned int div ;
if ((dst_frq == 0) || (src_frq == 0)) {
@@ -646,7 +633,7 @@ int clock_set_i2s_clk_prescaler(unsigned int src_frq, unsigned int dst_frq)
printk(BIOS_DEBUG, "src frq = %d des frq = %d ", src_frq, dst_frq);
return -1;
}
- clrsetbits_le32(&clk->clk_div_peric4, AUDIO_1_RATIO_MASK,
+ clrsetbits_le32(&exynos_clock->clk_div_peric4, AUDIO_1_RATIO_MASK,
(div & AUDIO_1_RATIO_MASK));
return 0;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-12 04:43:37 +0000