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-rw-r--r--arch/arm/cpu/armv7/keystone/Makefile1
-rw-r--r--arch/arm/cpu/armv7/keystone/clock-k2hk.c113
-rw-r--r--arch/arm/cpu/armv7/keystone/clock.c148
3 files changed, 138 insertions, 124 deletions
diff --git a/arch/arm/cpu/armv7/keystone/Makefile b/arch/arm/cpu/armv7/keystone/Makefile
index 64e42a6..74c5160 100644
--- a/arch/arm/cpu/armv7/keystone/Makefile
+++ b/arch/arm/cpu/armv7/keystone/Makefile
@@ -8,6 +8,7 @@
obj-y += init.o
obj-y += psc.o
obj-y += clock.o
+obj-$(CONFIG_SOC_K2HK) += clock-k2hk.o
obj-y += cmd_clock.o
obj-y += cmd_mon.o
obj-$(CONFIG_DRIVER_TI_KEYSTONE_NET) += keystone_nav.o
diff --git a/arch/arm/cpu/armv7/keystone/clock-k2hk.c b/arch/arm/cpu/armv7/keystone/clock-k2hk.c
new file mode 100644
index 0000000..96a9f72
--- /dev/null
+++ b/arch/arm/cpu/armv7/keystone/clock-k2hk.c
@@ -0,0 +1,113 @@
+/*
+ * Keystone2: get clk rate for K2HK
+ *
+ * (C) Copyright 2012-2014
+ * Texas Instruments Incorporated, <www.ti.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/clock_defs.h>
+
+const struct keystone_pll_regs keystone_pll_regs[] = {
+ [CORE_PLL] = {KS2_MAINPLLCTL0, KS2_MAINPLLCTL1},
+ [PASS_PLL] = {KS2_PASSPLLCTL0, KS2_PASSPLLCTL1},
+ [TETRIS_PLL] = {KS2_ARMPLLCTL0, KS2_ARMPLLCTL1},
+ [DDR3A_PLL] = {KS2_DDR3APLLCTL0, KS2_DDR3APLLCTL1},
+ [DDR3B_PLL] = {KS2_DDR3BPLLCTL0, KS2_DDR3BPLLCTL1},
+};
+
+/**
+ * pll_freq_get - get pll frequency
+ * Fout = Fref * NF(mult) / NR(prediv) / OD
+ * @pll: pll identifier
+ */
+static unsigned long pll_freq_get(int pll)
+{
+ unsigned long mult = 1, prediv = 1, output_div = 2;
+ unsigned long ret;
+ u32 tmp, reg;
+
+ if (pll == CORE_PLL) {
+ ret = external_clk[sys_clk];
+ if (pllctl_reg_read(pll, ctl) & PLLCTL_PLLEN) {
+ /* PLL mode */
+ tmp = __raw_readl(KS2_MAINPLLCTL0);
+ prediv = (tmp & PLL_DIV_MASK) + 1;
+ mult = (((tmp & PLLM_MULT_HI_SMASK) >> 6) |
+ (pllctl_reg_read(pll, mult) &
+ PLLM_MULT_LO_MASK)) + 1;
+ output_div = ((pllctl_reg_read(pll, secctl) >>
+ PLL_CLKOD_SHIFT) & PLL_CLKOD_MASK) + 1;
+
+ ret = ret / prediv / output_div * mult;
+ }
+ } else {
+ switch (pll) {
+ case PASS_PLL:
+ ret = external_clk[pa_clk];
+ reg = KS2_PASSPLLCTL0;
+ break;
+ case TETRIS_PLL:
+ ret = external_clk[tetris_clk];
+ reg = KS2_ARMPLLCTL0;
+ break;
+ case DDR3A_PLL:
+ ret = external_clk[ddr3a_clk];
+ reg = KS2_DDR3APLLCTL0;
+ break;
+ case DDR3B_PLL:
+ ret = external_clk[ddr3b_clk];
+ reg = KS2_DDR3BPLLCTL0;
+ break;
+ default:
+ return 0;
+ }
+
+ tmp = __raw_readl(reg);
+
+ if (!(tmp & PLLCTL_BYPASS)) {
+ /* Bypass disabled */
+ prediv = (tmp & PLL_DIV_MASK) + 1;
+ mult = ((tmp >> PLL_MULT_SHIFT) & PLL_MULT_MASK) + 1;
+ output_div = ((tmp >> PLL_CLKOD_SHIFT) &
+ PLL_CLKOD_MASK) + 1;
+ ret = ((ret / prediv) * mult) / output_div;
+ }
+ }
+
+ return ret;
+}
+
+unsigned long clk_get_rate(unsigned int clk)
+{
+ switch (clk) {
+ case core_pll_clk: return pll_freq_get(CORE_PLL);
+ case pass_pll_clk: return pll_freq_get(PASS_PLL);
+ case tetris_pll_clk: return pll_freq_get(TETRIS_PLL);
+ case ddr3a_pll_clk: return pll_freq_get(DDR3A_PLL);
+ case ddr3b_pll_clk: return pll_freq_get(DDR3B_PLL);
+ case sys_clk0_1_clk:
+ case sys_clk0_clk: return pll_freq_get(CORE_PLL) / pll0div_read(1);
+ case sys_clk1_clk: return pll_freq_get(CORE_PLL) / pll0div_read(2);
+ case sys_clk2_clk: return pll_freq_get(CORE_PLL) / pll0div_read(3);
+ case sys_clk3_clk: return pll_freq_get(CORE_PLL) / pll0div_read(4);
+ case sys_clk0_2_clk: return clk_get_rate(sys_clk0_clk) / 2;
+ case sys_clk0_3_clk: return clk_get_rate(sys_clk0_clk) / 3;
+ case sys_clk0_4_clk: return clk_get_rate(sys_clk0_clk) / 4;
+ case sys_clk0_6_clk: return clk_get_rate(sys_clk0_clk) / 6;
+ case sys_clk0_8_clk: return clk_get_rate(sys_clk0_clk) / 8;
+ case sys_clk0_12_clk: return clk_get_rate(sys_clk0_clk) / 12;
+ case sys_clk0_24_clk: return clk_get_rate(sys_clk0_clk) / 24;
+ case sys_clk1_3_clk: return clk_get_rate(sys_clk1_clk) / 3;
+ case sys_clk1_4_clk: return clk_get_rate(sys_clk1_clk) / 4;
+ case sys_clk1_6_clk: return clk_get_rate(sys_clk1_clk) / 6;
+ case sys_clk1_12_clk: return clk_get_rate(sys_clk1_clk) / 12;
+ default:
+ break;
+ }
+
+ return 0;
+}
diff --git a/arch/arm/cpu/armv7/keystone/clock.c b/arch/arm/cpu/armv7/keystone/clock.c
index f905fdc..42b664b 100644
--- a/arch/arm/cpu/armv7/keystone/clock.c
+++ b/arch/arm/cpu/armv7/keystone/clock.c
@@ -8,9 +8,6 @@
*/
#include <common.h>
-#include <asm-generic/errno.h>
-#include <asm/io.h>
-#include <asm/processor.h>
#include <asm/arch/clock.h>
#include <asm/arch/clock_defs.h>
@@ -24,106 +21,6 @@ static void wait_for_completion(const struct pll_init_data *data)
}
}
-struct pll_regs {
- u32 reg0, reg1;
-};
-
-static const struct pll_regs pll_regs[] = {
- [CORE_PLL] = { KS2_MAINPLLCTL0, KS2_MAINPLLCTL1},
- [PASS_PLL] = { KS2_PASSPLLCTL0, KS2_PASSPLLCTL1},
- [TETRIS_PLL] = { KS2_ARMPLLCTL0, KS2_ARMPLLCTL1},
- [DDR3A_PLL] = { KS2_DDR3APLLCTL0, KS2_DDR3APLLCTL1},
- [DDR3B_PLL] = { KS2_DDR3BPLLCTL0, KS2_DDR3BPLLCTL1},
-};
-
-/* Fout = Fref * NF(mult) / NR(prediv) / OD */
-static unsigned long pll_freq_get(int pll)
-{
- unsigned long mult = 1, prediv = 1, output_div = 2;
- unsigned long ret;
- u32 tmp, reg;
-
- if (pll == CORE_PLL) {
- ret = external_clk[sys_clk];
- if (pllctl_reg_read(pll, ctl) & PLLCTL_PLLEN) {
- /* PLL mode */
- tmp = __raw_readl(KS2_MAINPLLCTL0);
- prediv = (tmp & PLL_DIV_MASK) + 1;
- mult = (((tmp & PLLM_MULT_HI_SMASK) >> 6) |
- (pllctl_reg_read(pll, mult) &
- PLLM_MULT_LO_MASK)) + 1;
- output_div = ((pllctl_reg_read(pll, secctl) >>
- PLL_CLKOD_SHIFT) & PLL_CLKOD_MASK) + 1;
-
- ret = ret / prediv / output_div * mult;
- }
- } else {
- switch (pll) {
- case PASS_PLL:
- ret = external_clk[pa_clk];
- reg = KS2_PASSPLLCTL0;
- break;
- case TETRIS_PLL:
- ret = external_clk[tetris_clk];
- reg = KS2_ARMPLLCTL0;
- break;
- case DDR3A_PLL:
- ret = external_clk[ddr3a_clk];
- reg = KS2_DDR3APLLCTL0;
- break;
- case DDR3B_PLL:
- ret = external_clk[ddr3b_clk];
- reg = KS2_DDR3BPLLCTL0;
- break;
- default:
- return 0;
- }
-
- tmp = __raw_readl(reg);
-
- if (!(tmp & PLLCTL_BYPASS)) {
- /* Bypass disabled */
- prediv = (tmp & PLL_DIV_MASK) + 1;
- mult = ((tmp >> PLL_MULT_SHIFT) & PLL_MULT_MASK) + 1;
- output_div = ((tmp >> PLL_CLKOD_SHIFT) &
- PLL_CLKOD_MASK) + 1;
- ret = ((ret / prediv) * mult) / output_div;
- }
- }
-
- return ret;
-}
-
-unsigned long clk_get_rate(unsigned int clk)
-{
- switch (clk) {
- case core_pll_clk: return pll_freq_get(CORE_PLL);
- case pass_pll_clk: return pll_freq_get(PASS_PLL);
- case tetris_pll_clk: return pll_freq_get(TETRIS_PLL);
- case ddr3a_pll_clk: return pll_freq_get(DDR3A_PLL);
- case ddr3b_pll_clk: return pll_freq_get(DDR3B_PLL);
- case sys_clk0_1_clk:
- case sys_clk0_clk: return pll_freq_get(CORE_PLL) / pll0div_read(1);
- case sys_clk1_clk: return pll_freq_get(CORE_PLL) / pll0div_read(2);
- case sys_clk2_clk: return pll_freq_get(CORE_PLL) / pll0div_read(3);
- case sys_clk3_clk: return pll_freq_get(CORE_PLL) / pll0div_read(4);
- case sys_clk0_2_clk: return clk_get_rate(sys_clk0_clk) / 2;
- case sys_clk0_3_clk: return clk_get_rate(sys_clk0_clk) / 3;
- case sys_clk0_4_clk: return clk_get_rate(sys_clk0_clk) / 4;
- case sys_clk0_6_clk: return clk_get_rate(sys_clk0_clk) / 6;
- case sys_clk0_8_clk: return clk_get_rate(sys_clk0_clk) / 8;
- case sys_clk0_12_clk: return clk_get_rate(sys_clk0_clk) / 12;
- case sys_clk0_24_clk: return clk_get_rate(sys_clk0_clk) / 24;
- case sys_clk1_3_clk: return clk_get_rate(sys_clk1_clk) / 3;
- case sys_clk1_4_clk: return clk_get_rate(sys_clk1_clk) / 4;
- case sys_clk1_6_clk: return clk_get_rate(sys_clk1_clk) / 6;
- case sys_clk1_12_clk: return clk_get_rate(sys_clk1_clk) / 12;
- default:
- break;
- }
- return 0;
-}
-
void init_pll(const struct pll_init_data *data)
{
u32 tmp, tmp_ctl, pllm, plld, pllod, bwadj;
@@ -139,7 +36,7 @@ void init_pll(const struct pll_init_data *data)
tmp = pllctl_reg_read(data->pll, secctl);
if (tmp & (PLLCTL_BYPASS)) {
- setbits_le32(pll_regs[data->pll].reg1,
+ setbits_le32(keystone_pll_regs[data->pll].reg1,
BIT(MAIN_ENSAT_OFFSET));
pllctl_reg_clrbits(data->pll, ctl, PLLCTL_PLLEN |
@@ -159,21 +56,24 @@ void init_pll(const struct pll_init_data *data)
pllctl_reg_write(data->pll, mult, pllm & PLLM_MULT_LO_MASK);
- clrsetbits_le32(pll_regs[data->pll].reg0, PLLM_MULT_HI_SMASK,
- (pllm << 6));
+ clrsetbits_le32(keystone_pll_regs[data->pll].reg0,
+ PLLM_MULT_HI_SMASK, (pllm << 6));
/* Set the BWADJ (12 bit field) */
tmp_ctl = pllm >> 1; /* Divide the pllm by 2 */
- clrsetbits_le32(pll_regs[data->pll].reg0, PLL_BWADJ_LO_SMASK,
+ clrsetbits_le32(keystone_pll_regs[data->pll].reg0,
+ PLL_BWADJ_LO_SMASK,
(tmp_ctl << PLL_BWADJ_LO_SHIFT));
- clrsetbits_le32(pll_regs[data->pll].reg1, PLL_BWADJ_HI_MASK,
+ clrsetbits_le32(keystone_pll_regs[data->pll].reg1,
+ PLL_BWADJ_HI_MASK,
(tmp_ctl >> 8));
/*
* Set the pll divider (6 bit field) *
* PLLD[5:0] is located in MAINPLLCTL0
*/
- clrsetbits_le32(pll_regs[data->pll].reg0, PLL_DIV_MASK, plld);
+ clrsetbits_le32(keystone_pll_regs[data->pll].reg0,
+ PLL_DIV_MASK, plld);
/* Set the OUTPUT DIVIDE (4 bit field) in SECCTL */
pllctl_reg_rmw(data->pll, secctl, PLL_CLKOD_SMASK,
@@ -209,14 +109,14 @@ void init_pll(const struct pll_init_data *data)
} else if (data->pll == TETRIS_PLL) {
bwadj = pllm >> 1;
/* 1.5 Set PLLCTL0[BYPASS] =1 (enable bypass), */
- setbits_le32(pll_regs[data->pll].reg0, PLLCTL_BYPASS);
+ setbits_le32(keystone_pll_regs[data->pll].reg0, PLLCTL_BYPASS);
/*
* Set CHIPMISCCTL1[13] = 0 (enable glitchfree bypass)
* only applicable for Kepler
*/
clrbits_le32(KS2_MISC_CTRL, KS2_ARM_PLL_EN);
/* 2 In PLLCTL1, write PLLRST = 1 (PLL is reset) */
- setbits_le32(pll_regs[data->pll].reg1 ,
+ setbits_le32(keystone_pll_regs[data->pll].reg1 ,
PLL_PLLRST | PLLCTL_ENSAT);
/*
@@ -229,13 +129,13 @@ void init_pll(const struct pll_init_data *data)
(pllm << 6) |
(plld & PLL_DIV_MASK) |
(pllod << PLL_CLKOD_SHIFT) | PLLCTL_BYPASS;
- __raw_writel(tmp, pll_regs[data->pll].reg0);
+ __raw_writel(tmp, keystone_pll_regs[data->pll].reg0);
/* Set BWADJ[11:8] bits */
- tmp = __raw_readl(pll_regs[data->pll].reg1);
+ tmp = __raw_readl(keystone_pll_regs[data->pll].reg1);
tmp &= ~(PLL_BWADJ_HI_MASK);
tmp |= ((bwadj>>8) & PLL_BWADJ_HI_MASK);
- __raw_writel(tmp, pll_regs[data->pll].reg1);
+ __raw_writel(tmp, keystone_pll_regs[data->pll].reg1);
/*
* 5 Wait for at least 5 us based on the reference
* clock (PLL reset time)
@@ -243,26 +143,26 @@ void init_pll(const struct pll_init_data *data)
sdelay(21000); /* Wait for a minimum of 7 us*/
/* 6 In PLLCTL1, write PLLRST = 0 (PLL reset is released) */
- clrbits_le32(pll_regs[data->pll].reg1, PLL_PLLRST);
+ clrbits_le32(keystone_pll_regs[data->pll].reg1, PLL_PLLRST);
/*
* 7 Wait for at least 500 * REFCLK cycles * (PLLD + 1)
* (PLL lock time)
*/
sdelay(105000);
/* 8 disable bypass */
- clrbits_le32(pll_regs[data->pll].reg0, PLLCTL_BYPASS);
+ clrbits_le32(keystone_pll_regs[data->pll].reg0, PLLCTL_BYPASS);
/*
* 9 Set CHIPMISCCTL1[13] = 1 (disable glitchfree bypass)
* only applicable for Kepler
*/
setbits_le32(KS2_MISC_CTRL, KS2_ARM_PLL_EN);
} else {
- setbits_le32(pll_regs[data->pll].reg1, PLLCTL_ENSAT);
+ setbits_le32(keystone_pll_regs[data->pll].reg1, PLLCTL_ENSAT);
/*
* process keeps state of Bypass bit while programming
* all other DDR PLL settings
*/
- tmp = __raw_readl(pll_regs[data->pll].reg0);
+ tmp = __raw_readl(keystone_pll_regs[data->pll].reg0);
tmp &= PLLCTL_BYPASS; /* clear everything except Bypass */
/*
@@ -274,10 +174,10 @@ void init_pll(const struct pll_init_data *data)
(pllm << PLL_MULT_SHIFT) |
(plld & PLL_DIV_MASK) |
(pllod << PLL_CLKOD_SHIFT);
- __raw_writel(tmp, pll_regs[data->pll].reg0);
+ __raw_writel(tmp, keystone_pll_regs[data->pll].reg0);
/* Set BWADJ[11:8] bits */
- tmp = __raw_readl(pll_regs[data->pll].reg1);
+ tmp = __raw_readl(keystone_pll_regs[data->pll].reg1);
tmp &= ~(PLL_BWADJ_HI_MASK);
tmp |= ((bwadj >> 8) & PLL_BWADJ_HI_MASK);
@@ -285,20 +185,20 @@ void init_pll(const struct pll_init_data *data)
if (data->pll == PASS_PLL)
tmp |= PLLCTL_PAPLL;
- __raw_writel(tmp, pll_regs[data->pll].reg1);
+ __raw_writel(tmp, keystone_pll_regs[data->pll].reg1);
/* Reset bit: bit 14 for both DDR3 & PASS PLL */
tmp = PLL_PLLRST;
/* Set RESET bit = 1 */
- setbits_le32(pll_regs[data->pll].reg1, tmp);
+ setbits_le32(keystone_pll_regs[data->pll].reg1, tmp);
/* Wait for a minimum of 7 us*/
sdelay(21000);
/* Clear RESET bit */
- clrbits_le32(pll_regs[data->pll].reg1, tmp);
+ clrbits_le32(keystone_pll_regs[data->pll].reg1, tmp);
sdelay(105000);
/* clear BYPASS (Enable PLL Mode) */
- clrbits_le32(pll_regs[data->pll].reg0, PLLCTL_BYPASS);
+ clrbits_le32(keystone_pll_regs[data->pll].reg0, PLLCTL_BYPASS);
sdelay(21000); /* Wait for a minimum of 7 us*/
}
generated by cgit v1.1 at 2024-12-23 19:58:53 +0000