From: Hao Zhang <hzh...@ti.com>
This patch adds clock definitions and commands to support Keystone II
K2L SOC.
Acked-by: Vitaly Andrianov <vita...@ti.com>
Signed-off-by: Hao Zhang <hzh...@ti.com>
Signed-off-by: Ivan Khoronzhuk <ivan.khoronz...@ti.com>
---
arch/arm/cpu/armv7/keystone/Makefile | 1 +
arch/arm/cpu/armv7/keystone/clock-k2l.c | 138 +++++++++++++++++++++++++
arch/arm/cpu/armv7/keystone/cmd_clock.c | 10 ++
arch/arm/include/asm/arch-keystone/clock-k2l.h | 88 ++++++++++++++++
arch/arm/include/asm/arch-keystone/clock.h | 4 +
5 files changed, 241 insertions(+)
create mode 100644 arch/arm/cpu/armv7/keystone/clock-k2l.c
create mode 100644 arch/arm/include/asm/arch-keystone/clock-k2l.h
diff --git a/arch/arm/cpu/armv7/keystone/Makefile
b/arch/arm/cpu/armv7/keystone/Makefile
index 3d8fb70..4750371 100644
--- a/arch/arm/cpu/armv7/keystone/Makefile
+++ b/arch/arm/cpu/armv7/keystone/Makefile
@@ -10,6 +10,7 @@ obj-y += psc.o
obj-y += clock.o
obj-$(CONFIG_SOC_K2HK) += clock-k2hk.o
obj-$(CONFIG_SOC_K2E) += clock-k2e.o
+obj-$(CONFIG_SOC_K2L) += clock-k2l.o
obj-y += cmd_clock.o
obj-y += cmd_mon.o
obj-y += msmc.o
diff --git a/arch/arm/cpu/armv7/keystone/clock-k2l.c
b/arch/arm/cpu/armv7/keystone/clock-k2l.c
new file mode 100644
index 0000000..1c5e4d5
--- /dev/null
+++ b/arch/arm/cpu/armv7/keystone/clock-k2l.c
@@ -0,0 +1,138 @@
+/*
+ * Keystone2: get clk rate for K2L
+ *
+ * (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},
+ [DDR3_PLL] = {KS2_DDR3APLLCTL0, KS2_DDR3APLLCTL1},
+};
+
+int dev_speeds[] = {
+ SPD800,
+ SPD1000,
+ SPD1200,
+ SPD800,
+ SPD800,
+ SPD800,
+ SPD800,
+ SPD800,
+ SPD1200,
+ SPD1000,
+ SPD800,
+ SPD800,
+ SPD800,
+};
+
+int arm_speeds[] = {
+ SPD800,
+ SPD1000,
+ SPD1200,
+ SPD1350,
+ SPD1400,
+ SPD800,
+ SPD1400,
+ SPD1350,
+ SPD1200,
+ SPD1000,
+ SPD800,
+ SPD800,
+ SPD800,
+};
+
+/**
+ * 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 DDR3_PLL:
+ ret = external_clk[ddr3_clk];
+ reg = KS2_DDR3APLLCTL0;
+ 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 ddr3_pll_clk: return pll_freq_get(DDR3_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/cmd_clock.c
b/arch/arm/cpu/armv7/keystone/cmd_clock.c
index d97c95b..9204887 100644
--- a/arch/arm/cpu/armv7/keystone/cmd_clock.c
+++ b/arch/arm/cpu/armv7/keystone/cmd_clock.c
@@ -72,6 +72,13 @@ U_BOOT_CMD(
"<pa|ddr3> <mult> <div> <OD>\n"
);
#endif
+#ifdef CONFIG_SOC_K2L
+U_BOOT_CMD(
+ pllset, 5, 0, do_pll_cmd,
+ "set pll multiplier and pre divider",
+ "<pa|arm|ddr3> <mult> <div> <OD>\n"
+);
+#endif
int do_getclk_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
@@ -101,6 +108,9 @@ U_BOOT_CMD(
#ifdef CONFIG_SOC_K2E
"See the 'enum clk_e' in the clock-k2e.h for clk indexes\n"
#endif
+#ifdef CONFIG_SOC_K2L
+ "See the 'enum clk_e' in the clock-k2l.h for clk indexes\n"
+#endif
);
int do_psc_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
diff --git a/arch/arm/include/asm/arch-keystone/clock-k2l.h
b/arch/arm/include/asm/arch-keystone/clock-k2l.h
new file mode 100644
index 0000000..8cacee0
--- /dev/null
+++ b/arch/arm/include/asm/arch-keystone/clock-k2l.h
@@ -0,0 +1,88 @@
+/*
+ * K2L: Clock management APIs
+ *
+ * (C) Copyright 2012-2014
+ * Texas Instruments Incorporated, <www.ti.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef __ASM_ARCH_CLOCK_K2L_H
+#define __ASM_ARCH_CLOCK_K2L_H
+
+enum ext_clk_e {
+ sys_clk,
+ alt_core_clk,
+ pa_clk,
+ tetris_clk,
+ ddr3_clk,
+ pcie_clk,
+ sgmii_clk,
+ usb_clk,
+ rp1_clk,
+ ext_clk_count /* number of external clocks */
+};
+
+extern unsigned int external_clk[ext_clk_count];
+
+enum clk_e {
+ core_pll_clk,
+ pass_pll_clk,
+ tetris_pll_clk,
+ ddr3_pll_clk,
+ sys_clk0_clk,
+ sys_clk0_1_clk,
+ sys_clk0_2_clk,
+ sys_clk0_3_clk,
+ sys_clk0_4_clk,
+ sys_clk0_6_clk,
+ sys_clk0_8_clk,
+ sys_clk0_12_clk,
+ sys_clk0_24_clk,
+ sys_clk1_clk,
+ sys_clk1_3_clk,
+ sys_clk1_4_clk,
+ sys_clk1_6_clk,
+ sys_clk1_12_clk,
+ sys_clk2_clk,
+ sys_clk3_clk
+};
+
+#define KS2_CLK1_6 sys_clk0_6_clk
+
+/* PLL identifiers */
+enum pll_type_e {
+ CORE_PLL,
+ PASS_PLL,
+ TETRIS_PLL,
+ DDR3_PLL,
+};
+
+enum {
+ SPD800,
+ SPD1000,
+ SPD1200,
+ SPD1350,
+ SPD1400,
+ SPD_RSV
+};
+
+#define CORE_PLL_799 {CORE_PLL, 13, 1, 2}
+#define CORE_PLL_983 {CORE_PLL, 16, 1, 2}
+#define CORE_PLL_1167 {CORE_PLL, 19, 1, 2}
+#define CORE_PLL_1228 {CORE_PLL, 20, 1, 2}
+#define PASS_PLL_1228 {PASS_PLL, 20, 1, 2}
+#define PASS_PLL_983 {PASS_PLL, 16, 1, 2}
+#define PASS_PLL_1050 {PASS_PLL, 205, 12, 2}
+#define TETRIS_PLL_491 {TETRIS_PLL, 8, 1, 2}
+#define TETRIS_PLL_737 {TETRIS_PLL, 12, 1, 2}
+#define TETRIS_PLL_799 {TETRIS_PLL, 13, 1, 2}
+#define TETRIS_PLL_983 {TETRIS_PLL, 16, 1, 2}
+#define TETRIS_PLL_1167 {TETRIS_PLL, 19, 1, 2}
+#define TETRIS_PLL_1228 {TETRIS_PLL, 20, 1, 2}
+#define DDR3_PLL_200 {DDR3_PLL, 4, 1, 2}
+#define DDR3_PLL_400 {DDR3_PLL, 16, 1, 4}
+#define DDR3_PLL_800 {DDR3_PLL, 16, 1, 2}
+#define DDR3_PLL_333 {DDR3_PLL, 20, 1, 6}
+
+#endif
diff --git a/arch/arm/include/asm/arch-keystone/clock.h
b/arch/arm/include/asm/arch-keystone/clock.h
index dae000e..bc31267 100644
--- a/arch/arm/include/asm/arch-keystone/clock.h
+++ b/arch/arm/include/asm/arch-keystone/clock.h
@@ -20,6 +20,10 @@
#include <asm/arch/clock-k2e.h>
#endif
+#ifdef CONFIG_SOC_K2L
+#include <asm/arch/clock-k2l.h>
+#endif
+
#define MAIN_PLL CORE_PLL
#include <asm/types.h>
--
1.8.3.2
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