omap5: clocks: Add clocks support for omap5 platform.

Adding the correct configurations required for
dplls, clocks, for omap5 Soc.

Also changes are done to retain some part of the code common
for OMAP4/5 and move only the remaining to the Soc specific
directories.

Signed-off-by: sricharan <r.sricharan@ti.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>

1 files changed, 412 insertions, 0 deletions

diff --git a/arch/arm/cpu/armv7/omap5/clocks.c b/arch/arm/cpu/armv7/omap5/clocks.c
new file mode 100644
index 0000000000..28d3bcd8ee
--- /dev/null
+++ b/arch/arm/cpu/armv7/omap5/clocks.c
@@ -0,0 +1,412 @@
+/*
+ *
+ * Clock initialization for OMAP5
+ *
+ * (C) Copyright 2010
+ * Texas Instruments, <www.ti.com>
+ *
+ * Aneesh V <aneesh@ti.com>
+ * Sricharan R <r.sricharan@ti.com>
+ *
+ * Based on previous work by:
+ *	Santosh Shilimkar <santosh.shilimkar@ti.com>
+ *	Rajendra Nayak <rnayak@ti.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+#include <common.h>
+#include <asm/omap_common.h>
+#include <asm/arch/clocks.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/utils.h>
+#include <asm/omap_gpio.h>
+
+#ifndef CONFIG_SPL_BUILD
+/*
+ * printing to console doesn't work unless
+ * this code is executed from SPL
+ */
+#define printf(fmt, args...)
+#define puts(s)
+#endif
+
+struct omap5_prcm_regs *const prcm = (struct omap5_prcm_regs *)0x4A004100;
+
+const u32 sys_clk_array[8] = {
+	12000000,	       /* 12 MHz */
+	0,		       /* NA */
+	16800000,	       /* 16.8 MHz */
+	19200000,	       /* 19.2 MHz */
+	26000000,	       /* 26 MHz */
+	0,		       /* NA */
+	38400000,	       /* 38.4 MHz */
+};
+
+static const struct dpll_params mpu_dpll_params_1_5ghz[NUM_SYS_CLKS] = {
+	{125, 0, 1, -1, -1, -1, -1, -1, -1, -1},	/* 12 MHz   */
+	{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1},	/* 13 MHz   */
+	{625, 6, 1, -1, -1, -1, -1, -1, -1, -1},	/* 16.8 MHz */
+	{625, 7, 1, -1, -1, -1, -1, -1, -1, -1},	/* 19.2 MHz */
+	{750, 12, 1, -1, -1, -1, -1, -1, -1, -1},	/* 26 MHz   */
+	{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1},	/* 27 MHz   */
+	{625, 15, 1, -1, -1, -1, -1, -1, -1, -1}	/* 38.4 MHz */
+};
+
+static const struct dpll_params mpu_dpll_params_2ghz[NUM_SYS_CLKS] = {
+	{500, 2, 1, -1, -1, -1, -1, -1, -1, -1},	/* 12 MHz   */
+	{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1},	/* 13 MHz   */
+	{2024, 16, 1, -1, -1, -1, -1, -1, -1, -1},	/* 16.8 MHz */
+	{625, 5, 1, -1, -1, -1, -1, -1, -1, -1},	/* 19.2 MHz */
+	{1000, 12, 1, -1, -1, -1, -1, -1, -1, -1},	/* 26 MHz   */
+	{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1},	/* 27 MHz   */
+	{625, 11, 1, -1, -1, -1, -1, -1, -1, -1}	/* 38.4 MHz */
+};
+
+static const struct dpll_params mpu_dpll_params_1100mhz[NUM_SYS_CLKS] = {
+	{275, 2, 1, -1, -1, -1, -1, -1, -1, -1},	/* 12 MHz   */
+	{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1},	/* 13 MHz   */
+	{1375, 20, 1, -1, -1, -1, -1, -1, -1, -1},	/* 16.8 MHz */
+	{1375, 23, 1, -1, -1, -1, -1, -1, -1, -1},	/* 19.2 MHz */
+	{550, 12, 1, -1, -1, -1, -1, -1, -1, -1},	/* 26 MHz   */
+	{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1},	/* 27 MHz   */
+	{1375, 47, 1, -1, -1, -1, -1, -1, -1, -1}	/* 38.4 MHz */
+};
+
+static const struct dpll_params mpu_dpll_params_550mhz[NUM_SYS_CLKS] = {
+	{275, 2, 2, -1, -1, -1, -1, -1, -1, -1},	/* 12 MHz   */
+	{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1},	/* 13 MHz   */
+	{1375, 20, 2, -1, -1, -1, -1, -1, -1, -1},	/* 16.8 MHz */
+	{1375, 23, 2, -1, -1, -1, -1, -1, -1, -1},	/* 19.2 MHz */
+	{550, 12, 2, -1, -1, -1, -1, -1, -1, -1},	/* 26 MHz   */
+	{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1},	/* 27 MHz   */
+	{1375, 47, 2, -1, -1, -1, -1, -1, -1, -1}	/* 38.4 MHz */
+};
+
+static const struct dpll_params
+			core_dpll_params_2128mhz_ddr532[NUM_SYS_CLKS] = {
+	{266, 2, 1, 5, 8, 4, 62, 5, 5, 7},		/* 12 MHz   */
+	{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1},	/* 13 MHz   */
+	{570, 8, 1, 5, 8, 4, 62, 5, 5, 7},		/* 16.8 MHz */
+	{665, 11, 1, 5, 8, 4, 62, 5, 5, 7},		/* 19.2 MHz */
+	{532, 12, 1, 5, 8, 4, 62, 5, 5, 7},		/* 26 MHz   */
+	{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1},	/* 27 MHz   */
+	{665, 23, 1, 5, 8, 4, 62, 5, 5, 7}		/* 38.4 MHz */
+};
+
+static const struct dpll_params
+			core_dpll_params_2128mhz_ddr266[NUM_SYS_CLKS] = {
+	{266, 2, 2, 5, 8, 4, 62, 5, 5, 7},		/* 12 MHz   */
+	{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1},	/* 13 MHz   */
+	{570, 8, 2, 5, 8, 4, 62, 5, 5, 7},		/* 16.8 MHz */
+	{665, 11, 2, 5, 8, 4, 62, 5, 5, 7},		/* 19.2 MHz */
+	{532, 12, 2, 5, 8, 4, 62, 5, 5, 7},		/* 26 MHz   */
+	{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1},	/* 27 MHz   */
+	{665, 23, 2, 5, 8, 4, 62, 5, 5, 7}		/* 38.4 MHz */
+};
+
+static const struct dpll_params per_dpll_params_768mhz[NUM_SYS_CLKS] = {
+	{32, 0, 4, 3, 6, 4, -1, 2, -1, -1},		/* 12 MHz   */
+	{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1},	/* 13 MHz   */
+	{160, 6, 4, 3, 6, 4, -1, 2, -1, -1},		/* 16.8 MHz */
+	{20, 0, 4, 3, 6, 4, -1, 2, -1, -1},		/* 19.2 MHz */
+	{192, 12, 4, 3, 6, 4, -1, 2, -1, -1},		/* 26 MHz   */
+	{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1},	/* 27 MHz   */
+	{10, 0, 4, 3, 6, 4, -1, 2, -1, -1}		/* 38.4 MHz */
+};
+
+static const struct dpll_params iva_dpll_params_2330mhz[NUM_SYS_CLKS] = {
+	{931, 11, -1, -1, 4, 7, -1, -1},	/* 12 MHz   */
+	{931, 12, -1, -1, 4, 7, -1, -1},	/* 13 MHz   */
+	{665, 11, -1, -1, 4, 7, -1, -1},	/* 16.8 MHz */
+	{727, 14, -1, -1, 4, 7, -1, -1},	/* 19.2 MHz */
+	{931, 25, -1, -1, 4, 7, -1, -1},	/* 26 MHz   */
+	{931, 26, -1, -1, 4, 7, -1, -1},	/* 27 MHz   */
+	{412, 16, -1, -1, 4, 7, -1, -1}		/* 38.4 MHz */
+};
+
+/* ABE M & N values with sys_clk as source */
+static const struct dpll_params
+		abe_dpll_params_sysclk_196608khz[NUM_SYS_CLKS] = {
+	{49, 5, 1, 1, -1, -1, -1, -1},	/* 12 MHz   */
+	{68, 8, 1, 1, -1, -1, -1, -1},	/* 13 MHz   */
+	{35, 5, 1, 1, -1, -1, -1, -1},	/* 16.8 MHz */
+	{46, 8, 1, 1, -1, -1, -1, -1},	/* 19.2 MHz */
+	{34, 8, 1, 1, -1, -1, -1, -1},	/* 26 MHz   */
+	{29, 7, 1, 1, -1, -1, -1, -1},	/* 27 MHz   */
+	{64, 24, 1, 1, -1, -1, -1, -1}	/* 38.4 MHz */
+};
+
+/* ABE M & N values with 32K clock as source */
+static const struct dpll_params abe_dpll_params_32k_196608khz = {
+	750, 0, 1, 1, -1, -1, -1, -1
+};
+
+static const struct dpll_params usb_dpll_params_1920mhz[NUM_SYS_CLKS] = {
+	{80, 0, 2, -1, -1, -1, -1, -1},		/* 12 MHz   */
+	{960, 12, 2, -1, -1, -1, -1, -1},	/* 13 MHz   */
+	{400, 6, 2, -1, -1, -1, -1, -1},	/* 16.8 MHz */
+	{50, 0, 2, -1, -1, -1, -1, -1},		/* 19.2 MHz */
+	{480, 12, 2, -1, -1, -1, -1, -1},	/* 26 MHz   */
+	{320, 8, 2, -1, -1, -1, -1, -1},	/* 27 MHz   */
+	{25, 0, 2, -1, -1, -1, -1, -1}		/* 38.4 MHz */
+};
+
+void setup_post_dividers(u32 *const base, const struct dpll_params *params)
+{
+	struct dpll_regs *const dpll_regs = (struct dpll_regs *)base;
+
+	/* Setup post-dividers */
+	if (params->m2 >= 0)
+		writel(params->m2, &dpll_regs->cm_div_m2_dpll);
+	if (params->m3 >= 0)
+		writel(params->m3, &dpll_regs->cm_div_m3_dpll);
+	if (params->h11 >= 0)
+		writel(params->h11, &dpll_regs->cm_div_h11_dpll);
+	if (params->h12 >= 0)
+		writel(params->h12, &dpll_regs->cm_div_h12_dpll);
+	if (params->h13 >= 0)
+		writel(params->h13, &dpll_regs->cm_div_h13_dpll);
+	if (params->h14 >= 0)
+		writel(params->h14, &dpll_regs->cm_div_h14_dpll);
+	if (params->h22 >= 0)
+		writel(params->h22, &dpll_regs->cm_div_h22_dpll);
+	if (params->h23 >= 0)
+		writel(params->h23, &dpll_regs->cm_div_h23_dpll);
+}
+
+const struct dpll_params *get_mpu_dpll_params(void)
+{
+	u32 sysclk_ind = get_sys_clk_index();
+	return &mpu_dpll_params_1100mhz[sysclk_ind];
+}
+
+const struct dpll_params *get_core_dpll_params(void)
+{
+	u32 sysclk_ind = get_sys_clk_index();
+
+	/* Configuring the DDR to be at 532mhz */
+	return &core_dpll_params_2128mhz_ddr266[sysclk_ind];
+
+}
+
+const struct dpll_params *get_per_dpll_params(void)
+{
+	u32 sysclk_ind = get_sys_clk_index();
+	return &per_dpll_params_768mhz[sysclk_ind];
+}
+
+const struct dpll_params *get_iva_dpll_params(void)
+{
+	u32 sysclk_ind = get_sys_clk_index();
+	return &iva_dpll_params_2330mhz[sysclk_ind];
+}
+
+const struct dpll_params *get_usb_dpll_params(void)
+{
+	u32 sysclk_ind = get_sys_clk_index();
+	return &usb_dpll_params_1920mhz[sysclk_ind];
+}
+
+const struct dpll_params *get_abe_dpll_params(void)
+{
+#ifdef CONFIG_SYS_OMAP_ABE_SYSCK
+	u32 sysclk_ind = get_sys_clk_index();
+	return &abe_dpll_params_sysclk_196608khz[sysclk_ind];
+#else
+	return &abe_dpll_params_32k_196608khz;
+#endif
+}
+
+/*
+ * Setup the voltages for vdd_mpu, vdd_core, and vdd_iva
+ * We set the maximum voltages allowed here because Smart-Reflex is not
+ * enabled in bootloader. Voltage initialization in the kernel will set
+ * these to the nominal values after enabling Smart-Reflex
+ */
+void scale_vcores(void)
+{
+	u32 volt;
+
+	setup_sri2c();
+
+	/* Enable 1.22V from TPS for vdd_mpu */
+	volt = 1220;
+	do_scale_tps62361(TPS62361_REG_ADDR_SET1, volt);
+
+	/* VCORE 1 - for vdd_core */
+	volt = 1000;
+	do_scale_vcore(SMPS_REG_ADDR_VCORE1, volt);
+
+	/* VCORE 2 - for vdd_MM */
+	volt = 1125;
+	do_scale_vcore(SMPS_REG_ADDR_VCORE2, volt);
+}
+
+/*
+ * Enable essential clock domains, modules and
+ * do some additional special settings needed
+ */
+void enable_basic_clocks(void)
+{
+	u32 *const clk_domains_essential[] = {
+		&prcm->cm_l4per_clkstctrl,
+		&prcm->cm_l3init_clkstctrl,
+		&prcm->cm_memif_clkstctrl,
+		&prcm->cm_l4cfg_clkstctrl,
+		0
+	};
+
+	u32 *const clk_modules_hw_auto_essential[] = {
+		&prcm->cm_wkup_gpio1_clkctrl,
+		&prcm->cm_l4per_gpio2_clkctrl,
+		&prcm->cm_l4per_gpio3_clkctrl,
+		&prcm->cm_l4per_gpio4_clkctrl,
+		&prcm->cm_l4per_gpio5_clkctrl,
+		&prcm->cm_l4per_gpio6_clkctrl,
+		&prcm->cm_memif_emif_1_clkctrl,
+		&prcm->cm_memif_emif_2_clkctrl,
+		&prcm->cm_l4cfg_l4_cfg_clkctrl,
+		0
+	};
+
+	u32 *const clk_modules_explicit_en_essential[] = {
+		&prcm->cm_l4per_gptimer2_clkctrl,
+		&prcm->cm_l3init_hsmmc1_clkctrl,
+		&prcm->cm_l3init_hsmmc2_clkctrl,
+		&prcm->cm_l4per_mcspi1_clkctrl,
+		&prcm->cm_wkup_gptimer1_clkctrl,
+		&prcm->cm_l4per_i2c1_clkctrl,
+		&prcm->cm_l4per_i2c2_clkctrl,
+		&prcm->cm_l4per_i2c3_clkctrl,
+		&prcm->cm_l4per_i2c4_clkctrl,
+		&prcm->cm_wkup_wdtimer2_clkctrl,
+		&prcm->cm_l4per_uart3_clkctrl,
+		0
+	};
+
+	/* Enable optional additional functional clock for GPIO4 */
+	setbits_le32(&prcm->cm_l4per_gpio4_clkctrl,
+			GPIO4_CLKCTRL_OPTFCLKEN_MASK);
+
+	/* Enable 96 MHz clock for MMC1 & MMC2 */
+	setbits_le32(&prcm->cm_l3init_hsmmc1_clkctrl,
+			HSMMC_CLKCTRL_CLKSEL_MASK);
+	setbits_le32(&prcm->cm_l3init_hsmmc2_clkctrl,
+			HSMMC_CLKCTRL_CLKSEL_MASK);
+
+	/* Select 32KHz clock as the source of GPTIMER1 */
+	setbits_le32(&prcm->cm_wkup_gptimer1_clkctrl,
+			GPTIMER1_CLKCTRL_CLKSEL_MASK);
+
+	do_enable_clocks(clk_domains_essential,
+			 clk_modules_hw_auto_essential,
+			 clk_modules_explicit_en_essential,
+			 1);
+}
+
+/*
+ * Enable non-essential clock domains, modules and
+ * do some additional special settings needed
+ */
+void enable_non_essential_clocks(void)
+{
+	u32 *const clk_domains_non_essential[] = {
+		&prcm->cm_mpu_m3_clkstctrl,
+		&prcm->cm_ivahd_clkstctrl,
+		&prcm->cm_dsp_clkstctrl,
+		&prcm->cm_dss_clkstctrl,
+		&prcm->cm_sgx_clkstctrl,
+		&prcm->cm1_abe_clkstctrl,
+		&prcm->cm_c2c_clkstctrl,
+		&prcm->cm_cam_clkstctrl,
+		&prcm->cm_dss_clkstctrl,
+		&prcm->cm_sdma_clkstctrl,
+		0
+	};
+
+	u32 *const clk_modules_hw_auto_non_essential[] = {
+		&prcm->cm_mpu_m3_mpu_m3_clkctrl,
+		&prcm->cm_ivahd_ivahd_clkctrl,
+		&prcm->cm_ivahd_sl2_clkctrl,
+		&prcm->cm_dsp_dsp_clkctrl,
+		&prcm->cm_l3_2_gpmc_clkctrl,
+		&prcm->cm_l3instr_l3_3_clkctrl,
+		&prcm->cm_l3instr_l3_instr_clkctrl,
+		&prcm->cm_l3instr_intrconn_wp1_clkctrl,
+		&prcm->cm_l3init_hsi_clkctrl,
+		&prcm->cm_l3init_hsusbtll_clkctrl,
+		0
+	};
+
+	u32 *const clk_modules_explicit_en_non_essential[] = {
+		&prcm->cm1_abe_aess_clkctrl,
+		&prcm->cm1_abe_pdm_clkctrl,
+		&prcm->cm1_abe_dmic_clkctrl,
+		&prcm->cm1_abe_mcasp_clkctrl,
+		&prcm->cm1_abe_mcbsp1_clkctrl,
+		&prcm->cm1_abe_mcbsp2_clkctrl,
+		&prcm->cm1_abe_mcbsp3_clkctrl,
+		&prcm->cm1_abe_slimbus_clkctrl,
+		&prcm->cm1_abe_timer5_clkctrl,
+		&prcm->cm1_abe_timer6_clkctrl,
+		&prcm->cm1_abe_timer7_clkctrl,
+		&prcm->cm1_abe_timer8_clkctrl,
+		&prcm->cm1_abe_wdt3_clkctrl,
+		&prcm->cm_l4per_gptimer9_clkctrl,
+		&prcm->cm_l4per_gptimer10_clkctrl,
+		&prcm->cm_l4per_gptimer11_clkctrl,
+		&prcm->cm_l4per_gptimer3_clkctrl,
+		&prcm->cm_l4per_gptimer4_clkctrl,
+		&prcm->cm_l4per_hdq1w_clkctrl,
+		&prcm->cm_l4per_mcspi2_clkctrl,
+		&prcm->cm_l4per_mcspi3_clkctrl,
+		&prcm->cm_l4per_mcspi4_clkctrl,
+		&prcm->cm_l4per_mmcsd3_clkctrl,
+		&prcm->cm_l4per_mmcsd4_clkctrl,
+		&prcm->cm_l4per_mmcsd5_clkctrl,
+		&prcm->cm_l4per_uart1_clkctrl,
+		&prcm->cm_l4per_uart2_clkctrl,
+		&prcm->cm_l4per_uart4_clkctrl,
+		&prcm->cm_wkup_keyboard_clkctrl,
+		&prcm->cm_wkup_wdtimer2_clkctrl,
+		&prcm->cm_cam_iss_clkctrl,
+		&prcm->cm_cam_fdif_clkctrl,
+		&prcm->cm_dss_dss_clkctrl,
+		&prcm->cm_sgx_sgx_clkctrl,
+		&prcm->cm_l3init_hsusbhost_clkctrl,
+		&prcm->cm_l3init_fsusb_clkctrl,
+		0
+	};
+
+	/* Enable optional functional clock for ISS */
+	setbits_le32(&prcm->cm_cam_iss_clkctrl, ISS_CLKCTRL_OPTFCLKEN_MASK);
+
+	/* Enable all optional functional clocks of DSS */
+	setbits_le32(&prcm->cm_dss_dss_clkctrl, DSS_CLKCTRL_OPTFCLKEN_MASK);
+
+	do_enable_clocks(clk_domains_non_essential,
+			 clk_modules_hw_auto_non_essential,
+			 clk_modules_explicit_en_non_essential,
+			 0);
+
+	/* Put camera module in no sleep mode */
+	clrsetbits_le32(&prcm->cm_cam_clkstctrl, MODULE_CLKCTRL_MODULEMODE_MASK,
+			CD_CLKCTRL_CLKTRCTRL_NO_SLEEP <<
+			MODULE_CLKCTRL_MODULEMODE_SHIFT);
+}