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Diffstat (limited to 'arch/arm/cpu/armv7/am33xx/clock_ti816x.c')
-rw-r--r--arch/arm/cpu/armv7/am33xx/clock_ti816x.c445
1 files changed, 0 insertions, 445 deletions
diff --git a/arch/arm/cpu/armv7/am33xx/clock_ti816x.c b/arch/arm/cpu/armv7/am33xx/clock_ti816x.c
deleted file mode 100644
index ace4a5a..0000000
--- a/arch/arm/cpu/armv7/am33xx/clock_ti816x.c
+++ /dev/null
@@ -1,445 +0,0 @@
-/*
- * clock_ti816x.c
- *
- * Clocks for TI816X based boards
- *
- * Copyright (C) 2013, Adeneo Embedded <www.adeneo-embedded.com>
- * Antoine Tenart, <atenart@adeneo-embedded.com>
- *
- * Based on TI-PSP-04.00.02.14 :
- *
- * Copyright (C) 2009, Texas Instruments, Incorporated
- *
- * 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.
- */
-
-#include <common.h>
-#include <asm/arch/ddr_defs.h>
-#include <asm/arch/cpu.h>
-#include <asm/arch/clock.h>
-#include <asm/arch/hardware.h>
-#include <asm/io.h>
-
-#include <asm/emif.h>
-
-#define CM_PLL_BASE (CTRL_BASE + 0x0400)
-
-/* Main PLL */
-#define MAIN_N 64
-#define MAIN_P 0x1
-#define MAIN_INTFREQ1 0x8
-#define MAIN_FRACFREQ1 0x800000
-#define MAIN_MDIV1 0x2
-#define MAIN_INTFREQ2 0xE
-#define MAIN_FRACFREQ2 0x0
-#define MAIN_MDIV2 0x1
-#define MAIN_INTFREQ3 0x8
-#define MAIN_FRACFREQ3 0xAAAAB0
-#define MAIN_MDIV3 0x3
-#define MAIN_INTFREQ4 0x9
-#define MAIN_FRACFREQ4 0x55554F
-#define MAIN_MDIV4 0x3
-#define MAIN_INTFREQ5 0x9
-#define MAIN_FRACFREQ5 0x374BC6
-#define MAIN_MDIV5 0xC
-#define MAIN_MDIV6 0x48
-#define MAIN_MDIV7 0x4
-
-/* DDR PLL */
-#if defined(CONFIG_TI816X_DDR_PLL_400) /* 400 MHz */
-#define DDR_N 59
-#define DDR_P 0x1
-#define DDR_MDIV1 0x4
-#define DDR_INTFREQ2 0x8
-#define DDR_FRACFREQ2 0xD99999
-#define DDR_MDIV2 0x1E
-#define DDR_INTFREQ3 0x8
-#define DDR_FRACFREQ3 0x0
-#define DDR_MDIV3 0x4
-#define DDR_INTFREQ4 0xE /* Expansion DDR clk */
-#define DDR_FRACFREQ4 0x0
-#define DDR_MDIV4 0x4
-#define DDR_INTFREQ5 0xE /* Expansion DDR clk */
-#define DDR_FRACFREQ5 0x0
-#define DDR_MDIV5 0x4
-#elif defined(CONFIG_TI816X_DDR_PLL_531) /* 531 MHz */
-#define DDR_N 59
-#define DDR_P 0x1
-#define DDR_MDIV1 0x3
-#define DDR_INTFREQ2 0x8
-#define DDR_FRACFREQ2 0xD99999
-#define DDR_MDIV2 0x1E
-#define DDR_INTFREQ3 0x8
-#define DDR_FRACFREQ3 0x0
-#define DDR_MDIV3 0x4
-#define DDR_INTFREQ4 0xE /* Expansion DDR clk */
-#define DDR_FRACFREQ4 0x0
-#define DDR_MDIV4 0x4
-#define DDR_INTFREQ5 0xE /* Expansion DDR clk */
-#define DDR_FRACFREQ5 0x0
-#define DDR_MDIV5 0x4
-#elif defined(CONFIG_TI816X_DDR_PLL_675) /* 675 MHz */
-#define DDR_N 50
-#define DDR_P 0x1
-#define DDR_MDIV1 0x2
-#define DDR_INTFREQ2 0x9
-#define DDR_FRACFREQ2 0x0
-#define DDR_MDIV2 0x19
-#define DDR_INTFREQ3 0x13
-#define DDR_FRACFREQ3 0x800000
-#define DDR_MDIV3 0x2
-#define DDR_INTFREQ4 0xE /* Expansion DDR clk */
-#define DDR_FRACFREQ4 0x0
-#define DDR_MDIV4 0x4
-#define DDR_INTFREQ5 0xE /* Expansion DDR clk */
-#define DDR_FRACFREQ5 0x0
-#define DDR_MDIV5 0x4
-#elif defined(CONFIG_TI816X_DDR_PLL_796) /* 796 MHz */
-#define DDR_N 59
-#define DDR_P 0x1
-#define DDR_MDIV1 0x2
-#define DDR_INTFREQ2 0x8
-#define DDR_FRACFREQ2 0xD99999
-#define DDR_MDIV2 0x1E
-#define DDR_INTFREQ3 0x8
-#define DDR_FRACFREQ3 0x0
-#define DDR_MDIV3 0x4
-#define DDR_INTFREQ4 0xE /* Expansion DDR clk */
-#define DDR_FRACFREQ4 0x0
-#define DDR_MDIV4 0x4
-#define DDR_INTFREQ5 0xE /* Expansion DDR clk */
-#define DDR_FRACFREQ5 0x0
-#define DDR_MDIV5 0x4
-#endif
-
-#define CONTROL_STATUS (CTRL_BASE + 0x40)
-#define DDR_RCD (CTRL_BASE + 0x070C)
-#define CM_TIMER1_CLKSEL (PRCM_BASE + 0x390)
-#define DMM_PAT_BASE_ADDR (DMM_BASE + 0x420)
-#define CM_ALWON_CUST_EFUSE_CLKCTRL (PRCM_BASE + 0x1628)
-
-#define INTCPS_SYSCONFIG 0x48200010
-#define CM_SYSCLK10_CLKSEL 0x48180324
-
-struct cm_pll {
- unsigned int mainpll_ctrl; /* offset 0x400 */
- unsigned int mainpll_pwd;
- unsigned int mainpll_freq1;
- unsigned int mainpll_div1;
- unsigned int mainpll_freq2;
- unsigned int mainpll_div2;
- unsigned int mainpll_freq3;
- unsigned int mainpll_div3;
- unsigned int mainpll_freq4;
- unsigned int mainpll_div4;
- unsigned int mainpll_freq5;
- unsigned int mainpll_div5;
- unsigned int resv0[1];
- unsigned int mainpll_div6;
- unsigned int resv1[1];
- unsigned int mainpll_div7;
- unsigned int ddrpll_ctrl; /* offset 0x440 */
- unsigned int ddrpll_pwd;
- unsigned int resv2[1];
- unsigned int ddrpll_div1;
- unsigned int ddrpll_freq2;
- unsigned int ddrpll_div2;
- unsigned int ddrpll_freq3;
- unsigned int ddrpll_div3;
- unsigned int ddrpll_freq4;
- unsigned int ddrpll_div4;
- unsigned int ddrpll_freq5;
- unsigned int ddrpll_div5;
- unsigned int videopll_ctrl; /* offset 0x470 */
- unsigned int videopll_pwd;
- unsigned int videopll_freq1;
- unsigned int videopll_div1;
- unsigned int videopll_freq2;
- unsigned int videopll_div2;
- unsigned int videopll_freq3;
- unsigned int videopll_div3;
- unsigned int resv3[4];
- unsigned int audiopll_ctrl; /* offset 0x4A0 */
- unsigned int audiopll_pwd;
- unsigned int resv4[2];
- unsigned int audiopll_freq2;
- unsigned int audiopll_div2;
- unsigned int audiopll_freq3;
- unsigned int audiopll_div3;
- unsigned int audiopll_freq4;
- unsigned int audiopll_div4;
- unsigned int audiopll_freq5;
- unsigned int audiopll_div5;
-};
-
-const struct cm_alwon *cmalwon = (struct cm_alwon *)CM_ALWON_BASE;
-const struct cm_def *cmdef = (struct cm_def *)CM_DEFAULT_BASE;
-const struct cm_pll *cmpll = (struct cm_pll *)CM_PLL_BASE;
-const struct wd_timer *wdtimer = (struct wd_timer *)WDT_BASE;
-
-void enable_dmm_clocks(void)
-{
- writel(PRCM_MOD_EN, &cmdef->l3fastclkstctrl);
- writel(PRCM_MOD_EN, &cmdef->emif0clkctrl);
- writel(PRCM_MOD_EN, &cmdef->emif1clkctrl);
-
- /* Wait for clocks to be active */
- while ((readl(&cmdef->l3fastclkstctrl) & 0x300) != 0x300)
- ;
- /* Wait for emif0 to be fully functional, including OCP */
- while (((readl(&cmdef->emif0clkctrl) >> 17) & 0x3) != 0)
- ;
- /* Wait for emif1 to be fully functional, including OCP */
- while (((readl(&cmdef->emif1clkctrl) >> 17) & 0x3) != 0)
- ;
-
- writel(PRCM_MOD_EN, &cmdef->dmmclkctrl);
- /* Wait for dmm to be fully functional, including OCP */
- while (((readl(&cmdef->dmmclkctrl) >> 17) & 0x3) != 0)
- ;
-
- /* Enable Tiled Access */
- writel(0x80000000, DMM_PAT_BASE_ADDR);
-}
-
-/* assume delay is aprox at least 1us */
-static void ddr_delay(int d)
-{
- int i;
-
- /*
- * read a control register.
- * this is a bit more delay and cannot be optimized by the compiler
- * assuming one read takes 200 cycles and A8 is runing 1 GHz
- * somewhat conservative setting
- */
- for (i = 0; i < 50*d; i++)
- readl(CONTROL_STATUS);
-}
-
-static void main_pll_init_ti816x(void)
-{
- u32 main_pll_ctrl = 0;
-
- /* Put the PLL in bypass mode by setting BIT2 in its ctrl reg */
- main_pll_ctrl = readl(&cmpll->mainpll_ctrl);
- main_pll_ctrl &= 0xFFFFFFFB;
- main_pll_ctrl |= BIT(2);
- writel(main_pll_ctrl, &cmpll->mainpll_ctrl);
-
- /* Enable PLL by setting BIT3 in its ctrl reg */
- main_pll_ctrl = readl(&cmpll->mainpll_ctrl);
- main_pll_ctrl &= 0xFFFFFFF7;
- main_pll_ctrl |= BIT(3);
- writel(main_pll_ctrl, &cmpll->mainpll_ctrl);
-
- /* Write the values of N,P in the CTRL reg */
- main_pll_ctrl = readl(&cmpll->mainpll_ctrl);
- main_pll_ctrl &= 0xFF;
- main_pll_ctrl |= (MAIN_N<<16 | MAIN_P<<8);
- writel(main_pll_ctrl, &cmpll->mainpll_ctrl);
-
- /* Power up clock1-7 */
- writel(0x0, &cmpll->mainpll_pwd);
-
- /* Program the freq and divider values for clock1-7 */
- writel((1<<31 | 1<<28 | (MAIN_INTFREQ1<<24) | MAIN_FRACFREQ1),
- &cmpll->mainpll_freq1);
- writel(((1<<8) | MAIN_MDIV1), &cmpll->mainpll_div1);
-
- writel((1<<31 | 1<<28 | (MAIN_INTFREQ2<<24) | MAIN_FRACFREQ2),
- &cmpll->mainpll_freq2);
- writel(((1<<8) | MAIN_MDIV2), &cmpll->mainpll_div2);
-
- writel((1<<31 | 1<<28 | (MAIN_INTFREQ3<<24) | MAIN_FRACFREQ3),
- &cmpll->mainpll_freq3);
- writel(((1<<8) | MAIN_MDIV3), &cmpll->mainpll_div3);
-
- writel((1<<31 | 1<<28 | (MAIN_INTFREQ4<<24) | MAIN_FRACFREQ4),
- &cmpll->mainpll_freq4);
- writel(((1<<8) | MAIN_MDIV4), &cmpll->mainpll_div4);
-
- writel((1<<31 | 1<<28 | (MAIN_INTFREQ5<<24) | MAIN_FRACFREQ5),
- &cmpll->mainpll_freq5);
- writel(((1<<8) | MAIN_MDIV5), &cmpll->mainpll_div5);
-
- writel((1<<8 | MAIN_MDIV6), &cmpll->mainpll_div6);
-
- writel((1<<8 | MAIN_MDIV7), &cmpll->mainpll_div7);
-
- /* Wait for PLL to lock */
- while ((readl(&cmpll->mainpll_ctrl) & BIT(7)) != BIT(7))
- ;
-
- /* Put the PLL in normal mode, disable bypass */
- main_pll_ctrl = readl(&cmpll->mainpll_ctrl);
- main_pll_ctrl &= 0xFFFFFFFB;
- writel(main_pll_ctrl, &cmpll->mainpll_ctrl);
-}
-
-static void ddr_pll_bypass_ti816x(void)
-{
- u32 ddr_pll_ctrl = 0;
-
- /* Put the PLL in bypass mode by setting BIT2 in its ctrl reg */
- ddr_pll_ctrl = readl(&cmpll->ddrpll_ctrl);
- ddr_pll_ctrl &= 0xFFFFFFFB;
- ddr_pll_ctrl |= BIT(2);
- writel(ddr_pll_ctrl, &cmpll->ddrpll_ctrl);
-}
-
-static void ddr_pll_init_ti816x(void)
-{
- u32 ddr_pll_ctrl = 0;
- /* Enable PLL by setting BIT3 in its ctrl reg */
- ddr_pll_ctrl = readl(&cmpll->ddrpll_ctrl);
- ddr_pll_ctrl &= 0xFFFFFFF7;
- ddr_pll_ctrl |= BIT(3);
- writel(ddr_pll_ctrl, &cmpll->ddrpll_ctrl);
-
- /* Write the values of N,P in the CTRL reg */
- ddr_pll_ctrl = readl(&cmpll->ddrpll_ctrl);
- ddr_pll_ctrl &= 0xFF;
- ddr_pll_ctrl |= (DDR_N<<16 | DDR_P<<8);
- writel(ddr_pll_ctrl, &cmpll->ddrpll_ctrl);
-
- ddr_delay(10);
-
- /* Power up clock1-5 */
- writel(0x0, &cmpll->ddrpll_pwd);
-
- /* Program the freq and divider values for clock1-3 */
- writel(((0<<8) | DDR_MDIV1), &cmpll->ddrpll_div1);
- ddr_delay(1);
- writel(((1<<8) | DDR_MDIV1), &cmpll->ddrpll_div1);
- writel((1<<31 | 1<<28 | (DDR_INTFREQ2<<24) | DDR_FRACFREQ2),
- &cmpll->ddrpll_freq2);
- writel(((1<<8) | DDR_MDIV2), &cmpll->ddrpll_div2);
- writel(((0<<8) | DDR_MDIV3), &cmpll->ddrpll_div3);
- ddr_delay(1);
- writel(((1<<8) | DDR_MDIV3), &cmpll->ddrpll_div3);
- ddr_delay(1);
- writel((0<<31 | 1<<28 | (DDR_INTFREQ3<<24) | DDR_FRACFREQ3),
- &cmpll->ddrpll_freq3);
- ddr_delay(1);
- writel((1<<31 | 1<<28 | (DDR_INTFREQ3<<24) | DDR_FRACFREQ3),
- &cmpll->ddrpll_freq3);
-
- ddr_delay(5);
-
- /* Wait for PLL to lock */
- while ((readl(&cmpll->ddrpll_ctrl) & BIT(7)) != BIT(7))
- ;
-
- /* Power up RCD */
- writel(BIT(0), DDR_RCD);
-}
-
-static void peripheral_enable(void)
-{
- /* Wake-up the l3_slow clock */
- writel(PRCM_MOD_EN, &cmalwon->l3slowclkstctrl);
-
- /*
- * Note on Timers:
- * There are 8 timers(0-7) out of which timer 0 is a secure timer.
- * Timer 0 mux should not be changed
- *
- * To access the timer registers we need the to be
- * enabled which is what we do in the first step
- */
-
- /* Enable timer1 */
- writel(PRCM_MOD_EN, &cmalwon->timer1clkctrl);
- /* Select timer1 clock to be CLKIN (27MHz) */
- writel(BIT(1), CM_TIMER1_CLKSEL);
-
- /* Wait for timer1 to be ON-ACTIVE */
- while (((readl(&cmalwon->l3slowclkstctrl)
- & (0x80000<<1))>>20) != 1)
- ;
- /* Wait for timer1 to be enabled */
- while (((readl(&cmalwon->timer1clkctrl) & 0x30000)>>16) != 0)
- ;
- /* Active posted mode */
- writel(PRCM_MOD_EN, (DM_TIMER1_BASE + 0x54));
- while (readl(DM_TIMER1_BASE + 0x10) & BIT(0))
- ;
- /* Start timer1 */
- writel(BIT(0), (DM_TIMER1_BASE + 0x38));
-
- /* eFuse */
- writel(PRCM_MOD_EN, CM_ALWON_CUST_EFUSE_CLKCTRL);
- while (readl(CM_ALWON_CUST_EFUSE_CLKCTRL) != PRCM_MOD_EN)
- ;
-
- /* Enable gpio0 */
- writel(PRCM_MOD_EN, &cmalwon->gpio0clkctrl);
- while (readl(&cmalwon->gpio0clkctrl) != PRCM_MOD_EN)
- ;
- writel((BIT(8)), &cmalwon->gpio0clkctrl);
-
- /* Enable spi */
- writel(PRCM_MOD_EN, &cmalwon->spiclkctrl);
- while (readl(&cmalwon->spiclkctrl) != PRCM_MOD_EN)
- ;
-
- /* Enable i2c0 */
- writel(PRCM_MOD_EN, &cmalwon->i2c0clkctrl);
- while (readl(&cmalwon->i2c0clkctrl) != PRCM_MOD_EN)
- ;
-
- /* Enable ethernet0 */
- writel(PRCM_MOD_EN, &cmalwon->ethclkstctrl);
- writel(PRCM_MOD_EN, &cmalwon->ethernet0clkctrl);
- writel(PRCM_MOD_EN, &cmalwon->ethernet1clkctrl);
-
- /* Enable hsmmc */
- writel(PRCM_MOD_EN, &cmalwon->sdioclkctrl);
- while (readl(&cmalwon->sdioclkctrl) != PRCM_MOD_EN)
- ;
-}
-
-void setup_clocks_for_console(void)
-{
- /* Fix ROM code bug - from TI-PSP-04.00.02.14 */
- writel(0x0, CM_SYSCLK10_CLKSEL);
-
- ddr_pll_bypass_ti816x();
-
- /* Enable uart0-2 */
- writel(PRCM_MOD_EN, &cmalwon->uart0clkctrl);
- while (readl(&cmalwon->uart0clkctrl) != PRCM_MOD_EN)
- ;
- writel(PRCM_MOD_EN, &cmalwon->uart1clkctrl);
- while (readl(&cmalwon->uart1clkctrl) != PRCM_MOD_EN)
- ;
- writel(PRCM_MOD_EN, &cmalwon->uart2clkctrl);
- while (readl(&cmalwon->uart2clkctrl) != PRCM_MOD_EN)
- ;
- while ((readl(&cmalwon->l3slowclkstctrl) & 0x2100) != 0x2100)
- ;
-}
-
-void prcm_init(void)
-{
- /* Enable the control */
- writel(PRCM_MOD_EN, &cmalwon->controlclkctrl);
-
- main_pll_init_ti816x();
- ddr_pll_init_ti816x();
-
- /*
- * With clk freqs setup to desired values,
- * enable the required peripherals
- */
- peripheral_enable();
-}
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