am33xx: refactor am33xx clocks and add ti814x support

Split clock.c for am335x and ti814x and add ti814x specific
clock support.

Signed-off-by: Matt Porter <mporter@ti.com>

1 files changed, 0 insertions, 374 deletions

diff --git a/arch/arm/cpu/armv7/am33xx/clock.c b/arch/arm/cpu/armv7/am33xx/clock.c
deleted file mode 100644
index d7d98d1..0000000
--- a/arch/arm/cpu/armv7/am33xx/clock.c
+++ /dev/null
@@ -1,374 +0,0 @@
-/*
- * clock.c
- *
- * clocks for AM33XX based boards
- *
- * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
- *
- * 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/cpu.h>
-#include <asm/arch/clock.h>
-#include <asm/arch/hardware.h>
-#include <asm/io.h>
-
-#define PRCM_MOD_EN		0x2
-#define PRCM_FORCE_WAKEUP	0x2
-#define PRCM_FUNCTL		0x0
-
-#define PRCM_EMIF_CLK_ACTIVITY	BIT(2)
-#define PRCM_L3_GCLK_ACTIVITY	BIT(4)
-
-#define PLL_BYPASS_MODE		0x4
-#define ST_MN_BYPASS		0x00000100
-#define ST_DPLL_CLK		0x00000001
-#define CLK_SEL_MASK		0x7ffff
-#define CLK_DIV_MASK		0x1f
-#define CLK_DIV2_MASK		0x7f
-#define CLK_SEL_SHIFT		0x8
-#define CLK_MODE_SEL		0x7
-#define CLK_MODE_MASK		0xfffffff8
-#define CLK_DIV_SEL		0xFFFFFFE0
-#define CPGMAC0_IDLE		0x30000
-#define DPLL_CLKDCOLDO_GATE_CTRL        0x300
-
-const struct cm_perpll *cmper = (struct cm_perpll *)CM_PER;
-const struct cm_wkuppll *cmwkup = (struct cm_wkuppll *)CM_WKUP;
-const struct cm_dpll *cmdpll = (struct cm_dpll *)CM_DPLL;
-const struct cm_rtc *cmrtc = (struct cm_rtc *)CM_RTC;
-
-static void enable_interface_clocks(void)
-{
-	/* Enable all the Interconnect Modules */
-	writel(PRCM_MOD_EN, &cmper->l3clkctrl);
-	while (readl(&cmper->l3clkctrl) != PRCM_MOD_EN)
-		;
-
-	writel(PRCM_MOD_EN, &cmper->l4lsclkctrl);
-	while (readl(&cmper->l4lsclkctrl) != PRCM_MOD_EN)
-		;
-
-	writel(PRCM_MOD_EN, &cmper->l4fwclkctrl);
-	while (readl(&cmper->l4fwclkctrl) != PRCM_MOD_EN)
-		;
-
-	writel(PRCM_MOD_EN, &cmwkup->wkl4wkclkctrl);
-	while (readl(&cmwkup->wkl4wkclkctrl) != PRCM_MOD_EN)
-		;
-
-	writel(PRCM_MOD_EN, &cmper->l3instrclkctrl);
-	while (readl(&cmper->l3instrclkctrl) != PRCM_MOD_EN)
-		;
-
-	writel(PRCM_MOD_EN, &cmper->l4hsclkctrl);
-	while (readl(&cmper->l4hsclkctrl) != PRCM_MOD_EN)
-		;
-
-	writel(PRCM_MOD_EN, &cmwkup->wkgpio0clkctrl);
-	while (readl(&cmwkup->wkgpio0clkctrl) != PRCM_MOD_EN)
-		;
-}
-
-/*
- * Force power domain wake up transition
- * Ensure that the corresponding interface clock is active before
- * using the peripheral
- */
-static void power_domain_wkup_transition(void)
-{
-	writel(PRCM_FORCE_WAKEUP, &cmper->l3clkstctrl);
-	writel(PRCM_FORCE_WAKEUP, &cmper->l4lsclkstctrl);
-	writel(PRCM_FORCE_WAKEUP, &cmwkup->wkclkstctrl);
-	writel(PRCM_FORCE_WAKEUP, &cmper->l4fwclkstctrl);
-	writel(PRCM_FORCE_WAKEUP, &cmper->l3sclkstctrl);
-}
-
-/*
- * Enable the peripheral clock for required peripherals
- */
-static void enable_per_clocks(void)
-{
-	/* Enable the control module though RBL would have done it*/
-	writel(PRCM_MOD_EN, &cmwkup->wkctrlclkctrl);
-	while (readl(&cmwkup->wkctrlclkctrl) != PRCM_MOD_EN)
-		;
-
-	/* Enable the module clock */
-	writel(PRCM_MOD_EN, &cmper->timer2clkctrl);
-	while (readl(&cmper->timer2clkctrl) != PRCM_MOD_EN)
-		;
-
-	/* Select the Master osc 24 MHZ as Timer2 clock source */
-	writel(0x1, &cmdpll->clktimer2clk);
-
-	/* UART0 */
-	writel(PRCM_MOD_EN, &cmwkup->wkup_uart0ctrl);
-	while (readl(&cmwkup->wkup_uart0ctrl) != PRCM_MOD_EN)
-		;
-
-	/* UART1 */
-#ifdef CONFIG_SERIAL2
-	writel(PRCM_MOD_EN, &cmper->uart1clkctrl);
-	while (readl(&cmper->uart1clkctrl) != PRCM_MOD_EN)
-		;
-#endif /* CONFIG_SERIAL2 */
-
-	/* UART2 */
-#ifdef CONFIG_SERIAL3
-	writel(PRCM_MOD_EN, &cmper->uart2clkctrl);
-	while (readl(&cmper->uart2clkctrl) != PRCM_MOD_EN)
-		;
-#endif /* CONFIG_SERIAL3 */
-
-	/* UART3 */
-#ifdef CONFIG_SERIAL4
-	writel(PRCM_MOD_EN, &cmper->uart3clkctrl);
-	while (readl(&cmper->uart3clkctrl) != PRCM_MOD_EN)
-		;
-#endif /* CONFIG_SERIAL4 */
-
-	/* UART4 */
-#ifdef CONFIG_SERIAL5
-	writel(PRCM_MOD_EN, &cmper->uart4clkctrl);
-	while (readl(&cmper->uart4clkctrl) != PRCM_MOD_EN)
-		;
-#endif /* CONFIG_SERIAL5 */
-
-	/* UART5 */
-#ifdef CONFIG_SERIAL6
-	writel(PRCM_MOD_EN, &cmper->uart5clkctrl);
-	while (readl(&cmper->uart5clkctrl) != PRCM_MOD_EN)
-		;
-#endif /* CONFIG_SERIAL6 */
-
-	/* GPMC */
-	writel(PRCM_MOD_EN, &cmper->gpmcclkctrl);
-	while (readl(&cmper->gpmcclkctrl) != PRCM_MOD_EN)
-		;
-
-	/* ELM */
-	writel(PRCM_MOD_EN, &cmper->elmclkctrl);
-	while (readl(&cmper->elmclkctrl) != PRCM_MOD_EN)
-		;
-
-	/* MMC0*/
-	writel(PRCM_MOD_EN, &cmper->mmc0clkctrl);
-	while (readl(&cmper->mmc0clkctrl) != PRCM_MOD_EN)
-		;
-
-	/* i2c0 */
-	writel(PRCM_MOD_EN, &cmwkup->wkup_i2c0ctrl);
-	while (readl(&cmwkup->wkup_i2c0ctrl) != PRCM_MOD_EN)
-		;
-
-	/* gpio1 module */
-	writel(PRCM_MOD_EN, &cmper->gpio1clkctrl);
-	while (readl(&cmper->gpio1clkctrl) != PRCM_MOD_EN)
-		;
-
-	/* gpio2 module */
-	writel(PRCM_MOD_EN, &cmper->gpio2clkctrl);
-	while (readl(&cmper->gpio2clkctrl) != PRCM_MOD_EN)
-		;
-
-	/* gpio3 module */
-	writel(PRCM_MOD_EN, &cmper->gpio3clkctrl);
-	while (readl(&cmper->gpio3clkctrl) != PRCM_MOD_EN)
-		;
-
-	/* i2c1 */
-	writel(PRCM_MOD_EN, &cmper->i2c1clkctrl);
-	while (readl(&cmper->i2c1clkctrl) != PRCM_MOD_EN)
-		;
-
-	/* Ethernet */
-	writel(PRCM_MOD_EN, &cmper->cpgmac0clkctrl);
-	while ((readl(&cmper->cpgmac0clkctrl) & CPGMAC0_IDLE) != PRCM_FUNCTL)
-		;
-
-	/* spi0 */
-	writel(PRCM_MOD_EN, &cmper->spi0clkctrl);
-	while (readl(&cmper->spi0clkctrl) != PRCM_MOD_EN)
-		;
-
-	/* RTC */
-	writel(PRCM_MOD_EN, &cmrtc->rtcclkctrl);
-	while (readl(&cmrtc->rtcclkctrl) != PRCM_MOD_EN)
-		;
-
-	/* MUSB */
-	writel(PRCM_MOD_EN, &cmper->usb0clkctrl);
-	while (readl(&cmper->usb0clkctrl) != PRCM_MOD_EN)
-		;
-}
-
-static void mpu_pll_config(void)
-{
-	u32 clkmode, clksel, div_m2;
-
-	clkmode = readl(&cmwkup->clkmoddpllmpu);
-	clksel = readl(&cmwkup->clkseldpllmpu);
-	div_m2 = readl(&cmwkup->divm2dpllmpu);
-
-	/* Set the PLL to bypass Mode */
-	writel(PLL_BYPASS_MODE, &cmwkup->clkmoddpllmpu);
-	while (readl(&cmwkup->idlestdpllmpu) != ST_MN_BYPASS)
-		;
-
-	clksel = clksel & (~CLK_SEL_MASK);
-	clksel = clksel | ((MPUPLL_M << CLK_SEL_SHIFT) | MPUPLL_N);
-	writel(clksel, &cmwkup->clkseldpllmpu);
-
-	div_m2 = div_m2 & ~CLK_DIV_MASK;
-	div_m2 = div_m2 | MPUPLL_M2;
-	writel(div_m2, &cmwkup->divm2dpllmpu);
-
-	clkmode = clkmode | CLK_MODE_SEL;
-	writel(clkmode, &cmwkup->clkmoddpllmpu);
-
-	while (readl(&cmwkup->idlestdpllmpu) != ST_DPLL_CLK)
-		;
-}
-
-static void core_pll_config(void)
-{
-	u32 clkmode, clksel, div_m4, div_m5, div_m6;
-
-	clkmode = readl(&cmwkup->clkmoddpllcore);
-	clksel = readl(&cmwkup->clkseldpllcore);
-	div_m4 = readl(&cmwkup->divm4dpllcore);
-	div_m5 = readl(&cmwkup->divm5dpllcore);
-	div_m6 = readl(&cmwkup->divm6dpllcore);
-
-	/* Set the PLL to bypass Mode */
-	writel(PLL_BYPASS_MODE, &cmwkup->clkmoddpllcore);
-
-	while (readl(&cmwkup->idlestdpllcore) != ST_MN_BYPASS)
-		;
-
-	clksel = clksel & (~CLK_SEL_MASK);
-	clksel = clksel | ((COREPLL_M << CLK_SEL_SHIFT) | COREPLL_N);
-	writel(clksel, &cmwkup->clkseldpllcore);
-
-	div_m4 = div_m4 & ~CLK_DIV_MASK;
-	div_m4 = div_m4 | COREPLL_M4;
-	writel(div_m4, &cmwkup->divm4dpllcore);
-
-	div_m5 = div_m5 & ~CLK_DIV_MASK;
-	div_m5 = div_m5 | COREPLL_M5;
-	writel(div_m5, &cmwkup->divm5dpllcore);
-
-	div_m6 = div_m6 & ~CLK_DIV_MASK;
-	div_m6 = div_m6 | COREPLL_M6;
-	writel(div_m6, &cmwkup->divm6dpllcore);
-
-	clkmode = clkmode | CLK_MODE_SEL;
-	writel(clkmode, &cmwkup->clkmoddpllcore);
-
-	while (readl(&cmwkup->idlestdpllcore) != ST_DPLL_CLK)
-		;
-}
-
-static void per_pll_config(void)
-{
-	u32 clkmode, clksel, div_m2;
-
-	clkmode = readl(&cmwkup->clkmoddpllper);
-	clksel = readl(&cmwkup->clkseldpllper);
-	div_m2 = readl(&cmwkup->divm2dpllper);
-
-	/* Set the PLL to bypass Mode */
-	writel(PLL_BYPASS_MODE, &cmwkup->clkmoddpllper);
-
-	while (readl(&cmwkup->idlestdpllper) != ST_MN_BYPASS)
-		;
-
-	clksel = clksel & (~CLK_SEL_MASK);
-	clksel = clksel | ((PERPLL_M << CLK_SEL_SHIFT) | PERPLL_N);
-	writel(clksel, &cmwkup->clkseldpllper);
-
-	div_m2 = div_m2 & ~CLK_DIV2_MASK;
-	div_m2 = div_m2 | PERPLL_M2;
-	writel(div_m2, &cmwkup->divm2dpllper);
-
-	clkmode = clkmode | CLK_MODE_SEL;
-	writel(clkmode, &cmwkup->clkmoddpllper);
-
-	while (readl(&cmwkup->idlestdpllper) != ST_DPLL_CLK)
-		;
-
-	writel(DPLL_CLKDCOLDO_GATE_CTRL, &cmwkup->clkdcoldodpllper);
-}
-
-void ddr_pll_config(unsigned int ddrpll_m)
-{
-	u32 clkmode, clksel, div_m2;
-
-	clkmode = readl(&cmwkup->clkmoddpllddr);
-	clksel = readl(&cmwkup->clkseldpllddr);
-	div_m2 = readl(&cmwkup->divm2dpllddr);
-
-	/* Set the PLL to bypass Mode */
-	clkmode = (clkmode & CLK_MODE_MASK) | PLL_BYPASS_MODE;
-	writel(clkmode, &cmwkup->clkmoddpllddr);
-
-	/* Wait till bypass mode is enabled */
-	while ((readl(&cmwkup->idlestdpllddr) & ST_MN_BYPASS)
-				!= ST_MN_BYPASS)
-		;
-
-	clksel = clksel & (~CLK_SEL_MASK);
-	clksel = clksel | ((ddrpll_m << CLK_SEL_SHIFT) | DDRPLL_N);
-	writel(clksel, &cmwkup->clkseldpllddr);
-
-	div_m2 = div_m2 & CLK_DIV_SEL;
-	div_m2 = div_m2 | DDRPLL_M2;
-	writel(div_m2, &cmwkup->divm2dpllddr);
-
-	clkmode = (clkmode & CLK_MODE_MASK) | CLK_MODE_SEL;
-	writel(clkmode, &cmwkup->clkmoddpllddr);
-
-	/* Wait till dpll is locked */
-	while ((readl(&cmwkup->idlestdpllddr) & ST_DPLL_CLK) != ST_DPLL_CLK)
-		;
-}
-
-void enable_emif_clocks(void)
-{
-	/* Enable the  EMIF_FW Functional clock */
-	writel(PRCM_MOD_EN, &cmper->emiffwclkctrl);
-	/* Enable EMIF0 Clock */
-	writel(PRCM_MOD_EN, &cmper->emifclkctrl);
-	/* Poll if module is functional */
-	while ((readl(&cmper->emifclkctrl)) != PRCM_MOD_EN)
-		;
-}
-
-/*
- * Configure the PLL/PRCM for necessary peripherals
- */
-void pll_init()
-{
-	mpu_pll_config();
-	core_pll_config();
-	per_pll_config();
-
-	/* Enable the required interconnect clocks */
-	enable_interface_clocks();
-
-	/* Power domain wake up transition */
-	power_domain_wkup_transition();
-
-	/* Enable the required peripherals */
-	enable_per_clocks();
-}