leandrof/u-boot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

ARM: AM33xx: Cleanup clocks layer

Browse Source 
Cleaning up the clocks layer.
This helps in addition of new Soc with minimal
changes.
This is derived from OMAP4 boards.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Tested-by: Heiko Schocher <hs@denx.de>
Acked-by: Heiko Schocher <hs@denx.de>
This commit is contained in:
Lokesh Vutla 2013-07-30 10:48:53 +05:30 committed by Tom Rini
parent 94d77fb656
commit 95cb69faeb
10 changed files with 189 additions and 232 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
arch/arm/cpu/armv7/am33xx/board.c
View File

@ -56,12 +56,6 @@ int cpu_mmc_init(bd_t *bis)
}
#endif
void setup_clocks_for_console(void)
{
/* Not yet implemented */
return;
}
/* AM33XX has two MUSB controllers which can be host or gadget */
#if (defined(CONFIG_MUSB_GADGET) || defined(CONFIG_MUSB_HOST)) && \
(defined(CONFIG_AM335X_USB0) || defined(CONFIG_AM335X_USB1))

62
arch/arm/cpu/armv7/am33xx/clock.c
View File

@ -98,7 +98,7 @@ void do_setup_dpll(const struct dpll_regs *dpll_regs,
wait_for_lock(dpll_regs);
}
void setup_dplls(void)
static void setup_dplls(void)
{
const struct dpll_params *params;
do_setup_dpll(&dpll_core_regs, &dpll_core);
@ -109,3 +109,63 @@ void setup_dplls(void)
params = get_dpll_ddr_params();
do_setup_dpll(&dpll_ddr_regs, params);
}
static inline void wait_for_clk_enable(u32 *clkctrl_addr)
{
u32 clkctrl, idlest = MODULE_CLKCTRL_IDLEST_DISABLED;
u32 bound = LDELAY;
while ((idlest == MODULE_CLKCTRL_IDLEST_DISABLED) ||
(idlest == MODULE_CLKCTRL_IDLEST_TRANSITIONING)) {
clkctrl = readl(clkctrl_addr);
idlest = (clkctrl & MODULE_CLKCTRL_IDLEST_MASK) >>
MODULE_CLKCTRL_IDLEST_SHIFT;
if (--bound == 0) {
printf("Clock enable failed for 0x%p idlest 0x%x\n",
clkctrl_addr, clkctrl);
return;
}
}
}
static inline void enable_clock_module(u32 *const clkctrl_addr, u32 enable_mode,
u32 wait_for_enable)
{
clrsetbits_le32(clkctrl_addr, MODULE_CLKCTRL_MODULEMODE_MASK,
enable_mode << MODULE_CLKCTRL_MODULEMODE_SHIFT);
debug("Enable clock module - %p\n", clkctrl_addr);
if (wait_for_enable)
wait_for_clk_enable(clkctrl_addr);
}
static inline void enable_clock_domain(u32 *const clkctrl_reg, u32 enable_mode)
{
clrsetbits_le32(clkctrl_reg, CD_CLKCTRL_CLKTRCTRL_MASK,
enable_mode << CD_CLKCTRL_CLKTRCTRL_SHIFT);
debug("Enable clock domain - %p\n", clkctrl_reg);
}
void do_enable_clocks(u32 *const *clk_domains,
u32 *const *clk_modules_explicit_en, u8 wait_for_enable)
{
u32 i, max = 100;
/* Put the clock domains in SW_WKUP mode */
for (i = 0; (i < max) && clk_domains[i]; i++) {
enable_clock_domain(clk_domains[i],
CD_CLKCTRL_CLKTRCTRL_SW_WKUP);
}
/* Clock modules that need to be put in SW_EXPLICIT_EN mode */
for (i = 0; (i < max) && clk_modules_explicit_en[i]; i++) {
enable_clock_module(clk_modules_explicit_en[i],
MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN,
wait_for_enable);
};
}
void prcm_init()
{
enable_basic_clocks();
setup_dplls();
}

267
arch/arm/cpu/armv7/am33xx/clock_am33xx.c
View File

@ -14,17 +14,12 @@
#include <asm/arch/hardware.h>
#include <asm/io.h>
#define PRCM_MOD_EN 0x2
#define PRCM_FORCE_WAKEUP 0x2
#define PRCM_FUNCTL 0x0
#define CPGMAC0_IDLE 0x30000
#define OSC (V_OSCK/1000000)
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;
struct cm_perpll *const cmper = (struct cm_perpll *)CM_PER;
struct cm_wkuppll *const cmwkup = (struct cm_wkuppll *)CM_WKUP;
struct cm_dpll *const cmdpll = (struct cm_dpll *)CM_DPLL;
struct cm_rtc *const cmrtc = (struct cm_rtc *)CM_RTC;
const struct dpll_regs dpll_mpu_regs = {
.cm_clkmode_dpll = CM_WKUP + 0x88,
@ -63,199 +58,85 @@ const struct dpll_params dpll_core = {
const struct dpll_params dpll_per = {
960, OSC-1, 5, -1, -1, -1, -1};
static void enable_interface_clocks(void)
void setup_clocks_for_console(void)
{
/* Enable all the Interconnect Modules */
writel(PRCM_MOD_EN, &cmper->l3clkctrl);
while (readl(&cmper->l3clkctrl) != PRCM_MOD_EN)
;
clrsetbits_le32(&cmwkup->wkclkstctrl, CD_CLKCTRL_CLKTRCTRL_MASK,
CD_CLKCTRL_CLKTRCTRL_SW_WKUP <<
CD_CLKCTRL_CLKTRCTRL_SHIFT);
writel(PRCM_MOD_EN, &cmper->l4lsclkctrl);
while (readl(&cmper->l4lsclkctrl) != PRCM_MOD_EN)
;
clrsetbits_le32(&cmper->l4hsclkstctrl, CD_CLKCTRL_CLKTRCTRL_MASK,
CD_CLKCTRL_CLKTRCTRL_SW_WKUP <<
CD_CLKCTRL_CLKTRCTRL_SHIFT);
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)
;
clrsetbits_le32(&cmwkup->wkup_uart0ctrl,
MODULE_CLKCTRL_MODULEMODE_MASK,
MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN <<
MODULE_CLKCTRL_MODULEMODE_SHIFT);
clrsetbits_le32(&cmper->uart1clkctrl,
MODULE_CLKCTRL_MODULEMODE_MASK,
MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN <<
MODULE_CLKCTRL_MODULEMODE_SHIFT);
clrsetbits_le32(&cmper->uart2clkctrl,
MODULE_CLKCTRL_MODULEMODE_MASK,
MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN <<
MODULE_CLKCTRL_MODULEMODE_SHIFT);
clrsetbits_le32(&cmper->uart3clkctrl,
MODULE_CLKCTRL_MODULEMODE_MASK,
MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN <<
MODULE_CLKCTRL_MODULEMODE_SHIFT);
clrsetbits_le32(&cmper->uart4clkctrl,
MODULE_CLKCTRL_MODULEMODE_MASK,
MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN <<
MODULE_CLKCTRL_MODULEMODE_SHIFT);
clrsetbits_le32(&cmper->uart5clkctrl,
MODULE_CLKCTRL_MODULEMODE_MASK,
MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN <<
MODULE_CLKCTRL_MODULEMODE_SHIFT);
}
/*
* 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)
void enable_basic_clocks(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);
}
u32 *const clk_domains[] = {
&cmper->l3clkstctrl,
&cmper->l4fwclkstctrl,
&cmper->l3sclkstctrl,
&cmper->l4lsclkstctrl,
&cmwkup->wkclkstctrl,
&cmper->emiffwclkctrl,
&cmrtc->clkstctrl,
0
};
/*
* 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)
;
u32 *const clk_modules_explicit_en[] = {
&cmper->l3clkctrl,
&cmper->l4lsclkctrl,
&cmper->l4fwclkctrl,
&cmwkup->wkl4wkclkctrl,
&cmper->l3instrclkctrl,
&cmper->l4hsclkctrl,
&cmwkup->wkgpio0clkctrl,
&cmwkup->wkctrlclkctrl,
&cmper->timer2clkctrl,
&cmper->gpmcclkctrl,
&cmper->elmclkctrl,
&cmper->mmc0clkctrl,
&cmper->mmc1clkctrl,
&cmwkup->wkup_i2c0ctrl,
&cmper->gpio1clkctrl,
&cmper->gpio2clkctrl,
&cmper->gpio3clkctrl,
&cmper->i2c1clkctrl,
&cmper->cpgmac0clkctrl,
&cmper->spi0clkctrl,
&cmrtc->rtcclkctrl,
&cmper->usb0clkctrl,
&cmper->emiffwclkctrl,
&cmper->emifclkctrl,
0
};
/* Enable the module clock */
writel(PRCM_MOD_EN, &cmper->timer2clkctrl);
while (readl(&cmper->timer2clkctrl) != PRCM_MOD_EN)
;
do_enable_clocks(clk_domains, clk_modules_explicit_en, 1);
/* 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)
;
/* MMC1 */
writel(PRCM_MOD_EN, &cmper->mmc1clkctrl);
while (readl(&cmper->mmc1clkctrl) != 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)
;
}
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()
{
setup_dplls();
/* Enable the required interconnect clocks */
enable_interface_clocks();
/* Power domain wake up transition */
power_domain_wkup_transition();
/* Enable the required peripherals */
enable_per_clocks();
}

19
arch/arm/cpu/armv7/am33xx/clock_ti814x.c
View File

@ -264,11 +264,6 @@ const struct sata_pll *spll = (struct sata_pll *)SATA_PLL_BASE;
*/
static void enable_per_clocks(void)
{
/* UART0 */
writel(PRCM_MOD_EN, &cmalwon->uart0clkctrl);
while (readl(&cmalwon->uart0clkctrl) != PRCM_MOD_EN)
;
/* HSMMC1 */
writel(PRCM_MOD_EN, &cmalwon->mmchs1clkctrl);
while (readl(&cmalwon->mmchs1clkctrl) != PRCM_MOD_EN)
@ -455,8 +450,6 @@ void sata_pll_config(void)
;
}
void enable_emif_clocks(void) {};
void enable_dmm_clocks(void)
{
writel(PRCM_MOD_EN, &cmdef->fwclkctrl);
@ -477,13 +470,19 @@ void enable_dmm_clocks(void)
;
}
void setup_clocks_for_console(void)
{
unlock_pll_control_mmr();
/* UART0 */
writel(PRCM_MOD_EN, &cmalwon->uart0clkctrl);
while (readl(&cmalwon->uart0clkctrl) != PRCM_MOD_EN)
;
}
/*
* Configure the PLL/PRCM for necessary peripherals
*/
void pll_init()
void prcm_init(void)
{
unlock_pll_control_mmr();
/* Enable the control module */
writel(PRCM_MOD_EN, &cmalwon->controlclkctrl);

1
arch/arm/cpu/armv7/am33xx/emif4.c
View File

@ -87,7 +87,6 @@ void config_ddr(unsigned int pll, unsigned int ioctrl,
const struct ddr_data *data, const struct cmd_control *ctrl,
const struct emif_regs *regs, int nr)
{
enable_emif_clocks();
ddr_pll_config(pll);
config_vtp(nr);
config_cmd_ctrl(ctrl, nr);

28
arch/arm/include/asm/arch-am33xx/clock.h
View File

@ -15,6 +15,28 @@
#define LDELAY 1000000
/*CM_<clock_domain>__CLKCTRL */
#define CD_CLKCTRL_CLKTRCTRL_SHIFT 0
#define CD_CLKCTRL_CLKTRCTRL_MASK 3
#define CD_CLKCTRL_CLKTRCTRL_NO_SLEEP 0
#define CD_CLKCTRL_CLKTRCTRL_SW_SLEEP 1
#define CD_CLKCTRL_CLKTRCTRL_SW_WKUP 2
/* CM_<clock_domain>_<module>_CLKCTRL */
#define MODULE_CLKCTRL_MODULEMODE_SHIFT 0
#define MODULE_CLKCTRL_MODULEMODE_MASK 3
#define MODULE_CLKCTRL_IDLEST_SHIFT 16
#define MODULE_CLKCTRL_IDLEST_MASK (3 << 16)
#define MODULE_CLKCTRL_MODULEMODE_SW_DISABLE 0
#define MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN 2
#define MODULE_CLKCTRL_IDLEST_FULLY_FUNCTIONAL 0
#define MODULE_CLKCTRL_IDLEST_TRANSITIONING 1
#define MODULE_CLKCTRL_IDLEST_IDLE 2
#define MODULE_CLKCTRL_IDLEST_DISABLED 3
/* CM_CLKMODE_DPLL */
#define CM_CLKMODE_DPLL_REGM4XEN_SHIFT 11
#define CM_CLKMODE_DPLL_REGM4XEN_MASK (1 << 11)
@ -77,10 +99,12 @@ extern const struct dpll_params dpll_core;
extern const struct dpll_params dpll_per;
extern const struct dpll_params dpll_ddr;
extern const struct cm_wkuppll *cmwkup;
extern struct cm_wkuppll *const cmwkup;
void setup_dplls(void);
const struct dpll_params *get_dpll_ddr_params(void);
void do_setup_dpll(const struct dpll_regs *, const struct dpll_params *);
void prcm_init(void);
void enable_basic_clocks(void);
void do_enable_clocks(u32 *const *, u32 *const *, u8);
#endif

2
arch/arm/include/asm/arch-am33xx/ddr_defs.h
View File

@ -146,8 +146,6 @@ void set_sdram_timings(const struct emif_regs *regs, int nr);
*/
void config_ddr_phy(const struct emif_regs *regs, int nr);
void ddr_pll_config(unsigned int ddrpll_m);
struct ddr_cmd_regs {
unsigned int resv0[7];
unsigned int cm0csratio; /* offset 0x01C */

11
board/isee/igep0033/board.c
View File

@ -103,11 +103,7 @@ void s_init(void)
;
#ifdef CONFIG_SPL_BUILD
/* Setup the PLLs and the clocks for the peripherals */
pll_init();
/* Enable RTC32K clock */
rtc32k_enable();
setup_clocks_for_console();
enable_uart0_pin_mux();
@ -116,6 +112,11 @@ void s_init(void)
preloader_console_init();
prcm_init();
/* Enable RTC32K clock */
rtc32k_enable();
/* Configure board pin mux */
enable_board_pin_mux();

13
board/ti/am335x/board.c
View File

@ -317,10 +317,7 @@ void s_init(void)
#if defined(CONFIG_SPL_BUILD) || defined(CONFIG_NOR_BOOT)
/* Setup the PLLs and the clocks for the peripherals */
pll_init();
/* Enable RTC32K clock */
rtc32k_enable();
setup_clocks_for_console();
#ifdef CONFIG_SERIAL1
enable_uart0_pin_mux();
@ -354,12 +351,14 @@ void s_init(void)
preloader_console_init();
#endif
/* Initalize the board header */
enable_i2c0_pin_mux();
i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
prcm_init();
if (read_eeprom(&header) < 0)
puts("Could not get board ID.\n");
/* Enable RTC32K clock */
rtc32k_enable();
enable_board_pin_mux(&header);
if (board_is_evm_sk(&header)) {
/*

12
board/ti/ti814x/evm.c
View File

@ -125,11 +125,7 @@ void s_init(void)
/* Enable timer */
timer_init();
/* Setup the PLLs and the clocks for the peripherals */
pll_init();
/* Enable RTC32K clock */
rtc32k_enable();
setup_clocks_for_console();
/* Set UART pins */
enable_uart0_pin_mux();
@ -147,6 +143,12 @@ void s_init(void)
preloader_console_init();
/* Setup the PLLs and the clocks for the peripherals */
prcm_init();
/* Enable RTC32K clock */
rtc32k_enable();
config_dmm(&evm_lisa_map_regs);
config_ddr(0, 0, &evm_ddr2_data, &evm_ddr2_cctrl_data,