Commit a64459c4 authored by Aida Mynzhasova's avatar Aida Mynzhasova Committed by Tony Lindgren
Browse files

ARM: OMAP2+: Add clock domain support for dm816x 

This patch adds required definitions and structures for clockdomain
initialization, so omap3xxx_clockdomains_init() was substituted by
new ti81xx_clockdomains_init() while early initialization of
TI81XX platform.

Note that we now need to have 81xx in a separate CONFIG_SOC_TI81XX
block instead inside the ifdef block for omap3 to avoid make
randconfig build errors.

This code is based on the TI81XX-LINUX-PSP-04.04.00.02 patches
published at:

http://downloads.ti.com/dsps/dsps_public_sw/psp/LinuxPSP/TI81XX_04_04/04_04_00_02/index_FDS.html



Cc: Brian Hutchinson <b.hutchman@gmail.com>
Cc: Paul Walmsley <paul@pwsan.com>
Signed-off-by: default avatarAida Mynzhasova <aida.mynzhasova@skitlab.ru>
[tony@atomide.com: updated to apply, renamed to clockdomains81xx.c,
 fixed to use am33xx_clkdm_operations, various fixes suggested by
 Paul Walmsley]
Reviewed-by: default avatarPaul Walmsley <paul@pwsan.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent abf8cc1d

arch/arm/mach-omap2/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -171,6 +171,8 @@ obj-$(CONFIG_ARCH_OMAP4) += $(clockdomain-common) 
obj-$(CONFIG_ARCH_OMAP4)		+= clockdomains44xx_data.o

obj-$(CONFIG_SOC_AM33XX)		+= $(clockdomain-common)

obj-$(CONFIG_SOC_AM33XX)		+= clockdomains33xx_data.o

obj-$(CONFIG_SOC_TI81XX)		+= $(clockdomain-common)

obj-$(CONFIG_SOC_TI81XX)		+= clockdomains81xx_data.o

obj-$(CONFIG_SOC_AM43XX)		+= $(clockdomain-common)

obj-$(CONFIG_SOC_AM43XX)		+= clockdomains43xx_data.o

obj-$(CONFIG_SOC_OMAP5)			+= $(clockdomain-common)

arch/arm/mach-omap2/clockdomain.h

+1 −0
Original line number Diff line number Diff line
@@ -216,6 +216,7 @@ extern void __init omap242x_clockdomains_init(void); 
extern void __init omap243x_clockdomains_init(void);

extern void __init omap3xxx_clockdomains_init(void);

extern void __init am33xx_clockdomains_init(void);

extern void __init ti81xx_clockdomains_init(void);

extern void __init omap44xx_clockdomains_init(void);

extern void __init omap54xx_clockdomains_init(void);

extern void __init dra7xx_clockdomains_init(void);

arch/arm/mach-omap2/clockdomains81xx_data.c

0 → 100644
+194 −0
Original line number Diff line number Diff line 
/*

 * TI81XX Clock Domain data.

 *

 * Copyright (C) 2010 Texas Instruments, Inc. - http://www.ti.com/

 * Copyright (C) 2013 SKTB SKiT, http://www.skitlab.ru/

 *

 * 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 version 2.

 *

 * This program is distributed "as is" WITHOUT ANY WARRANTY of any

 * kind, whether express or implied; without even the implied warranty

 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 */



#ifndef __ARCH_ARM_MACH_OMAP2_CLOCKDOMAINS_81XX_H

#define __ARCH_ARM_MACH_OMAP2_CLOCKDOMAINS_81XX_H



#include <linux/kernel.h>

#include <linux/io.h>



#include "clockdomain.h"

#include "cm81xx.h"



/*

 * Note that 814x seems to have HWSUP_SWSUP for many clockdomains

 * while 816x does not. According to the TRM, 816x only has HWSUP

 * for ALWON_L3_FAST. Also note that the TI tree clockdomains81xx.h

 * seems to have the related ifdef the wrong way around claiming

 * 816x supports HWSUP while 814x does not. For now, we only set

 * HWSUP for ALWON_L3_FAST as that seems to be supported for both

 * dm814x and dm816x.

 */



/* Common for 81xx */



static struct clockdomain alwon_l3_slow_81xx_clkdm = {

	.name		= "alwon_l3s_clkdm",

	.pwrdm		= { .name = "alwon_pwrdm" },

	.cm_inst	= TI81XX_CM_ALWON_MOD,

	.clkdm_offs	= TI81XX_CM_ALWON_L3_SLOW_CLKDM,

	.flags		= CLKDM_CAN_SWSUP,

};



static struct clockdomain alwon_l3_med_81xx_clkdm = {

	.name		= "alwon_l3_med_clkdm",

	.pwrdm		= { .name = "alwon_pwrdm" },

	.cm_inst	= TI81XX_CM_ALWON_MOD,

	.clkdm_offs	= TI81XX_CM_ALWON_L3_MED_CLKDM,

	.flags		= CLKDM_CAN_SWSUP,

};



static struct clockdomain alwon_l3_fast_81xx_clkdm = {

	.name		= "alwon_l3_fast_clkdm",

	.pwrdm		= { .name = "alwon_pwrdm" },

	.cm_inst	= TI81XX_CM_ALWON_MOD,

	.clkdm_offs	= TI81XX_CM_ALWON_L3_FAST_CLKDM,

	.flags		= CLKDM_CAN_HWSUP_SWSUP,

};



static struct clockdomain alwon_ethernet_81xx_clkdm = {

	.name		= "alwon_ethernet_clkdm",

	.pwrdm		= { .name = "alwon_pwrdm" },

	.cm_inst	= TI81XX_CM_ALWON_MOD,

	.clkdm_offs	= TI81XX_CM_ETHERNET_CLKDM,

	.flags		= CLKDM_CAN_SWSUP,

};



static struct clockdomain mmu_81xx_clkdm = {

	.name		= "mmu_clkdm",

	.pwrdm		= { .name = "alwon_pwrdm" },

	.cm_inst	= TI81XX_CM_ALWON_MOD,

	.clkdm_offs	= TI81XX_CM_MMU_CLKDM,

	.flags		= CLKDM_CAN_SWSUP,

};



static struct clockdomain mmu_cfg_81xx_clkdm = {

	.name		= "mmu_cfg_clkdm",

	.pwrdm		= { .name = "alwon_pwrdm" },

	.cm_inst	= TI81XX_CM_ALWON_MOD,

	.clkdm_offs	= TI81XX_CM_MMUCFG_CLKDM,

	.flags		= CLKDM_CAN_SWSUP,

};



/* 816x only */



static struct clockdomain alwon_mpu_816x_clkdm = {

	.name		= "alwon_mpu_clkdm",

	.pwrdm		= { .name = "alwon_pwrdm" },

	.cm_inst	= TI81XX_CM_ALWON_MOD,

	.clkdm_offs	= TI81XX_CM_ALWON_MPU_CLKDM,

	.flags		= CLKDM_CAN_SWSUP,

};



static struct clockdomain active_gem_816x_clkdm = {

	.name		= "active_gem_clkdm",

	.pwrdm		= { .name = "active_pwrdm" },

	.cm_inst	= TI816X_CM_ACTIVE_MOD,

	.clkdm_offs	= TI816X_CM_ACTIVE_GEM_CLKDM,

	.flags		= CLKDM_CAN_SWSUP,

};



static struct clockdomain ivahd0_816x_clkdm = {

	.name		= "ivahd0_clkdm",

	.pwrdm		= { .name = "ivahd0_pwrdm" },

	.cm_inst	= TI816X_CM_IVAHD0_MOD,

	.clkdm_offs	= TI816X_CM_IVAHD0_CLKDM,

	.flags		= CLKDM_CAN_SWSUP,

};



static struct clockdomain ivahd1_816x_clkdm = {

	.name		= "ivahd1_clkdm",

	.pwrdm		= { .name = "ivahd1_pwrdm" },

	.cm_inst	= TI816X_CM_IVAHD1_MOD,

	.clkdm_offs	= TI816X_CM_IVAHD1_CLKDM,

	.flags		= CLKDM_CAN_SWSUP,

};



static struct clockdomain ivahd2_816x_clkdm = {

	.name		= "ivahd2_clkdm",

	.pwrdm		= { .name = "ivahd2_pwrdm" },

	.cm_inst	= TI816X_CM_IVAHD2_MOD,

	.clkdm_offs	= TI816X_CM_IVAHD2_CLKDM,

	.flags		= CLKDM_CAN_SWSUP,

};



static struct clockdomain sgx_816x_clkdm = {

	.name		= "sgx_clkdm",

	.pwrdm		= { .name = "sgx_pwrdm" },

	.cm_inst	= TI816X_CM_SGX_MOD,

	.clkdm_offs	= TI816X_CM_SGX_CLKDM,

	.flags		= CLKDM_CAN_SWSUP,

};



static struct clockdomain default_l3_med_816x_clkdm = {

	.name		= "default_l3_med_clkdm",

	.pwrdm		= { .name = "default_pwrdm" },

	.cm_inst	= TI816X_CM_DEFAULT_MOD,

	.clkdm_offs	= TI816X_CM_DEFAULT_L3_MED_CLKDM,

	.flags		= CLKDM_CAN_SWSUP,

};



static struct clockdomain default_ducati_816x_clkdm = {

	.name		= "default_ducati_clkdm",

	.pwrdm		= { .name = "default_pwrdm" },

	.cm_inst	= TI816X_CM_DEFAULT_MOD,

	.clkdm_offs	= TI816X_CM_DEFAULT_DUCATI_CLKDM,

	.flags		= CLKDM_CAN_SWSUP,

};



static struct clockdomain default_pci_816x_clkdm = {

	.name		= "default_pci_clkdm",

	.pwrdm		= { .name = "default_pwrdm" },

	.cm_inst	= TI816X_CM_DEFAULT_MOD,

	.clkdm_offs	= TI816X_CM_DEFAULT_PCI_CLKDM,

	.flags		= CLKDM_CAN_SWSUP,

};



static struct clockdomain default_l3_slow_816x_clkdm = {

	.name		= "default_l3_slow_clkdm",

	.pwrdm		= { .name = "default_pwrdm" },

	.cm_inst	= TI816X_CM_DEFAULT_MOD,

	.clkdm_offs	= TI816X_CM_DEFAULT_L3_SLOW_CLKDM,

	.flags		= CLKDM_CAN_SWSUP,

};



static struct clockdomain *clockdomains_ti81xx[] __initdata = {

	&alwon_mpu_816x_clkdm,

	&alwon_l3_slow_81xx_clkdm,

	&alwon_l3_med_81xx_clkdm,

	&alwon_l3_fast_81xx_clkdm,

	&alwon_ethernet_81xx_clkdm,

	&mmu_81xx_clkdm,

	&mmu_cfg_81xx_clkdm,

	&active_gem_816x_clkdm,

	&ivahd0_816x_clkdm,

	&ivahd1_816x_clkdm,

	&ivahd2_816x_clkdm,

	&sgx_816x_clkdm,

	&default_l3_med_816x_clkdm,

	&default_ducati_816x_clkdm,

	&default_pci_816x_clkdm,

	&default_l3_slow_816x_clkdm,

	NULL,

};



void __init ti81xx_clockdomains_init(void)

{

	clkdm_register_platform_funcs(&am33xx_clkdm_operations);

	clkdm_register_clkdms(clockdomains_ti81xx);

	clkdm_complete_init();

}

#endif

arch/arm/mach-omap2/cm81xx.h

0 → 100644
+61 −0
Original line number Diff line number Diff line 
/*

 * Clock domain register offsets for TI81XX.

 *

 * Copyright (C) 2010 Texas Instruments, Inc. - http://www.ti.com/

 * Copyright (C) 2013 SKTB SKiT, http://www.skitlab.ru/

 *

 * 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 version 2.

 *

 * This program is distributed "as is" WITHOUT ANY WARRANTY of any

 * kind, whether express or implied; without even the implied warranty

 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 */



#ifndef __ARCH_ARM_MACH_OMAP2_CM_TI81XX_H

#define __ARCH_ARM_MACH_OMAP2_CM_TI81XX_H



/* TI81XX common CM module offsets */

#define TI81XX_CM_ALWON_MOD			0x1400	/* 1KB */



/* TI816X CM module offsets */

#define TI816X_CM_ACTIVE_MOD			0x0400	/* 256B */

#define TI816X_CM_DEFAULT_MOD			0x0500	/* 256B */

#define TI816X_CM_IVAHD0_MOD			0x0600	/* 256B */

#define TI816X_CM_IVAHD1_MOD			0x0700	/* 256B */

#define TI816X_CM_IVAHD2_MOD			0x0800	/* 256B */

#define TI816X_CM_SGX_MOD			0x0900	/* 256B */



/* ALWON */

#define TI81XX_CM_ALWON_L3_SLOW_CLKDM		0x0000

#define TI81XX_CM_ALWON_L3_MED_CLKDM		0x0004

#define TI81XX_CM_ETHERNET_CLKDM		0x0004

#define TI81XX_CM_MMU_CLKDM			0x000C

#define TI81XX_CM_MMUCFG_CLKDM			0x0010

#define TI81XX_CM_ALWON_MPU_CLKDM		0x001C

#define TI81XX_CM_ALWON_L3_FAST_CLKDM		0x0030



/* ACTIVE */

#define TI816X_CM_ACTIVE_GEM_CLKDM		0x0000



/* IVAHD0 */

#define TI816X_CM_IVAHD0_CLKDM			0x0000



/* IVAHD1 */

#define TI816X_CM_IVAHD1_CLKDM			0x0000



/* IVAHD2 */

#define TI816X_CM_IVAHD2_CLKDM			0x0000



/* SGX */

#define TI816X_CM_SGX_CLKDM			0x0000



/* DEFAULT */

#define TI816X_CM_DEFAULT_L3_MED_CLKDM		0x0004

#define TI816X_CM_DEFAULT_PCI_CLKDM		0x0010

#define TI816X_CM_DEFAULT_L3_SLOW_CLKDM		0x0014

#define TI816X_CM_DEFAULT_DUCATI_CLKDM		0x0018



#endif

arch/arm/mach-omap2/io.c

+40 −38
Original line number Diff line number Diff line
@@ -492,44 +492,6 @@ void __init am35xx_init_early(void) 
		omap_clk_soc_init = am35xx_dt_clk_init;

}



void __init ti814x_init_early(void)

{

	omap2_set_globals_tap(TI814X_CLASS,

			      OMAP2_L4_IO_ADDRESS(TI81XX_TAP_BASE));

	omap2_set_globals_control(OMAP2_L4_IO_ADDRESS(TI81XX_CTRL_BASE),

				  NULL);

	omap2_set_globals_prm(OMAP2_L4_IO_ADDRESS(TI81XX_PRCM_BASE));

	omap2_set_globals_cm(OMAP2_L4_IO_ADDRESS(TI81XX_PRCM_BASE), NULL);

	omap3xxx_check_revision();

	ti81xx_check_features();

	omap3xxx_voltagedomains_init();

	omap3xxx_powerdomains_init();

	omap3xxx_clockdomains_init();

	omap3xxx_hwmod_init();

	omap_hwmod_init_postsetup();

	if (of_have_populated_dt())

		omap_clk_soc_init = ti81xx_dt_clk_init;

}



void __init ti816x_init_early(void)

{

	omap2_set_globals_tap(TI816X_CLASS,

			      OMAP2_L4_IO_ADDRESS(TI81XX_TAP_BASE));

	omap2_set_globals_control(OMAP2_L4_IO_ADDRESS(TI81XX_CTRL_BASE),

				  NULL);

	omap2_set_globals_prm(OMAP2_L4_IO_ADDRESS(TI81XX_PRCM_BASE));

	omap2_set_globals_cm(OMAP2_L4_IO_ADDRESS(TI81XX_PRCM_BASE), NULL);

	omap3xxx_check_revision();

	ti81xx_check_features();

	omap3xxx_voltagedomains_init();

	omap3xxx_powerdomains_init();

	omap3xxx_clockdomains_init();

	omap3xxx_hwmod_init();

	omap_hwmod_init_postsetup();

	if (of_have_populated_dt())

		omap_clk_soc_init = ti81xx_dt_clk_init;

}



void __init omap3_init_late(void)

{

	omap_common_late_init();
@@ -572,6 +534,46 @@ void __init ti81xx_init_late(void) 
}

#endif



#ifdef CONFIG_SOC_TI81XX

void __init ti814x_init_early(void)

{

	omap2_set_globals_tap(TI814X_CLASS,

			      OMAP2_L4_IO_ADDRESS(TI81XX_TAP_BASE));

	omap2_set_globals_control(OMAP2_L4_IO_ADDRESS(TI81XX_CTRL_BASE),

				  NULL);

	omap2_set_globals_prm(OMAP2_L4_IO_ADDRESS(TI81XX_PRCM_BASE));

	omap2_set_globals_cm(OMAP2_L4_IO_ADDRESS(TI81XX_PRCM_BASE), NULL);

	omap3xxx_check_revision();

	ti81xx_check_features();

	omap3xxx_voltagedomains_init();

	omap3xxx_powerdomains_init();

	ti81xx_clockdomains_init();

	omap3xxx_hwmod_init();

	omap_hwmod_init_postsetup();

	if (of_have_populated_dt())

		omap_clk_soc_init = ti81xx_dt_clk_init;

}



void __init ti816x_init_early(void)

{

	omap2_set_globals_tap(TI816X_CLASS,

			      OMAP2_L4_IO_ADDRESS(TI81XX_TAP_BASE));

	omap2_set_globals_control(OMAP2_L4_IO_ADDRESS(TI81XX_CTRL_BASE),

				  NULL);

	omap2_set_globals_prm(OMAP2_L4_IO_ADDRESS(TI81XX_PRCM_BASE));

	omap2_set_globals_cm(OMAP2_L4_IO_ADDRESS(TI81XX_PRCM_BASE), NULL);

	omap3xxx_check_revision();

	ti81xx_check_features();

	omap3xxx_voltagedomains_init();

	omap3xxx_powerdomains_init();

	ti81xx_clockdomains_init();

	omap3xxx_hwmod_init();

	omap_hwmod_init_postsetup();

	if (of_have_populated_dt())

		omap_clk_soc_init = ti81xx_dt_clk_init;

}

#endif



#ifdef CONFIG_SOC_AM33XX

void __init am33xx_init_early(void)

{

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