[PATCH 1/2] ARM: OMAP2+: Add clock domain support for dm816x
Tony Lindgren
tony at atomide.com
Tue Jan 13 15:22:34 PST 2015
From: Aida Mynzhasova <aida.mynzhasova at skitlab.ru>
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.
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 at gmail.com>
Cc: Paul Walmsley <paul at pwsan.com>
Signed-off-by: Aida Mynzhasova <aida.mynzhasova at skitlab.ru>
[tony at atomide.com: updated to apply, renamed to clockdomains81xx.c
fixed to use am33xx_clkdm_operations]
Signed-off-by: Tony Lindgren <tony at atomide.com>
---
arch/arm/mach-omap2/Makefile | 2 +
arch/arm/mach-omap2/clockdomain.h | 1 +
arch/arm/mach-omap2/clockdomains81xx_data.c | 191 ++++++++++++++++++++++++++++
arch/arm/mach-omap2/cm81xx.h | 61 +++++++++
arch/arm/mach-omap2/io.c | 4 +-
5 files changed, 257 insertions(+), 2 deletions(-)
create mode 100644 arch/arm/mach-omap2/clockdomains81xx_data.c
create mode 100644 arch/arm/mach-omap2/cm81xx.h
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 3a6463f..352873c 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -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)
diff --git a/arch/arm/mach-omap2/clockdomain.h b/arch/arm/mach-omap2/clockdomain.h
index 82c37b1..77bab5f 100644
--- a/arch/arm/mach-omap2/clockdomain.h
+++ b/arch/arm/mach-omap2/clockdomain.h
@@ -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);
diff --git a/arch/arm/mach-omap2/clockdomains81xx_data.c b/arch/arm/mach-omap2/clockdomains81xx_data.c
new file mode 100644
index 0000000..05c4635
--- /dev/null
+++ b/arch/arm/mach-omap2/clockdomains81xx_data.c
@@ -0,0 +1,191 @@
+/*
+ * 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"
+
+/*
+ * - Add other domains as required
+ * - Fill up associated powerdomans (especially ALWON powerdomains are NULL at
+ * the moment
+ * - Consider dependencies across domains (probably not applicable till now)
+ */
+
+/* Common TI81XX */
+static struct clockdomain alwon_l3_slow_81xx_clkdm = {
+ .name = "l3s_clkdm",
+ .pwrdm = { .name = "alwon_pwrdm" },
+ .cm_inst = TI81XX_CM_ALWON_MOD,
+ .clkdm_offs = TI81XX_CM_ALWON_L3_SLOW_CLKDM,
+ .flags = CLKDM_CAN_HWSUP_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_HWSUP_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_HWSUP_SWSUP,
+};
+
+/* OCMC clock domain */
+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_HWSUP_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_HWSUP_SWSUP,
+};
+
+/* TI816X 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_HWSUP_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_HWSUP_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_HWSUP_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_HWSUP_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_HWSUP_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_HWSUP_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_HWSUP_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_HWSUP_SWSUP,
+};
+
+static struct clockdomain default_pcie_816x_clkdm = {
+ .name = "default_pcie_clkdm",
+ .pwrdm = { .name = "default_pwrdm" },
+ .cm_inst = TI816X_CM_DEFAULT_MOD,
+ .clkdm_offs = TI816X_CM_DEFAULT_PCI_CLKDM,
+ .flags = CLKDM_CAN_HWSUP_SWSUP,
+};
+
+static struct clockdomain default_usb_816x_clkdm = {
+ .name = "default_usb_clkdm",
+ .pwrdm = { .name = "default_pwrdm" },
+ .cm_inst = TI816X_CM_DEFAULT_MOD,
+ .clkdm_offs = TI816X_CM_DEFAULT_L3_SLOW_CLKDM,
+ .flags = CLKDM_CAN_HWSUP_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_pcie_816x_clkdm,
+ &default_usb_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
diff --git a/arch/arm/mach-omap2/cm81xx.h b/arch/arm/mach-omap2/cm81xx.h
new file mode 100644
index 0000000..8d82ddc
--- /dev/null
+++ b/arch/arm/mach-omap2/cm81xx.h
@@ -0,0 +1,61 @@
+/*
+ * 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_MPU_CLKDM 0x001C
+#define TI81XX_CM_ALWON_L3_SLOW_CLKDM 0x0000
+#define TI81XX_CM_ALWON_L3_MED_CLKDM 0x0004
+#define TI81XX_CM_ALWON_L3_FAST_CLKDM 0x0030
+#define TI81XX_CM_ETHERNET_CLKDM 0x0004
+#define TI81XX_CM_MMU_CLKDM 0x000C
+#define TI81XX_CM_MMUCFG_CLKDM 0x0010
+
+/* 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_DUCATI_CLKDM 0x0018
+#define TI816X_CM_DEFAULT_PCI_CLKDM 0x0010
+#define TI816X_CM_DEFAULT_L3_SLOW_CLKDM 0x0014
+
+#endif
diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c
index e4a5630..ccf238c 100644
--- a/arch/arm/mach-omap2/io.c
+++ b/arch/arm/mach-omap2/io.c
@@ -504,7 +504,7 @@ void __init ti814x_init_early(void)
ti81xx_check_features();
omap3xxx_voltagedomains_init();
omap3xxx_powerdomains_init();
- omap3xxx_clockdomains_init();
+ ti81xx_clockdomains_init();
omap3xxx_hwmod_init();
omap_hwmod_init_postsetup();
if (of_have_populated_dt())
@@ -523,7 +523,7 @@ void __init ti816x_init_early(void)
ti81xx_check_features();
omap3xxx_voltagedomains_init();
omap3xxx_powerdomains_init();
- omap3xxx_clockdomains_init();
+ ti81xx_clockdomains_init();
omap3xxx_hwmod_init();
omap_hwmod_init_postsetup();
if (of_have_populated_dt())
--
2.1.4
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