diff options
author | Arnd Bergmann <arnd@arndb.de> | 2013-04-09 16:31:43 +0200 |
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committer | Arnd Bergmann <arnd@arndb.de> | 2013-04-09 16:31:43 +0200 |
commit | 3be1812ea3b7193ee1a3993cadf9a7985121cf16 (patch) | |
tree | 4aed605da38588bae8544dccdf6f81004d02ee0b /arch/arm | |
parent | 759417ac74fedf74af9c1c1510a9e4e15b951239 (diff) | |
parent | 6affb4826405dc1f53bae0e5c302a18f734a44ca (diff) | |
download | op-kernel-dev-3be1812ea3b7193ee1a3993cadf9a7985121cf16.zip op-kernel-dev-3be1812ea3b7193ee1a3993cadf9a7985121cf16.tar.gz |
Merge branch 'tegra/cleanup' into next/soc
This is a dependency for the tegra/soc branch.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arm')
29 files changed, 264 insertions, 311 deletions
diff --git a/arch/arm/boot/dts/tegra114.dtsi b/arch/arm/boot/dts/tegra114.dtsi index 1dfaf28..e4ddedd 100644 --- a/arch/arm/boot/dts/tegra114.dtsi +++ b/arch/arm/boot/dts/tegra114.dtsi @@ -99,7 +99,7 @@ }; pmc { - compatible = "nvidia,tegra114-pmc", "nvidia,tegra30-pmc"; + compatible = "nvidia,tegra114-pmc"; reg = <0x7000e400 0x400>; }; diff --git a/arch/arm/boot/dts/tegra20-colibri-512.dtsi b/arch/arm/boot/dts/tegra20-colibri-512.dtsi index 4441620..cb73e62 100644 --- a/arch/arm/boot/dts/tegra20-colibri-512.dtsi +++ b/arch/arm/boot/dts/tegra20-colibri-512.dtsi @@ -444,7 +444,7 @@ }; sdhci@c8000600 { - cd-gpios = <&gpio 23 0>; /* gpio PC7 */ + cd-gpios = <&gpio 23 1>; /* gpio PC7 */ }; sound { diff --git a/arch/arm/boot/dts/tegra20-harmony.dts b/arch/arm/boot/dts/tegra20-harmony.dts index 61d027f..1f79c0d 100644 --- a/arch/arm/boot/dts/tegra20-harmony.dts +++ b/arch/arm/boot/dts/tegra20-harmony.dts @@ -437,7 +437,7 @@ sdhci@c8000200 { status = "okay"; - cd-gpios = <&gpio 69 0>; /* gpio PI5 */ + cd-gpios = <&gpio 69 1>; /* gpio PI5 */ wp-gpios = <&gpio 57 0>; /* gpio PH1 */ power-gpios = <&gpio 155 0>; /* gpio PT3 */ bus-width = <4>; @@ -445,7 +445,7 @@ sdhci@c8000600 { status = "okay"; - cd-gpios = <&gpio 58 0>; /* gpio PH2 */ + cd-gpios = <&gpio 58 1>; /* gpio PH2 */ wp-gpios = <&gpio 59 0>; /* gpio PH3 */ power-gpios = <&gpio 70 0>; /* gpio PI6 */ bus-width = <8>; diff --git a/arch/arm/boot/dts/tegra20-paz00.dts b/arch/arm/boot/dts/tegra20-paz00.dts index 54d6fce..9db36da 100644 --- a/arch/arm/boot/dts/tegra20-paz00.dts +++ b/arch/arm/boot/dts/tegra20-paz00.dts @@ -436,7 +436,7 @@ sdhci@c8000000 { status = "okay"; - cd-gpios = <&gpio 173 0>; /* gpio PV5 */ + cd-gpios = <&gpio 173 1>; /* gpio PV5 */ wp-gpios = <&gpio 57 0>; /* gpio PH1 */ power-gpios = <&gpio 169 0>; /* gpio PV1 */ bus-width = <4>; diff --git a/arch/arm/boot/dts/tegra20-seaboard.dts b/arch/arm/boot/dts/tegra20-seaboard.dts index 37b3a57..715a8b8 100644 --- a/arch/arm/boot/dts/tegra20-seaboard.dts +++ b/arch/arm/boot/dts/tegra20-seaboard.dts @@ -584,7 +584,7 @@ sdhci@c8000400 { status = "okay"; - cd-gpios = <&gpio 69 0>; /* gpio PI5 */ + cd-gpios = <&gpio 69 1>; /* gpio PI5 */ wp-gpios = <&gpio 57 0>; /* gpio PH1 */ power-gpios = <&gpio 70 0>; /* gpio PI6 */ bus-width = <4>; diff --git a/arch/arm/boot/dts/tegra20-tamonten.dtsi b/arch/arm/boot/dts/tegra20-tamonten.dtsi index 4766aba..6e9d91f 100644 --- a/arch/arm/boot/dts/tegra20-tamonten.dtsi +++ b/arch/arm/boot/dts/tegra20-tamonten.dtsi @@ -465,7 +465,7 @@ }; sdhci@c8000600 { - cd-gpios = <&gpio 58 0>; /* gpio PH2 */ + cd-gpios = <&gpio 58 1>; /* gpio PH2 */ wp-gpios = <&gpio 59 0>; /* gpio PH3 */ bus-width = <4>; status = "okay"; diff --git a/arch/arm/boot/dts/tegra20-trimslice.dts b/arch/arm/boot/dts/tegra20-trimslice.dts index 5d79e4f..98f3e44 100644 --- a/arch/arm/boot/dts/tegra20-trimslice.dts +++ b/arch/arm/boot/dts/tegra20-trimslice.dts @@ -325,7 +325,7 @@ sdhci@c8000600 { status = "okay"; - cd-gpios = <&gpio 121 0>; /* gpio PP1 */ + cd-gpios = <&gpio 121 1>; /* gpio PP1 */ wp-gpios = <&gpio 122 0>; /* gpio PP2 */ bus-width = <4>; }; diff --git a/arch/arm/boot/dts/tegra20-ventana.dts b/arch/arm/boot/dts/tegra20-ventana.dts index 425c890..4aef56f 100644 --- a/arch/arm/boot/dts/tegra20-ventana.dts +++ b/arch/arm/boot/dts/tegra20-ventana.dts @@ -520,7 +520,7 @@ sdhci@c8000400 { status = "okay"; - cd-gpios = <&gpio 69 0>; /* gpio PI5 */ + cd-gpios = <&gpio 69 1>; /* gpio PI5 */ wp-gpios = <&gpio 57 0>; /* gpio PH1 */ power-gpios = <&gpio 70 0>; /* gpio PI6 */ bus-width = <4>; diff --git a/arch/arm/boot/dts/tegra20-whistler.dts b/arch/arm/boot/dts/tegra20-whistler.dts index ea57c0f..5762188 100644 --- a/arch/arm/boot/dts/tegra20-whistler.dts +++ b/arch/arm/boot/dts/tegra20-whistler.dts @@ -510,6 +510,7 @@ sdhci@c8000400 { status = "okay"; + cd-gpios = <&gpio 69 1>; /* gpio PI5 */ wp-gpios = <&gpio 173 0>; /* gpio PV5 */ bus-width = <8>; }; diff --git a/arch/arm/boot/dts/tegra20.dtsi b/arch/arm/boot/dts/tegra20.dtsi index 3d3f64d..ad64c8c 100644 --- a/arch/arm/boot/dts/tegra20.dtsi +++ b/arch/arm/boot/dts/tegra20.dtsi @@ -145,6 +145,7 @@ 0 1 0x04 0 41 0x04 0 42 0x04>; + clocks = <&tegra_car 5>; }; tegra_car: clock { @@ -304,6 +305,7 @@ compatible = "nvidia,tegra20-rtc"; reg = <0x7000e000 0x100>; interrupts = <0 2 0x04>; + clocks = <&tegra_car 4>; }; i2c@7000c000 { diff --git a/arch/arm/boot/dts/tegra30-beaver.dts b/arch/arm/boot/dts/tegra30-beaver.dts index 8ff2ff2..0a2cd24 100644 --- a/arch/arm/boot/dts/tegra30-beaver.dts +++ b/arch/arm/boot/dts/tegra30-beaver.dts @@ -257,7 +257,7 @@ sdhci@78000000 { status = "okay"; - cd-gpios = <&gpio 69 0>; /* gpio PI5 */ + cd-gpios = <&gpio 69 1>; /* gpio PI5 */ wp-gpios = <&gpio 155 0>; /* gpio PT3 */ power-gpios = <&gpio 31 0>; /* gpio PD7 */ bus-width = <4>; diff --git a/arch/arm/boot/dts/tegra30-cardhu.dtsi b/arch/arm/boot/dts/tegra30-cardhu.dtsi index 1749927..3e2d210 100644 --- a/arch/arm/boot/dts/tegra30-cardhu.dtsi +++ b/arch/arm/boot/dts/tegra30-cardhu.dtsi @@ -311,7 +311,7 @@ sdhci@78000000 { status = "okay"; - cd-gpios = <&gpio 69 0>; /* gpio PI5 */ + cd-gpios = <&gpio 69 1>; /* gpio PI5 */ wp-gpios = <&gpio 155 0>; /* gpio PT3 */ power-gpios = <&gpio 31 0>; /* gpio PD7 */ bus-width = <4>; diff --git a/arch/arm/boot/dts/tegra30.dtsi b/arch/arm/boot/dts/tegra30.dtsi index dbf46c2..9491edf 100644 --- a/arch/arm/boot/dts/tegra30.dtsi +++ b/arch/arm/boot/dts/tegra30.dtsi @@ -148,6 +148,7 @@ 0 42 0x04 0 121 0x04 0 122 0x04>; + clocks = <&tegra_car 5>; }; tegra_car: clock { @@ -291,6 +292,7 @@ compatible = "nvidia,tegra30-rtc", "nvidia,tegra20-rtc"; reg = <0x7000e000 0x100>; interrupts = <0 2 0x04>; + clocks = <&tegra_car 4>; }; i2c@7000c000 { @@ -423,7 +425,7 @@ }; pmc { - compatible = "nvidia,tegra20-pmc", "nvidia,tegra30-pmc"; + compatible = "nvidia,tegra30-pmc"; reg = <0x7000e400 0x400>; }; diff --git a/arch/arm/mach-tegra/Makefile b/arch/arm/mach-tegra/Makefile index f6b46ae..92703f9 100644 --- a/arch/arm/mach-tegra/Makefile +++ b/arch/arm/mach-tegra/Makefile @@ -10,6 +10,7 @@ obj-y += pm.o obj-y += reset.o obj-y += reset-handler.o obj-y += sleep.o +obj-y += tegra.o obj-$(CONFIG_CPU_IDLE) += cpuidle.o obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += tegra20_speedo.o obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += tegra2_emc.o @@ -27,9 +28,6 @@ obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o obj-$(CONFIG_CPU_FREQ) += cpu-tegra.o obj-$(CONFIG_TEGRA_PCI) += pcie.o -obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += board-dt-tegra20.o -obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += board-dt-tegra30.o -obj-$(CONFIG_ARCH_TEGRA_114_SOC) += board-dt-tegra114.o ifeq ($(CONFIG_CPU_IDLE),y) obj-$(CONFIG_ARCH_TEGRA_114_SOC) += cpuidle-tegra114.o endif diff --git a/arch/arm/mach-tegra/board-dt-tegra114.c b/arch/arm/mach-tegra/board-dt-tegra114.c deleted file mode 100644 index 085d636..0000000 --- a/arch/arm/mach-tegra/board-dt-tegra114.c +++ /dev/null @@ -1,46 +0,0 @@ -/* - * NVIDIA Tegra114 device tree board support - * - * Copyright (C) 2013 NVIDIA Corporation - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * 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 <linux/of.h> -#include <linux/of_platform.h> -#include <linux/clocksource.h> - -#include <asm/mach/arch.h> - -#include "board.h" -#include "common.h" - -static void __init tegra114_dt_init(void) -{ - of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); -} - -static const char * const tegra114_dt_board_compat[] = { - "nvidia,tegra114", - NULL, -}; - -DT_MACHINE_START(TEGRA114_DT, "NVIDIA Tegra114 (Flattened Device Tree)") - .smp = smp_ops(tegra_smp_ops), - .map_io = tegra_map_common_io, - .init_early = tegra114_init_early, - .init_irq = tegra_dt_init_irq, - .init_time = clocksource_of_init, - .init_machine = tegra114_dt_init, - .init_late = tegra_init_late, - .restart = tegra_assert_system_reset, - .dt_compat = tegra114_dt_board_compat, -MACHINE_END diff --git a/arch/arm/mach-tegra/board-dt-tegra30.c b/arch/arm/mach-tegra/board-dt-tegra30.c deleted file mode 100644 index bf68567..0000000 --- a/arch/arm/mach-tegra/board-dt-tegra30.c +++ /dev/null @@ -1,60 +0,0 @@ -/* - * arch/arm/mach-tegra/board-dt-tegra30.c - * - * NVIDIA Tegra30 device tree board support - * - * Copyright (C) 2011 NVIDIA Corporation - * - * Derived from: - * - * arch/arm/mach-tegra/board-dt-tegra20.c - * - * Copyright (C) 2010 Secret Lab Technologies, Ltd. - * Copyright (C) 2010 Google, Inc. - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * 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 <linux/clocksource.h> -#include <linux/kernel.h> -#include <linux/of.h> -#include <linux/of_address.h> -#include <linux/of_fdt.h> -#include <linux/of_irq.h> -#include <linux/of_platform.h> - -#include <asm/mach/arch.h> - -#include "board.h" -#include "common.h" -#include "iomap.h" - -static void __init tegra30_dt_init(void) -{ - of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); -} - -static const char *tegra30_dt_board_compat[] = { - "nvidia,tegra30", - NULL -}; - -DT_MACHINE_START(TEGRA30_DT, "NVIDIA Tegra30 (Flattened Device Tree)") - .smp = smp_ops(tegra_smp_ops), - .map_io = tegra_map_common_io, - .init_early = tegra30_init_early, - .init_irq = tegra_dt_init_irq, - .init_time = clocksource_of_init, - .init_machine = tegra30_dt_init, - .init_late = tegra_init_late, - .restart = tegra_assert_system_reset, - .dt_compat = tegra30_dt_board_compat, -MACHINE_END diff --git a/arch/arm/mach-tegra/board-harmony-pcie.c b/arch/arm/mach-tegra/board-harmony-pcie.c index 3cdc1bb..d195db0 100644 --- a/arch/arm/mach-tegra/board-harmony-pcie.c +++ b/arch/arm/mach-tegra/board-harmony-pcie.c @@ -62,7 +62,11 @@ int __init harmony_pcie_init(void) goto err_reg; } - regulator_enable(regulator); + err = regulator_enable(regulator); + if (err) { + pr_err("%s: regulator_enable failed: %d\n", __func__, err); + goto err_en; + } err = tegra_pcie_init(true, true); if (err) { @@ -74,6 +78,7 @@ int __init harmony_pcie_init(void) err_pcie: regulator_disable(regulator); +err_en: regulator_put(regulator); err_reg: gpio_free(en_vdd_1v05); diff --git a/arch/arm/mach-tegra/board.h b/arch/arm/mach-tegra/board.h index 86851c8..60431de 100644 --- a/arch/arm/mach-tegra/board.h +++ b/arch/arm/mach-tegra/board.h @@ -26,9 +26,7 @@ void tegra_assert_system_reset(char mode, const char *cmd); -void __init tegra20_init_early(void); -void __init tegra30_init_early(void); -void __init tegra114_init_early(void); +void __init tegra_init_early(void); void __init tegra_map_common_io(void); void __init tegra_init_irq(void); void __init tegra_dt_init_irq(void); diff --git a/arch/arm/mach-tegra/common.c b/arch/arm/mach-tegra/common.c index 5449a3f..f0315c9 100644 --- a/arch/arm/mach-tegra/common.c +++ b/arch/arm/mach-tegra/common.c @@ -94,7 +94,7 @@ static void __init tegra_init_cache(void) } -static void __init tegra_init_early(void) +void __init tegra_init_early(void) { tegra_cpu_reset_handler_init(); tegra_apb_io_init(); @@ -102,31 +102,9 @@ static void __init tegra_init_early(void) tegra_init_cache(); tegra_pmc_init(); tegra_powergate_init(); + tegra_hotplug_init(); } -#ifdef CONFIG_ARCH_TEGRA_2x_SOC -void __init tegra20_init_early(void) -{ - tegra_init_early(); - tegra20_hotplug_init(); -} -#endif - -#ifdef CONFIG_ARCH_TEGRA_3x_SOC -void __init tegra30_init_early(void) -{ - tegra_init_early(); - tegra30_hotplug_init(); -} -#endif - -#ifdef CONFIG_ARCH_TEGRA_114_SOC -void __init tegra114_init_early(void) -{ - tegra_init_early(); -} -#endif - void __init tegra_init_late(void) { tegra_powergate_debugfs_init(); diff --git a/arch/arm/mach-tegra/cpuidle-tegra30.c b/arch/arm/mach-tegra/cpuidle-tegra30.c index 8b50cf4..80445ed 100644 --- a/arch/arm/mach-tegra/cpuidle-tegra30.c +++ b/arch/arm/mach-tegra/cpuidle-tegra30.c @@ -102,12 +102,8 @@ static bool tegra30_cpu_core_power_down(struct cpuidle_device *dev, smp_wmb(); - save_cpu_arch_register(); - cpu_suspend(0, tegra30_sleep_cpu_secondary_finish); - restore_cpu_arch_register(); - clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_EXIT, &dev->cpu); return true; diff --git a/arch/arm/mach-tegra/headsmp.S b/arch/arm/mach-tegra/headsmp.S index fd473f2..045c16f 100644 --- a/arch/arm/mach-tegra/headsmp.S +++ b/arch/arm/mach-tegra/headsmp.S @@ -7,8 +7,5 @@ ENTRY(tegra_secondary_startup) bl v7_invalidate_l1 - /* Enable coresight */ - mov32 r0, 0xC5ACCE55 - mcr p14, 0, r0, c7, c12, 6 b secondary_startup ENDPROC(tegra_secondary_startup) diff --git a/arch/arm/mach-tegra/hotplug.c b/arch/arm/mach-tegra/hotplug.c index a599f6e..8da9f78 100644 --- a/arch/arm/mach-tegra/hotplug.c +++ b/arch/arm/mach-tegra/hotplug.c @@ -1,8 +1,7 @@ /* - * * Copyright (C) 2002 ARM Ltd. * All Rights Reserved - * Copyright (c) 2010, 2012 NVIDIA Corporation. All rights reserved. + * Copyright (c) 2010, 2012-2013, NVIDIA Corporation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as @@ -15,6 +14,7 @@ #include <asm/cacheflush.h> #include <asm/smp_plat.h> +#include "fuse.h" #include "sleep.h" static void (*tegra_hotplug_shutdown)(void); @@ -56,18 +56,13 @@ int tegra_cpu_disable(unsigned int cpu) return cpu == 0 ? -EPERM : 0; } -#ifdef CONFIG_ARCH_TEGRA_2x_SOC -extern void tegra20_hotplug_shutdown(void); -void __init tegra20_hotplug_init(void) +void __init tegra_hotplug_init(void) { - tegra_hotplug_shutdown = tegra20_hotplug_shutdown; -} -#endif + if (!IS_ENABLED(CONFIG_HOTPLUG_CPU)) + return; -#ifdef CONFIG_ARCH_TEGRA_3x_SOC -extern void tegra30_hotplug_shutdown(void); -void __init tegra30_hotplug_init(void) -{ - tegra_hotplug_shutdown = tegra30_hotplug_shutdown; + if (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC) && tegra_chip_id == TEGRA20) + tegra_hotplug_shutdown = tegra20_hotplug_shutdown; + if (IS_ENABLED(CONFIG_ARCH_TEGRA_3x_SOC) && tegra_chip_id == TEGRA30) + tegra_hotplug_shutdown = tegra30_hotplug_shutdown; } -#endif diff --git a/arch/arm/mach-tegra/platsmp.c b/arch/arm/mach-tegra/platsmp.c index 2c6b3d5..601bd0c 100644 --- a/arch/arm/mach-tegra/platsmp.c +++ b/arch/arm/mach-tegra/platsmp.c @@ -26,22 +26,16 @@ #include <asm/smp_scu.h> #include <asm/smp_plat.h> -#include <mach/powergate.h> - #include "fuse.h" #include "flowctrl.h" #include "reset.h" +#include "pmc.h" #include "common.h" #include "iomap.h" -extern void tegra_secondary_startup(void); - static cpumask_t tegra_cpu_init_mask; -#define EVP_CPU_RESET_VECTOR \ - (IO_ADDRESS(TEGRA_EXCEPTION_VECTORS_BASE) + 0x100) - static void __cpuinit tegra_secondary_init(unsigned int cpu) { /* @@ -54,25 +48,43 @@ static void __cpuinit tegra_secondary_init(unsigned int cpu) cpumask_set_cpu(cpu, &tegra_cpu_init_mask); } -static int tegra20_power_up_cpu(unsigned int cpu) + +static int tegra20_boot_secondary(unsigned int cpu, struct task_struct *idle) { - /* Enable the CPU clock. */ - tegra_enable_cpu_clock(cpu); + cpu = cpu_logical_map(cpu); + + /* + * Force the CPU into reset. The CPU must remain in reset when + * the flow controller state is cleared (which will cause the + * flow controller to stop driving reset if the CPU has been + * power-gated via the flow controller). This will have no + * effect on first boot of the CPU since it should already be + * in reset. + */ + tegra_put_cpu_in_reset(cpu); - /* Clear flow controller CSR. */ - flowctrl_write_cpu_csr(cpu, 0); + /* + * Unhalt the CPU. If the flow controller was used to + * power-gate the CPU this will cause the flow controller to + * stop driving reset. The CPU will remain in reset because the + * clock and reset block is now driving reset. + */ + flowctrl_write_cpu_halt(cpu, 0); + tegra_enable_cpu_clock(cpu); + flowctrl_write_cpu_csr(cpu, 0); /* Clear flow controller CSR. */ + tegra_cpu_out_of_reset(cpu); return 0; } -static int tegra30_power_up_cpu(unsigned int cpu) +static int tegra30_boot_secondary(unsigned int cpu, struct task_struct *idle) { - int ret, pwrgateid; + int ret; unsigned long timeout; - pwrgateid = tegra_cpu_powergate_id(cpu); - if (pwrgateid < 0) - return pwrgateid; + cpu = cpu_logical_map(cpu); + tegra_put_cpu_in_reset(cpu); + flowctrl_write_cpu_halt(cpu, 0); /* * The power up sequence of cold boot CPU and warm boot CPU @@ -85,13 +97,13 @@ static int tegra30_power_up_cpu(unsigned int cpu) * the IO clamps. * For cold boot CPU, do not wait. After the cold boot CPU be * booted, it will run to tegra_secondary_init() and set - * tegra_cpu_init_mask which influences what tegra30_power_up_cpu() + * tegra_cpu_init_mask which influences what tegra30_boot_secondary() * next time around. */ if (cpumask_test_cpu(cpu, &tegra_cpu_init_mask)) { timeout = jiffies + msecs_to_jiffies(50); do { - if (!tegra_powergate_is_powered(pwrgateid)) + if (tegra_pmc_cpu_is_powered(cpu)) goto remove_clamps; udelay(10); } while (time_before(jiffies, timeout)); @@ -103,14 +115,14 @@ static int tegra30_power_up_cpu(unsigned int cpu) * be un-gated by un-toggling the power gate register * manually. */ - if (!tegra_powergate_is_powered(pwrgateid)) { - ret = tegra_powergate_power_on(pwrgateid); + if (!tegra_pmc_cpu_is_powered(cpu)) { + ret = tegra_pmc_cpu_power_on(cpu); if (ret) return ret; /* Wait for the power to come up. */ timeout = jiffies + msecs_to_jiffies(100); - while (tegra_powergate_is_powered(pwrgateid)) { + while (tegra_pmc_cpu_is_powered(cpu)) { if (time_after(jiffies, timeout)) return -ETIMEDOUT; udelay(10); @@ -123,57 +135,26 @@ remove_clamps: udelay(10); /* Remove I/O clamps. */ - ret = tegra_powergate_remove_clamping(pwrgateid); - udelay(10); + ret = tegra_pmc_cpu_remove_clamping(cpu); + if (ret) + return ret; - /* Clear flow controller CSR. */ - flowctrl_write_cpu_csr(cpu, 0); + udelay(10); + flowctrl_write_cpu_csr(cpu, 0); /* Clear flow controller CSR. */ + tegra_cpu_out_of_reset(cpu); return 0; } -static int __cpuinit tegra_boot_secondary(unsigned int cpu, struct task_struct *idle) +static int __cpuinit tegra_boot_secondary(unsigned int cpu, + struct task_struct *idle) { - int status; - - cpu = cpu_logical_map(cpu); - - /* - * Force the CPU into reset. The CPU must remain in reset when the - * flow controller state is cleared (which will cause the flow - * controller to stop driving reset if the CPU has been power-gated - * via the flow controller). This will have no effect on first boot - * of the CPU since it should already be in reset. - */ - tegra_put_cpu_in_reset(cpu); + if (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC) && tegra_chip_id == TEGRA20) + return tegra20_boot_secondary(cpu, idle); + if (IS_ENABLED(CONFIG_ARCH_TEGRA_3x_SOC) && tegra_chip_id == TEGRA30) + return tegra30_boot_secondary(cpu, idle); - /* - * Unhalt the CPU. If the flow controller was used to power-gate the - * CPU this will cause the flow controller to stop driving reset. - * The CPU will remain in reset because the clock and reset block - * is now driving reset. - */ - flowctrl_write_cpu_halt(cpu, 0); - - switch (tegra_chip_id) { - case TEGRA20: - status = tegra20_power_up_cpu(cpu); - break; - case TEGRA30: - status = tegra30_power_up_cpu(cpu); - break; - default: - status = -EINVAL; - break; - } - - if (status) - goto done; - - /* Take the CPU out of reset. */ - tegra_cpu_out_of_reset(cpu); -done: - return status; + return -EINVAL; } static void __init tegra_smp_prepare_cpus(unsigned int max_cpus) diff --git a/arch/arm/mach-tegra/pm.c b/arch/arm/mach-tegra/pm.c index 523604d..acacbe8 100644 --- a/arch/arm/mach-tegra/pm.c +++ b/arch/arm/mach-tegra/pm.c @@ -46,26 +46,11 @@ #define PMC_CPUPWROFF_TIMER 0xcc #ifdef CONFIG_PM_SLEEP -static unsigned int g_diag_reg; static DEFINE_SPINLOCK(tegra_lp2_lock); static void __iomem *pmc = IO_ADDRESS(TEGRA_PMC_BASE); static struct clk *tegra_pclk; void (*tegra_tear_down_cpu)(void); -void save_cpu_arch_register(void) -{ - /* read diagnostic register */ - asm("mrc p15, 0, %0, c15, c0, 1" : "=r"(g_diag_reg) : : "cc"); - return; -} - -void restore_cpu_arch_register(void) -{ - /* write diagnostic register */ - asm("mcr p15, 0, %0, c15, c0, 1" : : "r"(g_diag_reg) : "cc"); - return; -} - static void set_power_timers(unsigned long us_on, unsigned long us_off) { unsigned long long ticks; @@ -119,8 +104,6 @@ static void restore_cpu_complex(void) tegra_cpu_clock_resume(); flowctrl_cpu_suspend_exit(cpu); - - restore_cpu_arch_register(); } /* @@ -145,8 +128,6 @@ static void suspend_cpu_complex(void) tegra_cpu_clock_suspend(); flowctrl_cpu_suspend_enter(cpu); - - save_cpu_arch_register(); } void tegra_clear_cpu_in_lp2(int phy_cpu_id) @@ -183,12 +164,7 @@ bool tegra_set_cpu_in_lp2(int phy_cpu_id) static int tegra_sleep_cpu(unsigned long v2p) { - /* Switch to the identity mapping. */ - cpu_switch_mm(idmap_pgd, &init_mm); - - /* Flush the TLB. */ - local_flush_tlb_all(); - + setup_mm_for_reboot(); tegra_sleep_cpu_finish(v2p); /* should never here */ diff --git a/arch/arm/mach-tegra/pmc.c b/arch/arm/mach-tegra/pmc.c index d4fdb5f..b30e921 100644 --- a/arch/arm/mach-tegra/pmc.c +++ b/arch/arm/mach-tegra/pmc.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2012 NVIDIA CORPORATION. All rights reserved. + * Copyright (C) 2012,2013 NVIDIA CORPORATION. All rights reserved. * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, @@ -18,57 +18,149 @@ #include <linux/kernel.h> #include <linux/io.h> #include <linux/of.h> +#include <linux/of_address.h> -#include "iomap.h" +#define PMC_CTRL 0x0 +#define PMC_CTRL_INTR_LOW (1 << 17) +#define PMC_PWRGATE_TOGGLE 0x30 +#define PMC_PWRGATE_TOGGLE_START (1 << 8) +#define PMC_REMOVE_CLAMPING 0x34 +#define PMC_PWRGATE_STATUS 0x38 -#define PMC_CTRL 0x0 -#define PMC_CTRL_INTR_LOW (1 << 17) +#define TEGRA_POWERGATE_PCIE 3 +#define TEGRA_POWERGATE_VDEC 4 +#define TEGRA_POWERGATE_CPU1 9 +#define TEGRA_POWERGATE_CPU2 10 +#define TEGRA_POWERGATE_CPU3 11 + +static u8 tegra_cpu_domains[] = { + 0xFF, /* not available for CPU0 */ + TEGRA_POWERGATE_CPU1, + TEGRA_POWERGATE_CPU2, + TEGRA_POWERGATE_CPU3, +}; +static DEFINE_SPINLOCK(tegra_powergate_lock); + +static void __iomem *tegra_pmc_base; +static bool tegra_pmc_invert_interrupt; static inline u32 tegra_pmc_readl(u32 reg) { - return readl(IO_ADDRESS(TEGRA_PMC_BASE + reg)); + return readl(tegra_pmc_base + reg); } static inline void tegra_pmc_writel(u32 val, u32 reg) { - writel(val, IO_ADDRESS(TEGRA_PMC_BASE + reg)); + writel(val, tegra_pmc_base + reg); +} + +static int tegra_pmc_get_cpu_powerdomain_id(int cpuid) +{ + if (cpuid <= 0 || cpuid >= num_possible_cpus()) + return -EINVAL; + return tegra_cpu_domains[cpuid]; +} + +static bool tegra_pmc_powergate_is_powered(int id) +{ + return (tegra_pmc_readl(PMC_PWRGATE_STATUS) >> id) & 1; +} + +static int tegra_pmc_powergate_set(int id, bool new_state) +{ + bool old_state; + unsigned long flags; + + spin_lock_irqsave(&tegra_powergate_lock, flags); + + old_state = tegra_pmc_powergate_is_powered(id); + WARN_ON(old_state == new_state); + + tegra_pmc_writel(PMC_PWRGATE_TOGGLE_START | id, PMC_PWRGATE_TOGGLE); + + spin_unlock_irqrestore(&tegra_powergate_lock, flags); + + return 0; +} + +static int tegra_pmc_powergate_remove_clamping(int id) +{ + u32 mask; + + /* + * Tegra has a bug where PCIE and VDE clamping masks are + * swapped relatively to the partition ids. + */ + if (id == TEGRA_POWERGATE_VDEC) + mask = (1 << TEGRA_POWERGATE_PCIE); + else if (id == TEGRA_POWERGATE_PCIE) + mask = (1 << TEGRA_POWERGATE_VDEC); + else + mask = (1 << id); + + tegra_pmc_writel(mask, PMC_REMOVE_CLAMPING); + + return 0; +} + +bool tegra_pmc_cpu_is_powered(int cpuid) +{ + int id; + + id = tegra_pmc_get_cpu_powerdomain_id(cpuid); + if (id < 0) + return false; + return tegra_pmc_powergate_is_powered(id); +} + +int tegra_pmc_cpu_power_on(int cpuid) +{ + int id; + + id = tegra_pmc_get_cpu_powerdomain_id(cpuid); + if (id < 0) + return id; + return tegra_pmc_powergate_set(id, true); +} + +int tegra_pmc_cpu_remove_clamping(int cpuid) +{ + int id; + + id = tegra_pmc_get_cpu_powerdomain_id(cpuid); + if (id < 0) + return id; + return tegra_pmc_powergate_remove_clamping(id); } -#ifdef CONFIG_OF static const struct of_device_id matches[] __initconst = { + { .compatible = "nvidia,tegra114-pmc" }, + { .compatible = "nvidia,tegra30-pmc" }, { .compatible = "nvidia,tegra20-pmc" }, { } }; -#endif -void __init tegra_pmc_init(void) +static void tegra_pmc_parse_dt(void) { - /* - * For now, Harmony is the only board that uses the PMC, and it wants - * the signal inverted. Seaboard would too if it used the PMC. - * Hopefully by the time other boards want to use the PMC, everything - * will be device-tree, or they also want it inverted. - */ - bool invert_interrupt = true; - u32 val; + struct device_node *np; -#ifdef CONFIG_OF - if (of_have_populated_dt()) { - struct device_node *np; + np = of_find_matching_node(NULL, matches); + BUG_ON(!np); - invert_interrupt = false; + tegra_pmc_base = of_iomap(np, 0); + + tegra_pmc_invert_interrupt = of_property_read_bool(np, + "nvidia,invert-interrupt"); +} + +void __init tegra_pmc_init(void) +{ + u32 val; - np = of_find_matching_node(NULL, matches); - if (np) { - if (of_find_property(np, "nvidia,invert-interrupt", - NULL)) - invert_interrupt = true; - } - } -#endif + tegra_pmc_parse_dt(); val = tegra_pmc_readl(PMC_CTRL); - if (invert_interrupt) + if (tegra_pmc_invert_interrupt) val |= PMC_CTRL_INTR_LOW; else val &= ~PMC_CTRL_INTR_LOW; diff --git a/arch/arm/mach-tegra/pmc.h b/arch/arm/mach-tegra/pmc.h index 8995ee4..7d44710 100644 --- a/arch/arm/mach-tegra/pmc.h +++ b/arch/arm/mach-tegra/pmc.h @@ -18,6 +18,10 @@ #ifndef __MACH_TEGRA_PMC_H #define __MACH_TEGRA_PMC_H +bool tegra_pmc_cpu_is_powered(int cpuid); +int tegra_pmc_cpu_power_on(int cpuid); +int tegra_pmc_cpu_remove_clamping(int cpuid); + void tegra_pmc_init(void); #endif diff --git a/arch/arm/mach-tegra/reset-handler.S b/arch/arm/mach-tegra/reset-handler.S index 54382ce..1676aba5e7 100644 --- a/arch/arm/mach-tegra/reset-handler.S +++ b/arch/arm/mach-tegra/reset-handler.S @@ -41,9 +41,6 @@ */ ENTRY(tegra_resume) bl v7_invalidate_l1 - /* Enable coresight */ - mov32 r0, 0xC5ACCE55 - mcr p14, 0, r0, c7, c12, 6 cpu_id r0 cmp r0, #0 @ CPU0? @@ -99,6 +96,8 @@ ENTRY(__tegra_cpu_reset_handler_start) * * Register usage within the reset handler: * + * Others: scratch + * R6 = SoC ID << 8 * R7 = CPU present (to the OS) mask * R8 = CPU in LP1 state mask * R9 = CPU in LP2 state mask @@ -114,6 +113,40 @@ ENTRY(__tegra_cpu_reset_handler_start) ENTRY(__tegra_cpu_reset_handler) cpsid aif, 0x13 @ SVC mode, interrupts disabled + + mov32 r6, TEGRA_APB_MISC_BASE + ldr r6, [r6, #APB_MISC_GP_HIDREV] + and r6, r6, #0xff00 +#ifdef CONFIG_ARCH_TEGRA_2x_SOC +t20_check: + cmp r6, #(0x20 << 8) + bne after_t20_check +t20_errata: + # Tegra20 is a Cortex-A9 r1p1 + mrc p15, 0, r0, c1, c0, 0 @ read system control register + orr r0, r0, #1 << 14 @ erratum 716044 + mcr p15, 0, r0, c1, c0, 0 @ write system control register + mrc p15, 0, r0, c15, c0, 1 @ read diagnostic register + orr r0, r0, #1 << 4 @ erratum 742230 + orr r0, r0, #1 << 11 @ erratum 751472 + mcr p15, 0, r0, c15, c0, 1 @ write diagnostic register + b after_errata +after_t20_check: +#endif +#ifdef CONFIG_ARCH_TEGRA_3x_SOC +t30_check: + cmp r6, #(0x30 << 8) + bne after_t30_check +t30_errata: + # Tegra30 is a Cortex-A9 r2p9 + mrc p15, 0, r0, c15, c0, 1 @ read diagnostic register + orr r0, r0, #1 << 6 @ erratum 743622 + orr r0, r0, #1 << 11 @ erratum 751472 + mcr p15, 0, r0, c15, c0, 1 @ write diagnostic register + b after_errata +after_t30_check: +#endif +after_errata: mrc p15, 0, r10, c0, c0, 5 @ MPIDR and r10, r10, #0x3 @ R10 = CPU number mov r11, #1 @@ -129,16 +162,13 @@ ENTRY(__tegra_cpu_reset_handler) #ifdef CONFIG_ARCH_TEGRA_2x_SOC /* Are we on Tegra20? */ - mov32 r6, TEGRA_APB_MISC_BASE - ldr r0, [r6, #APB_MISC_GP_HIDREV] - and r0, r0, #0xff00 - cmp r0, #(0x20 << 8) + cmp r6, #(0x20 << 8) bne 1f /* If not CPU0, don't let CPU0 reset CPU1 now that CPU1 is coming up. */ - mov32 r6, TEGRA_PMC_BASE + mov32 r5, TEGRA_PMC_BASE mov r0, #0 cmp r10, #0 - strne r0, [r6, #PMC_SCRATCH41] + strne r0, [r5, #PMC_SCRATCH41] 1: #endif diff --git a/arch/arm/mach-tegra/sleep.h b/arch/arm/mach-tegra/sleep.h index 4ffae54..970ebd5 100644 --- a/arch/arm/mach-tegra/sleep.h +++ b/arch/arm/mach-tegra/sleep.h @@ -1,5 +1,5 @@ /* - * Copyright (c) 2010-2012, NVIDIA Corporation. All rights reserved. + * Copyright (c) 2010-2013, NVIDIA Corporation. All rights reserved. * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, @@ -124,11 +124,11 @@ int tegra_sleep_cpu_finish(unsigned long); void tegra_disable_clean_inv_dcache(void); #ifdef CONFIG_HOTPLUG_CPU -void tegra20_hotplug_init(void); -void tegra30_hotplug_init(void); +void tegra20_hotplug_shutdown(void); +void tegra30_hotplug_shutdown(void); +void tegra_hotplug_init(void); #else -static inline void tegra20_hotplug_init(void) {} -static inline void tegra30_hotplug_init(void) {} +static inline void tegra_hotplug_init(void) {} #endif void tegra20_cpu_shutdown(int cpu); diff --git a/arch/arm/mach-tegra/board-dt-tegra20.c b/arch/arm/mach-tegra/tegra.c index a0edf25..27232c9 100644 --- a/arch/arm/mach-tegra/board-dt-tegra20.c +++ b/arch/arm/mach-tegra/tegra.c @@ -1,6 +1,7 @@ /* - * nVidia Tegra device tree board support + * NVIDIA Tegra SoC device tree board support * + * Copyright (C) 2011, 2013, NVIDIA Corporation * Copyright (C) 2010 Secret Lab Technologies, Ltd. * Copyright (C) 2010 Google, Inc. * @@ -111,7 +112,8 @@ static void __init harmony_init(void) static void __init paz00_init(void) { - tegra_paz00_wifikill_init(); + if (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC)) + tegra_paz00_wifikill_init(); } static struct { @@ -137,19 +139,21 @@ static void __init tegra_dt_init_late(void) } } -static const char *tegra20_dt_board_compat[] = { +static const char * const tegra_dt_board_compat[] = { + "nvidia,tegra114", + "nvidia,tegra30", "nvidia,tegra20", NULL }; -DT_MACHINE_START(TEGRA_DT, "nVidia Tegra20 (Flattened Device Tree)") +DT_MACHINE_START(TEGRA_DT, "NVIDIA Tegra SoC (Flattened Device Tree)") .map_io = tegra_map_common_io, .smp = smp_ops(tegra_smp_ops), - .init_early = tegra20_init_early, + .init_early = tegra_init_early, .init_irq = tegra_dt_init_irq, .init_time = clocksource_of_init, .init_machine = tegra_dt_init, .init_late = tegra_dt_init_late, .restart = tegra_assert_system_reset, - .dt_compat = tegra20_dt_board_compat, + .dt_compat = tegra_dt_board_compat, MACHINE_END |