diff options
author | Arnd Bergmann <arnd@arndb.de> | 2013-04-09 16:40:45 +0200 |
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committer | Arnd Bergmann <arnd@arndb.de> | 2013-04-09 16:40:45 +0200 |
commit | b8250dc4192c6adab0b9a713a11bf19afc462c96 (patch) | |
tree | 830299d0edad314367e075012ef9ca841a3026d1 /arch/arm/mach-omap2 | |
parent | 56734ee2835caaf62168c28281403b61b5826841 (diff) | |
parent | 7a9819950f47dbf319895ee78220f2761f3687a3 (diff) | |
download | talos-op-linux-b8250dc4192c6adab0b9a713a11bf19afc462c96.tar.gz talos-op-linux-b8250dc4192c6adab0b9a713a11bf19afc462c96.zip |
Merge tag 'omap-for-v3.10/soc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/soc
From Tony Lindgren <tony@atomide.com>:
Changes needed for enabling SOC_BUS for the SoC revision
information. Also enable few HW errata workarounds for omap4.
* tag 'omap-for-v3.10/soc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (236 commits)
ARM: OMAP4: Enable fix for Cortex-A9 erratas
ARM: OMAP2+: Export SoC information to userspace
ARM: OMAP2+: SoC name and revision unification
ARM: OMAP2+: Move common part of late init into common function
Includes an update to Linux 3.9-rc6
Conflicts:
arch/arm/mach-omap2/cclock44xx_data.c
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arm/mach-omap2')
-rw-r--r-- | arch/arm/mach-omap2/Kconfig | 3 | ||||
-rw-r--r-- | arch/arm/mach-omap2/cclock44xx_data.c | 20 | ||||
-rw-r--r-- | arch/arm/mach-omap2/common.h | 11 | ||||
-rw-r--r-- | arch/arm/mach-omap2/id.c | 95 | ||||
-rw-r--r-- | arch/arm/mach-omap2/io.c | 52 | ||||
-rw-r--r-- | arch/arm/mach-omap2/omap_hwmod.c | 7 | ||||
-rw-r--r-- | arch/arm/mach-omap2/omap_hwmod.h | 9 | ||||
-rw-r--r-- | arch/arm/mach-omap2/omap_hwmod_3xxx_data.c | 7 | ||||
-rw-r--r-- | arch/arm/mach-omap2/omap_hwmod_44xx_data.c | 6 | ||||
-rw-r--r-- | arch/arm/mach-omap2/timer.c | 4 |
10 files changed, 177 insertions, 37 deletions
diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig index 8111cd9ff3e5..b56530cb5fa8 100644 --- a/arch/arm/mach-omap2/Kconfig +++ b/arch/arm/mach-omap2/Kconfig @@ -15,6 +15,7 @@ config ARCH_OMAP2PLUS select OMAP_DM_TIMER select PINCTRL select PROC_DEVICETREE if PROC_FS + select SOC_BUS select SPARSE_IRQ select USE_OF help @@ -96,6 +97,8 @@ config ARCH_OMAP4 select PM_RUNTIME if CPU_IDLE select USB_ARCH_HAS_EHCI if USB_SUPPORT select COMMON_CLK + select ARM_ERRATA_754322 + select ARM_ERRATA_775420 config SOC_OMAP5 bool "TI OMAP5" diff --git a/arch/arm/mach-omap2/cclock44xx_data.c b/arch/arm/mach-omap2/cclock44xx_data.c index b1e77ef968fa..88e37a474334 100644 --- a/arch/arm/mach-omap2/cclock44xx_data.c +++ b/arch/arm/mach-omap2/cclock44xx_data.c @@ -52,6 +52,13 @@ */ #define OMAP4_DPLL_ABE_DEFFREQ 98304000 +/* + * OMAP4 USB DPLL default frequency. In OMAP4430 TRM version V, section + * "3.6.3.9.5 DPLL_USB Preferred Settings" shows that the preferred + * locked frequency for the USB DPLL is 960MHz. + */ +#define OMAP4_DPLL_USB_DEFFREQ 960000000 + /* Root clocks */ DEFINE_CLK_FIXED_RATE(extalt_clkin_ck, CLK_IS_ROOT, 59000000, 0x0); @@ -1011,6 +1018,10 @@ DEFINE_CLK_OMAP_MUX(hsmmc2_fclk, "l3_init_clkdm", hsmmc1_fclk_sel, OMAP4430_CM_L3INIT_MMC2_CLKCTRL, OMAP4430_CLKSEL_MASK, hsmmc1_fclk_parents, func_dmic_abe_gfclk_ops); +DEFINE_CLK_GATE(ocp2scp_usb_phy_phy_48m, "func_48m_fclk", &func_48m_fclk, 0x0, + OMAP4430_CM_L3INIT_USBPHYOCP2SCP_CLKCTRL, + OMAP4430_OPTFCLKEN_PHY_48M_SHIFT, 0x0, NULL); + DEFINE_CLK_GATE(sha2md5_fck, "l3_div_ck", &l3_div_ck, 0x0, OMAP4430_CM_L4SEC_SHA2MD51_CLKCTRL, OMAP4430_MODULEMODE_SWCTRL_SHIFT, 0x0, NULL); @@ -1549,6 +1560,7 @@ static struct omap_clk omap44xx_clks[] = { CLK(NULL, "per_mcbsp4_gfclk", &per_mcbsp4_gfclk), CLK(NULL, "hsmmc1_fclk", &hsmmc1_fclk), CLK(NULL, "hsmmc2_fclk", &hsmmc2_fclk), + CLK(NULL, "ocp2scp_usb_phy_phy_48m", &ocp2scp_usb_phy_phy_48m), CLK(NULL, "sha2md5_fck", &sha2md5_fck), CLK(NULL, "slimbus1_fclk_1", &slimbus1_fclk_1), CLK(NULL, "slimbus1_fclk_0", &slimbus1_fclk_0), @@ -1706,5 +1718,13 @@ int __init omap4xxx_clk_init(void) if (rc) pr_err("%s: failed to configure ABE DPLL!\n", __func__); + /* + * Lock USB DPLL on OMAP4 devices so that the L3INIT power + * domain can transition to retention state when not in use. + */ + rc = clk_set_rate(&dpll_usb_ck, OMAP4_DPLL_USB_DEFFREQ); + if (rc) + pr_err("%s: failed to configure USB DPLL!\n", __func__); + return 0; } diff --git a/arch/arm/mach-omap2/common.h b/arch/arm/mach-omap2/common.h index 40f4a03d728f..1ddd0cb5fab9 100644 --- a/arch/arm/mach-omap2/common.h +++ b/arch/arm/mach-omap2/common.h @@ -110,6 +110,14 @@ void am35xx_init_late(void); void ti81xx_init_late(void); int omap2_common_pm_late_init(void); +#ifdef CONFIG_SOC_BUS +void omap_soc_device_init(void); +#else +static inline void omap_soc_device_init(void) +{ +} +#endif + #if defined(CONFIG_SOC_OMAP2420) || defined(CONFIG_SOC_OMAP2430) void omap2xxx_restart(char mode, const char *cmd); #else @@ -293,5 +301,8 @@ extern void omap_reserve(void); struct omap_hwmod; extern int omap_dss_reset(struct omap_hwmod *); +/* SoC specific clock initializer */ +extern int (*omap_clk_init)(void); + #endif /* __ASSEMBLER__ */ #endif /* __ARCH_ARM_MACH_OMAP2PLUS_COMMON_H */ diff --git a/arch/arm/mach-omap2/id.c b/arch/arm/mach-omap2/id.c index 8a68f1ec66b9..098e94e31336 100644 --- a/arch/arm/mach-omap2/id.c +++ b/arch/arm/mach-omap2/id.c @@ -18,6 +18,11 @@ #include <linux/kernel.h> #include <linux/init.h> #include <linux/io.h> +#include <linux/slab.h> + +#ifdef CONFIG_SOC_BUS +#include <linux/sys_soc.h> +#endif #include <asm/cputype.h> @@ -31,8 +36,11 @@ #define OMAP4_SILICON_TYPE_STANDARD 0x01 #define OMAP4_SILICON_TYPE_PERFORMANCE 0x02 +#define OMAP_SOC_MAX_NAME_LENGTH 16 + static unsigned int omap_revision; -static const char *cpu_rev; +static char soc_name[OMAP_SOC_MAX_NAME_LENGTH]; +static char soc_rev[OMAP_SOC_MAX_NAME_LENGTH]; u32 omap_features; unsigned int omap_rev(void) @@ -169,9 +177,12 @@ void __init omap2xxx_check_revision(void) j = i; } - pr_info("OMAP%04x", omap_rev() >> 16); + sprintf(soc_name, "OMAP%04x", omap_rev() >> 16); + sprintf(soc_rev, "ES%x", (omap_rev() >> 12) & 0xf); + + pr_info("%s", soc_name); if ((omap_rev() >> 8) & 0x0f) - pr_info("ES%x", (omap_rev() >> 12) & 0xf); + pr_info("%s", soc_rev); pr_info("\n"); } @@ -211,8 +222,10 @@ static void __init omap3_cpuinfo(void) cpu_name = "OMAP3503"; } + sprintf(soc_name, "%s", cpu_name); + /* Print verbose information */ - pr_info("%s ES%s (", cpu_name, cpu_rev); + pr_info("%s %s (", soc_name, soc_rev); OMAP3_SHOW_FEATURE(l2cache); OMAP3_SHOW_FEATURE(iva); @@ -291,6 +304,7 @@ void __init ti81xx_check_features(void) void __init omap3xxx_check_revision(void) { + const char *cpu_rev; u32 cpuid, idcode; u16 hawkeye; u8 rev; @@ -438,6 +452,7 @@ void __init omap3xxx_check_revision(void) cpu_rev = "1.2"; pr_warn("Warning: unknown chip type; assuming OMAP3630ES1.2\n"); } + sprintf(soc_rev, "ES%s", cpu_rev); } void __init omap4xxx_check_revision(void) @@ -512,8 +527,10 @@ void __init omap4xxx_check_revision(void) omap_revision = OMAP4430_REV_ES2_3; } - pr_info("OMAP%04x ES%d.%d\n", omap_rev() >> 16, - ((omap_rev() >> 12) & 0xf), ((omap_rev() >> 8) & 0xf)); + sprintf(soc_name, "OMAP%04x", omap_rev() >> 16); + sprintf(soc_rev, "ES%d.%d", (omap_rev() >> 12) & 0xf, + (omap_rev() >> 8) & 0xf); + pr_info("%s %s\n", soc_name, soc_rev); } void __init omap5xxx_check_revision(void) @@ -547,8 +564,10 @@ void __init omap5xxx_check_revision(void) omap_revision = OMAP5430_REV_ES1_0; } - pr_info("OMAP%04x ES%d.0\n", - omap_rev() >> 16, ((omap_rev() >> 12) & 0xf)); + sprintf(soc_name, "OMAP%04x", omap_rev() >> 16); + sprintf(soc_rev, "ES%d.0", (omap_rev() >> 12) & 0xf); + + pr_info("%s %s\n", soc_name, soc_rev); } /* @@ -569,3 +588,63 @@ void __init omap2_set_globals_tap(u32 class, void __iomem *tap) else tap_prod_id = 0x0208; } + +#ifdef CONFIG_SOC_BUS + +static const char const *omap_types[] = { + [OMAP2_DEVICE_TYPE_TEST] = "TST", + [OMAP2_DEVICE_TYPE_EMU] = "EMU", + [OMAP2_DEVICE_TYPE_SEC] = "HS", + [OMAP2_DEVICE_TYPE_GP] = "GP", + [OMAP2_DEVICE_TYPE_BAD] = "BAD", +}; + +static const char * __init omap_get_family(void) +{ + if (cpu_is_omap24xx()) + return kasprintf(GFP_KERNEL, "OMAP2"); + else if (cpu_is_omap34xx()) + return kasprintf(GFP_KERNEL, "OMAP3"); + else if (cpu_is_omap44xx()) + return kasprintf(GFP_KERNEL, "OMAP4"); + else if (soc_is_omap54xx()) + return kasprintf(GFP_KERNEL, "OMAP5"); + else + return kasprintf(GFP_KERNEL, "Unknown"); +} + +static ssize_t omap_get_type(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + return sprintf(buf, "%s\n", omap_types[omap_type()]); +} + +static struct device_attribute omap_soc_attr = + __ATTR(type, S_IRUGO, omap_get_type, NULL); + +void __init omap_soc_device_init(void) +{ + struct device *parent; + struct soc_device *soc_dev; + struct soc_device_attribute *soc_dev_attr; + + soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL); + if (!soc_dev_attr) + return; + + soc_dev_attr->machine = soc_name; + soc_dev_attr->family = omap_get_family(); + soc_dev_attr->revision = soc_rev; + + soc_dev = soc_device_register(soc_dev_attr); + if (IS_ERR_OR_NULL(soc_dev)) { + kfree(soc_dev_attr); + return; + } + + parent = soc_device_to_device(soc_dev); + if (!IS_ERR_OR_NULL(parent)) + device_create_file(parent, &omap_soc_attr); +} +#endif /* CONFIG_SOC_BUS */ diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c index 2c3fdd65387b..3241f23afe09 100644 --- a/arch/arm/mach-omap2/io.c +++ b/arch/arm/mach-omap2/io.c @@ -55,6 +55,12 @@ #include "prm44xx.h" /* + * omap_clk_init: points to a function that does the SoC-specific + * clock initializations + */ +int (*omap_clk_init)(void); + +/* * The machine specific code may provide the extra mapping besides the * default mapping provided here. */ @@ -379,6 +385,13 @@ static void __init omap_hwmod_init_postsetup(void) omap_pm_if_early_init(); } +static void __init omap_common_late_init(void) +{ + omap_mux_late_init(); + omap2_common_pm_late_init(); + omap_soc_device_init(); +} + #ifdef CONFIG_SOC_OMAP2420 void __init omap2420_init_early(void) { @@ -397,13 +410,12 @@ void __init omap2420_init_early(void) omap242x_clockdomains_init(); omap2420_hwmod_init(); omap_hwmod_init_postsetup(); - omap2420_clk_init(); + omap_clk_init = omap2420_clk_init; } void __init omap2420_init_late(void) { - omap_mux_late_init(); - omap2_common_pm_late_init(); + omap_common_late_init(); omap2_pm_init(); omap2_clk_enable_autoidle_all(); } @@ -427,13 +439,12 @@ void __init omap2430_init_early(void) omap243x_clockdomains_init(); omap2430_hwmod_init(); omap_hwmod_init_postsetup(); - omap2430_clk_init(); + omap_clk_init = omap2430_clk_init; } void __init omap2430_init_late(void) { - omap_mux_late_init(); - omap2_common_pm_late_init(); + omap_common_late_init(); omap2_pm_init(); omap2_clk_enable_autoidle_all(); } @@ -462,7 +473,7 @@ void __init omap3_init_early(void) omap3xxx_clockdomains_init(); omap3xxx_hwmod_init(); omap_hwmod_init_postsetup(); - omap3xxx_clk_init(); + omap_clk_init = omap3xxx_clk_init; } void __init omap3430_init_early(void) @@ -500,53 +511,47 @@ void __init ti81xx_init_early(void) omap3xxx_clockdomains_init(); omap3xxx_hwmod_init(); omap_hwmod_init_postsetup(); - omap3xxx_clk_init(); + omap_clk_init = omap3xxx_clk_init; } void __init omap3_init_late(void) { - omap_mux_late_init(); - omap2_common_pm_late_init(); + omap_common_late_init(); omap3_pm_init(); omap2_clk_enable_autoidle_all(); } void __init omap3430_init_late(void) { - omap_mux_late_init(); - omap2_common_pm_late_init(); + omap_common_late_init(); omap3_pm_init(); omap2_clk_enable_autoidle_all(); } void __init omap35xx_init_late(void) { - omap_mux_late_init(); - omap2_common_pm_late_init(); + omap_common_late_init(); omap3_pm_init(); omap2_clk_enable_autoidle_all(); } void __init omap3630_init_late(void) { - omap_mux_late_init(); - omap2_common_pm_late_init(); + omap_common_late_init(); omap3_pm_init(); omap2_clk_enable_autoidle_all(); } void __init am35xx_init_late(void) { - omap_mux_late_init(); - omap2_common_pm_late_init(); + omap_common_late_init(); omap3_pm_init(); omap2_clk_enable_autoidle_all(); } void __init ti81xx_init_late(void) { - omap_mux_late_init(); - omap2_common_pm_late_init(); + omap_common_late_init(); omap3_pm_init(); omap2_clk_enable_autoidle_all(); } @@ -568,7 +573,7 @@ void __init am33xx_init_early(void) am33xx_clockdomains_init(); am33xx_hwmod_init(); omap_hwmod_init_postsetup(); - am33xx_clk_init(); + omap_clk_init = am33xx_clk_init; } #endif @@ -593,13 +598,12 @@ void __init omap4430_init_early(void) omap44xx_clockdomains_init(); omap44xx_hwmod_init(); omap_hwmod_init_postsetup(); - omap4xxx_clk_init(); + omap_clk_init = omap4xxx_clk_init; } void __init omap4430_init_late(void) { - omap_mux_late_init(); - omap2_common_pm_late_init(); + omap_common_late_init(); omap4_pm_init(); omap2_clk_enable_autoidle_all(); } diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c index c2c798c08c2b..a202a4785104 100644 --- a/arch/arm/mach-omap2/omap_hwmod.c +++ b/arch/arm/mach-omap2/omap_hwmod.c @@ -1368,7 +1368,9 @@ static void _enable_sysc(struct omap_hwmod *oh) } if (sf & SYSC_HAS_MIDLEMODE) { - if (oh->flags & HWMOD_SWSUP_MSTANDBY) { + if (oh->flags & HWMOD_FORCE_MSTANDBY) { + idlemode = HWMOD_IDLEMODE_FORCE; + } else if (oh->flags & HWMOD_SWSUP_MSTANDBY) { idlemode = HWMOD_IDLEMODE_NO; } else { if (sf & SYSC_HAS_ENAWAKEUP) @@ -1440,7 +1442,8 @@ static void _idle_sysc(struct omap_hwmod *oh) } if (sf & SYSC_HAS_MIDLEMODE) { - if (oh->flags & HWMOD_SWSUP_MSTANDBY) { + if ((oh->flags & HWMOD_SWSUP_MSTANDBY) || + (oh->flags & HWMOD_FORCE_MSTANDBY)) { idlemode = HWMOD_IDLEMODE_FORCE; } else { if (sf & SYSC_HAS_ENAWAKEUP) diff --git a/arch/arm/mach-omap2/omap_hwmod.h b/arch/arm/mach-omap2/omap_hwmod.h index d43d9b608eda..d5dc935f6060 100644 --- a/arch/arm/mach-omap2/omap_hwmod.h +++ b/arch/arm/mach-omap2/omap_hwmod.h @@ -427,8 +427,8 @@ struct omap_hwmod_omap4_prcm { * * HWMOD_SWSUP_SIDLE: omap_hwmod code should manually bring module in and out * of idle, rather than relying on module smart-idle - * HWMOD_SWSUP_MSTDBY: omap_hwmod code should manually bring module in and out - * of standby, rather than relying on module smart-standby + * HWMOD_SWSUP_MSTANDBY: omap_hwmod code should manually bring module in and + * out of standby, rather than relying on module smart-standby * HWMOD_INIT_NO_RESET: don't reset this module at boot - important for * SDRAM controller, etc. XXX probably belongs outside the main hwmod file * XXX Should be HWMOD_SETUP_NO_RESET @@ -459,6 +459,10 @@ struct omap_hwmod_omap4_prcm { * correctly, or this is being abused to deal with some PM latency * issues -- but we're currently suffering from a shortage of * folks who are able to track these issues down properly. + * HWMOD_FORCE_MSTANDBY: Always keep MIDLEMODE bits cleared so that device + * is kept in force-standby mode. Failing to do so causes PM problems + * with musb on OMAP3630 at least. Note that musb has a dedicated register + * to control MSTANDBY signal when MIDLEMODE is set to force-standby. */ #define HWMOD_SWSUP_SIDLE (1 << 0) #define HWMOD_SWSUP_MSTANDBY (1 << 1) @@ -471,6 +475,7 @@ struct omap_hwmod_omap4_prcm { #define HWMOD_16BIT_REG (1 << 8) #define HWMOD_EXT_OPT_MAIN_CLK (1 << 9) #define HWMOD_BLOCK_WFI (1 << 10) +#define HWMOD_FORCE_MSTANDBY (1 << 11) /* * omap_hwmod._int_flags definitions diff --git a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c index 85c917cb193d..4083606ea1da 100644 --- a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c @@ -1707,9 +1707,14 @@ static struct omap_hwmod omap3xxx_usbhsotg_hwmod = { * Erratum ID: i479 idle_req / idle_ack mechanism potentially * broken when autoidle is enabled * workaround is to disable the autoidle bit at module level. + * + * Enabling the device in any other MIDLEMODE setting but force-idle + * causes core_pwrdm not enter idle states at least on OMAP3630. + * Note that musb has OTG_FORCESTDBY register that controls MSTANDBY + * signal when MIDLEMODE is set to force-idle. */ .flags = HWMOD_NO_OCP_AUTOIDLE | HWMOD_SWSUP_SIDLE - | HWMOD_SWSUP_MSTANDBY, + | HWMOD_FORCE_MSTANDBY, }; /* usb_otg_hs */ diff --git a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c index 0e47d2e1687c..9e0576569e07 100644 --- a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c @@ -2714,6 +2714,10 @@ static struct omap_ocp2scp_dev ocp2scp_dev_attr[] = { { } }; +static struct omap_hwmod_opt_clk ocp2scp_usb_phy_opt_clks[] = { + { .role = "48mhz", .clk = "ocp2scp_usb_phy_phy_48m" }, +}; + /* ocp2scp_usb_phy */ static struct omap_hwmod omap44xx_ocp2scp_usb_phy_hwmod = { .name = "ocp2scp_usb_phy", @@ -2728,6 +2732,8 @@ static struct omap_hwmod omap44xx_ocp2scp_usb_phy_hwmod = { }, }, .dev_attr = ocp2scp_dev_attr, + .opt_clks = ocp2scp_usb_phy_opt_clks, + .opt_clks_cnt = ARRAY_SIZE(ocp2scp_usb_phy_opt_clks), }; /* diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c index 2bdd4cf17a8f..f62b509ed08d 100644 --- a/arch/arm/mach-omap2/timer.c +++ b/arch/arm/mach-omap2/timer.c @@ -547,6 +547,8 @@ static inline void __init realtime_counter_init(void) clksrc_nr, clksrc_src) \ void __init omap##name##_gptimer_timer_init(void) \ { \ + if (omap_clk_init) \ + omap_clk_init(); \ omap_dmtimer_init(); \ omap2_gp_clockevent_init((clkev_nr), clkev_src, clkev_prop); \ omap2_gptimer_clocksource_init((clksrc_nr), clksrc_src); \ @@ -556,6 +558,8 @@ void __init omap##name##_gptimer_timer_init(void) \ clksrc_nr, clksrc_src) \ void __init omap##name##_sync32k_timer_init(void) \ { \ + if (omap_clk_init) \ + omap_clk_init(); \ omap_dmtimer_init(); \ omap2_gp_clockevent_init((clkev_nr), clkev_src, clkev_prop); \ /* Enable the use of clocksource="gp_timer" kernel parameter */ \ |