Samsung 2nd fixes for v4.1
- fix second S2R on exynos4412 based Trats2, Odroid U3 boards which happened after enabling L2$ and caused by commithifive-unleashed-5.113cfa6c4f7("ARM: EXYNOS: Fix CPU idle clock down after CPU off") And replace the soc_is_exynosxxx() macro with of_compatible_xxx - fix dereference of ERR_PTR of of_genpd_get_from_provider() - fix suspend problem on old DT machines to skip the initialization suspend and caused by commit8b283c0254("ARM: exynos4/5: convert pmu wakeup to stacked domains") - add keep-power-in-suspend for Peach Boards to support S2R and has been missed in previous pull-request for fixes -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQIcBAABAgAGBQJVVBCOAAoJEA0Cl+kVi2xqeDoP/27tWRCwy7ZUkhjZ90pHwJYg SIBBGO/Ko4Sts7OqeBHDczHdjhFPlqRLuoKduQrJpHOkcCa2+k9laILC4edTaYJB mTJgUKiJvUPmkTFNkxPq4nf/OOsavpvTyS7Voyv2zDPxwXyY56ml3FEWNM17tQQv 9MdvdMeIga3OdL6/a77HPYYtxmYMCSlJxXOyxE7ReSmIVQa/udRKlEZ7j1B/bt2t c8wVbViXMNuNXsUK/yPgz7F8fnmmzX1HyPqUow6Jx1L7jOltq6fCAa14MiRyAGyH r3GlrmkXvFNtaZnh/Oe/6em3KPkuj7EvCs5paXuFzPcwGEnaS7k5WVUgRuPZXl8A sUEkc7aWUVWScjXsNNmVOZMOC8ZMVLHXYY7ArdEn/V/dZHJzUrulhvpmDHjkA7tP oep2eT3mti1BZqhZ+6C8uD2W0s0HD5Gi+oTvBOvxZbKmJpHOSKFa6zxOwWwRAAJ5 opOPAZxZdgc0BcdcheiCindEMKO0ldzHGTJUsOY5/zXCmigDZUYCtEQRNV7UUHFF sR4b/S92B7y2HVzCLl9Ns6K1HHXU2/VefJmZ945GTL5YedkvTgECi/OeA1taGU9Y fDR0NaxS4rxFhGp5T8JVkweT4ahTGnXyEwHfl3CzSAFq3tHHeD1KqD+D92JUaW14 26jDOQZOa04zXAJzDsTR =r1wn -----END PGP SIGNATURE----- Merge tag 'samsung-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into fixes Merge "Samsung 2nd fixes for v4.1" from Kukjin Kim: - fix second S2R on exynos4412 based Trats2, Odroid U3 boards which happened after enabling L2$ and caused by commit13cfa6c4f7("ARM: EXYNOS: Fix CPU idle clock down after CPU off") And replace the soc_is_exynosxxx() macro with of_compatible_xxx - fix dereference of ERR_PTR of of_genpd_get_from_provider() - fix suspend problem on old DT machines to skip the initialization suspend and caused by commit8b283c0254("ARM: exynos4/5: convert pmu wakeup to stacked domains") - add keep-power-in-suspend for Peach Boards to support S2R and has been missed in previous pull-request for fixes * tag 'samsung-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung: ARM: EXYNOS: Use of_machine_is_compatible instead of soc_is_exynos4 ARM: EXYNOS: Fix failed second suspend on Exynos4 ARM: EXYNOS: Fix dereference of ERR_PTR returned by of_genpd_get_from_provider ARM: EXYNOS: Don't try to initialize suspend on old DT ARM: dts: Add keep-power-in-suspend to WiFi SDIO node for Peach Boards
Arnd Bergmann
commit
56523eefaa
|
|
@ -711,6 +711,7 @@
|
|||
num-slots = <1>;
|
||||
broken-cd;
|
||||
cap-sdio-irq;
|
||||
keep-power-in-suspend;
|
||||
card-detect-delay = <200>;
|
||||
clock-frequency = <400000000>;
|
||||
samsung,dw-mshc-ciu-div = <1>;
|
||||
|
|
|
|||
|
|
@ -674,6 +674,7 @@
|
|||
num-slots = <1>;
|
||||
broken-cd;
|
||||
cap-sdio-irq;
|
||||
keep-power-in-suspend;
|
||||
card-detect-delay = <200>;
|
||||
clock-frequency = <400000000>;
|
||||
samsung,dw-mshc-ciu-div = <1>;
|
||||
|
|
|
|||
|
|
@ -159,6 +159,8 @@ extern void exynos_enter_aftr(void);
|
|||
|
||||
extern struct cpuidle_exynos_data cpuidle_coupled_exynos_data;
|
||||
|
||||
extern void exynos_set_delayed_reset_assertion(bool enable);
|
||||
|
||||
extern void s5p_init_cpu(void __iomem *cpuid_addr);
|
||||
extern unsigned int samsung_rev(void);
|
||||
extern void __iomem *cpu_boot_reg_base(void);
|
||||
|
|
|
|||
|
|
@ -166,6 +166,33 @@ static void __init exynos_init_io(void)
|
|||
exynos_map_io();
|
||||
}
|
||||
|
||||
/*
|
||||
* Set or clear the USE_DELAYED_RESET_ASSERTION option. Used by smp code
|
||||
* and suspend.
|
||||
*
|
||||
* This is necessary only on Exynos4 SoCs. When system is running
|
||||
* USE_DELAYED_RESET_ASSERTION should be set so the ARM CLK clock down
|
||||
* feature could properly detect global idle state when secondary CPU is
|
||||
* powered down.
|
||||
*
|
||||
* However this should not be set when such system is going into suspend.
|
||||
*/
|
||||
void exynos_set_delayed_reset_assertion(bool enable)
|
||||
{
|
||||
if (of_machine_is_compatible("samsung,exynos4")) {
|
||||
unsigned int tmp, core_id;
|
||||
|
||||
for (core_id = 0; core_id < num_possible_cpus(); core_id++) {
|
||||
tmp = pmu_raw_readl(EXYNOS_ARM_CORE_OPTION(core_id));
|
||||
if (enable)
|
||||
tmp |= S5P_USE_DELAYED_RESET_ASSERTION;
|
||||
else
|
||||
tmp &= ~(S5P_USE_DELAYED_RESET_ASSERTION);
|
||||
pmu_raw_writel(tmp, EXYNOS_ARM_CORE_OPTION(core_id));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Apparently, these SoCs are not able to wake-up from suspend using
|
||||
* the PMU. Too bad. Should they suddenly become capable of such a
|
||||
|
|
|
|||
|
|
@ -34,30 +34,6 @@
|
|||
|
||||
extern void exynos4_secondary_startup(void);
|
||||
|
||||
/*
|
||||
* Set or clear the USE_DELAYED_RESET_ASSERTION option, set on Exynos4 SoCs
|
||||
* during hot-(un)plugging CPUx.
|
||||
*
|
||||
* The feature can be cleared safely during first boot of secondary CPU.
|
||||
*
|
||||
* Exynos4 SoCs require setting USE_DELAYED_RESET_ASSERTION during powering
|
||||
* down a CPU so the CPU idle clock down feature could properly detect global
|
||||
* idle state when CPUx is off.
|
||||
*/
|
||||
static void exynos_set_delayed_reset_assertion(u32 core_id, bool enable)
|
||||
{
|
||||
if (soc_is_exynos4()) {
|
||||
unsigned int tmp;
|
||||
|
||||
tmp = pmu_raw_readl(EXYNOS_ARM_CORE_OPTION(core_id));
|
||||
if (enable)
|
||||
tmp |= S5P_USE_DELAYED_RESET_ASSERTION;
|
||||
else
|
||||
tmp &= ~(S5P_USE_DELAYED_RESET_ASSERTION);
|
||||
pmu_raw_writel(tmp, EXYNOS_ARM_CORE_OPTION(core_id));
|
||||
}
|
||||
}
|
||||
|
||||
#ifdef CONFIG_HOTPLUG_CPU
|
||||
static inline void cpu_leave_lowpower(u32 core_id)
|
||||
{
|
||||
|
|
@ -73,8 +49,6 @@ static inline void cpu_leave_lowpower(u32 core_id)
|
|||
: "=&r" (v)
|
||||
: "Ir" (CR_C), "Ir" (0x40)
|
||||
: "cc");
|
||||
|
||||
exynos_set_delayed_reset_assertion(core_id, false);
|
||||
}
|
||||
|
||||
static inline void platform_do_lowpower(unsigned int cpu, int *spurious)
|
||||
|
|
@ -87,14 +61,6 @@ static inline void platform_do_lowpower(unsigned int cpu, int *spurious)
|
|||
/* Turn the CPU off on next WFI instruction. */
|
||||
exynos_cpu_power_down(core_id);
|
||||
|
||||
/*
|
||||
* Exynos4 SoCs require setting
|
||||
* USE_DELAYED_RESET_ASSERTION so the CPU idle
|
||||
* clock down feature could properly detect
|
||||
* global idle state when CPUx is off.
|
||||
*/
|
||||
exynos_set_delayed_reset_assertion(core_id, true);
|
||||
|
||||
wfi();
|
||||
|
||||
if (pen_release == core_id) {
|
||||
|
|
@ -371,9 +337,6 @@ static int exynos_boot_secondary(unsigned int cpu, struct task_struct *idle)
|
|||
udelay(10);
|
||||
}
|
||||
|
||||
/* No harm if this is called during first boot of secondary CPU */
|
||||
exynos_set_delayed_reset_assertion(core_id, false);
|
||||
|
||||
/*
|
||||
* now the secondary core is starting up let it run its
|
||||
* calibrations, then wait for it to finish
|
||||
|
|
@ -420,6 +383,8 @@ static void __init exynos_smp_prepare_cpus(unsigned int max_cpus)
|
|||
|
||||
exynos_sysram_init();
|
||||
|
||||
exynos_set_delayed_reset_assertion(true);
|
||||
|
||||
if (read_cpuid_part() == ARM_CPU_PART_CORTEX_A9)
|
||||
scu_enable(scu_base_addr());
|
||||
|
||||
|
|
|
|||
|
|
@ -188,7 +188,7 @@ no_clk:
|
|||
args.np = np;
|
||||
args.args_count = 0;
|
||||
child_domain = of_genpd_get_from_provider(&args);
|
||||
if (!child_domain)
|
||||
if (IS_ERR(child_domain))
|
||||
continue;
|
||||
|
||||
if (of_parse_phandle_with_args(np, "power-domains",
|
||||
|
|
@ -196,7 +196,7 @@ no_clk:
|
|||
continue;
|
||||
|
||||
parent_domain = of_genpd_get_from_provider(&args);
|
||||
if (!parent_domain)
|
||||
if (IS_ERR(parent_domain))
|
||||
continue;
|
||||
|
||||
if (pm_genpd_add_subdomain(parent_domain, child_domain))
|
||||
|
|
|
|||
|
|
@ -342,6 +342,8 @@ static void exynos_pm_enter_sleep_mode(void)
|
|||
|
||||
static void exynos_pm_prepare(void)
|
||||
{
|
||||
exynos_set_delayed_reset_assertion(false);
|
||||
|
||||
/* Set wake-up mask registers */
|
||||
exynos_pm_set_wakeup_mask();
|
||||
|
||||
|
|
@ -482,6 +484,7 @@ early_wakeup:
|
|||
|
||||
/* Clear SLEEP mode set in INFORM1 */
|
||||
pmu_raw_writel(0x0, S5P_INFORM1);
|
||||
exynos_set_delayed_reset_assertion(true);
|
||||
}
|
||||
|
||||
static void exynos3250_pm_resume(void)
|
||||
|
|
@ -723,8 +726,10 @@ void __init exynos_pm_init(void)
|
|||
return;
|
||||
}
|
||||
|
||||
if (WARN_ON(!of_find_property(np, "interrupt-controller", NULL)))
|
||||
if (WARN_ON(!of_find_property(np, "interrupt-controller", NULL))) {
|
||||
pr_warn("Outdated DT detected, suspend/resume will NOT work\n");
|
||||
return;
|
||||
}
|
||||
|
||||
pm_data = (const struct exynos_pm_data *) match->data;
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue