[PATCH 1/2] ARM: dts: ls1043a: add a rcpm node

2016-08-01 Thread Chenhui Zhao
LS1043A have a RCPM module (Run Control and Power Management), which performs all device-level tasks associated with power management. Signed-off-by: Chenhui Zhao --- arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi | 6 ++ 1 file changed, 6 insertions(+) diff --git a/arch/arm64/boot/dts

[PATCH 2/2] soc: nxp: Add a RCPM driver

2016-08-01 Thread Chenhui Zhao
. The devices can be waked up by specified sources, such as Flextimer, GPIO and so on. Signed-off-by: Chenhui Zhao --- drivers/soc/fsl/Makefile | 1 + drivers/soc/fsl/pm/Makefile | 1 + drivers/soc/fsl/pm/ls-rcpm.c | 144 +++ 3 files changed

Re: [PATCH v2,4/5] PowerPC/mpc85xx: Add hotplug support on E5500 and E500MC cores

2015-08-27 Thread Chenhui Zhao
On Thu, Aug 27, 2015 at 4:55 AM, Scott Wood wrote: On Wed, Aug 26, 2015 at 08:09:47PM +0800, Chenhui Zhao wrote: +int check_cpu_dead(unsigned int cpu) +{ + return per_cpu(cpu_state, cpu) == CPU_DEAD; +} I'm not sure this needs to be a function versus open-coded, but if y

Re: [PATCH v2,5/5] PowerPC/mpc85xx: Add CPU hotplug support for E6500

2015-08-27 Thread Chenhui Zhao
On Thu, Aug 27, 2015 at 6:42 AM, Scott Wood wrote: On Wed, Aug 26, 2015 at 08:09:48PM +0800, Chenhui Zhao wrote: + .globl booting_thread_hwid +booting_thread_hwid: + .long INVALID_THREAD_HWID + .align 3 The commit message goes into no detail about the changes you&#x

Re: [PATCH 3/9] powerpc/rcpm: add RCPM driver

2014-03-11 Thread Chenhui Zhao
On Tue, Mar 11, 2014 at 06:42:51PM -0500, Scott Wood wrote: > On Fri, 2014-03-07 at 12:57 +0800, Chenhui Zhao wrote: > > diff --git a/arch/powerpc/platforms/85xx/corenet_generic.c > > b/arch/powerpc/platforms/85xx/corenet_generic.c > > index b756f3d..3fdf9f3 100644 &

Re: [PATCH 4/9] powerpc/85xx: support CPU hotplug for e500mc and e5500

2014-03-11 Thread Chenhui Zhao
On Tue, Mar 11, 2014 at 06:48:13PM -0500, Scott Wood wrote: > On Fri, 2014-03-07 at 12:58 +0800, Chenhui Zhao wrote: > > diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c > > index ac2621a..f3f4401 100644 > > --- a/arch/powerpc/kernel/smp.c > > +++

Re: [PATCH 5/9] powerpc/85xx: disable irq by hardware when suspend for 64-bit

2014-03-12 Thread Chenhui Zhao
On Tue, Mar 11, 2014 at 06:51:20PM -0500, Scott Wood wrote: > On Fri, 2014-03-07 at 12:58 +0800, Chenhui Zhao wrote: > > In 64-bit mode, kernel just clears the irq soft-enable flag > > in struct paca_struct to disable external irqs. But, in > > the case of suspend, irqs

Re: [PATCH 6/9] powerpc/85xx: support sleep feature on QorIQ SoCs with RCPM

2014-03-12 Thread Chenhui Zhao
On Tue, Mar 11, 2014 at 07:00:27PM -0500, Scott Wood wrote: > On Fri, 2014-03-07 at 12:58 +0800, Chenhui Zhao wrote: > > In sleep mode, the clocks of e500 cores and unused IP blocks is > > turned off. The IP blocks which are allowed to wake up the processor > > are still

Re: [PATCH 7/9] fsl: add EPU FSM configuration for deep sleep

2014-03-12 Thread Chenhui Zhao
On Tue, Mar 11, 2014 at 07:08:43PM -0500, Scott Wood wrote: > On Fri, 2014-03-07 at 12:58 +0800, Chenhui Zhao wrote: > > From: Hongbo Zhang > > > > In the last stage of deep sleep, software will trigger a Finite > > State Machine (FSM) to control the hardware p

Re: [PATCH 8/9] powerpc/85xx: add save/restore functions for core registers

2014-03-12 Thread Chenhui Zhao
On Tue, Mar 11, 2014 at 07:45:14PM -0500, Scott Wood wrote: > On Fri, 2014-03-07 at 12:58 +0800, Chenhui Zhao wrote: > > From: Wang Dongsheng > > > > Add booke_cpu_state_save() and booke_cpu_state_restore() functions which > > can be > > used to save/restore CP

Re: [PATCH 9/9] powerpc/pm: support deep sleep feature on T1040

2014-03-12 Thread Chenhui Zhao
On Tue, Mar 11, 2014 at 08:10:24PM -0500, Scott Wood wrote: > On Fri, 2014-03-07 at 12:58 +0800, Chenhui Zhao wrote: > > From: Zhao Chenhui > > > > T1040 supports deep sleep feature, which can switch off most parts of > > the SoC when it is in deep sleep mode

Re: [PATCH 5/9] powerpc/85xx: disable irq by hardware when suspend for 64-bit

2014-03-17 Thread Chenhui Zhao
On Fri, Mar 14, 2014 at 05:41:41PM -0500, Scott Wood wrote: > On Wed, 2014-03-12 at 15:46 +0800, Chenhui Zhao wrote: > > On Tue, Mar 11, 2014 at 06:51:20PM -0500, Scott Wood wrote: > > > On Fri, 2014-03-07 at 12:58 +0800, Chenhui Zhao wrote: > > > > In 64-bit mode, k

Re: [PATCH 7/9] fsl: add EPU FSM configuration for deep sleep

2014-03-17 Thread Chenhui Zhao
On Fri, Mar 14, 2014 at 05:51:09PM -0500, Scott Wood wrote: > On Wed, 2014-03-12 at 16:34 +0800, Chenhui Zhao wrote: > > On Tue, Mar 11, 2014 at 07:08:43PM -0500, Scott Wood wrote: > > > On Fri, 2014-03-07 at 12:58 +0800, Chenhui Zhao wrote: > > > > From: Hongbo Zhang

Re: [PATCH 8/9] powerpc/85xx: add save/restore functions for core registers

2014-03-17 Thread Chenhui Zhao
On Fri, Mar 14, 2014 at 06:01:45PM -0500, Scott Wood wrote: > On Wed, 2014-03-12 at 17:42 +0800, Chenhui Zhao wrote: > > On Tue, Mar 11, 2014 at 07:45:14PM -0500, Scott Wood wrote: > > > On Fri, 2014-03-07 at 12:58 +0800, Chenhui Zhao wrote: > > > > From: Wang D

Re: [PATCH 9/9] powerpc/pm: support deep sleep feature on T1040

2014-03-17 Thread Chenhui Zhao
On Fri, Mar 14, 2014 at 06:18:27PM -0500, Scott Wood wrote: > On Wed, 2014-03-12 at 18:40 +0800, Chenhui Zhao wrote: > > On Tue, Mar 11, 2014 at 08:10:24PM -0500, Scott Wood wrote: > > > On Fri, 2014-03-07 at 12:58 +0800, Chenhui Zhao wrote: > > > > From: Zhao C

Re: [PATCH 7/9] fsl: add EPU FSM configuration for deep sleep

2014-03-18 Thread Chenhui Zhao
On Tue, Mar 18, 2014 at 06:21:22PM -0500, Scott Wood wrote: > On Mon, 2014-03-17 at 18:27 +0800, Chenhui Zhao wrote: > > On Fri, Mar 14, 2014 at 05:51:09PM -0500, Scott Wood wrote: > > > On Wed, 2014-03-12 at 16:34 +0800, Chenhui Zhao wrote: > > > > On Tue, Mar 11, 2

Re: [PATCH 9/9] powerpc/pm: support deep sleep feature on T1040

2014-03-18 Thread Chenhui Zhao
On Tue, Mar 18, 2014 at 05:42:09PM -0500, Scott Wood wrote: > On Mon, 2014-03-17 at 19:19 +0800, Chenhui Zhao wrote: > > On Fri, Mar 14, 2014 at 06:18:27PM -0500, Scott Wood wrote: > > > On Wed, 2014-03-12 at 18:40 +0800, Chenhui Zhao wrote: > > > > On Tue, Mar 11, 2

[PATCH 1/3] arm: ls1: add CPU hotplug platform support

2014-09-26 Thread Chenhui Zhao
From: Zhang Zhuoyu This implements CPU hotplug for ls1. When cpu is down, it will be put in WFI state. When cpu is up, it will be waked by a IPI interrupt and reinitialized. Signed-off-by: Zhang Zhuoyu Signed-off-by: Chenhui Zhao --- arch/arm/mach-imx/common.h |4 ++ arch/arm/mach-imx

[PATCH 0/3] arm: ls1: add deep sleep support

2014-09-26 Thread Chenhui Zhao
These patches are for supporting deep sleep on LS1. They are based on the platform patches for LS1. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Ple

[PATCH 3/3] arm: pm: add deep sleep support for LS1

2014-09-26 Thread Chenhui Zhao
LS1 supports deep sleep feature that can switch off most parts of the SoC when it is in deep sleep state. The DDR controller will also be powered off in deep sleep. Therefore, copy the last stage code to enter deep sleep to SRAM and run it with disabling MMU and caches. Signed-off-by: Chenhui

[PATCH 2/3] pm: add FSM configuration for deep sleep

2014-09-26 Thread Chenhui Zhao
For some Freescale's SoCs which support deep sleep, such as T1040, LS1021, software will start a Finite State Machine (FSM) to control the hardware precedure to enter deep sleep and return from it. This patch configures parameters of the FSM preparing for deep sleep. Signed-off-by: Chenhui

Re: [PATCH 2/3] pm: add FSM configuration for deep sleep

2014-09-28 Thread Chenhui Zhao
On Fri, Sep 26, 2014 at 09:51:53PM +0100, Russell King - ARM Linux wrote: > On Fri, Sep 26, 2014 at 01:02:01PM +0100, Russell King - ARM Linux wrote: > > On Fri, Sep 26, 2014 at 07:25:02PM +0800, Chenhui Zhao wrote: > > > +void fsm_write32(void __iomem *addr, u32 val) >

Re: [PATCH 3/3] arm: pm: add deep sleep support for LS1

2014-09-28 Thread Chenhui Zhao
On Fri, Sep 26, 2014 at 01:14:27PM +0100, Russell King - ARM Linux wrote: > On Fri, Sep 26, 2014 at 07:25:03PM +0800, Chenhui Zhao wrote: > > +static int ls1_start_deepsleep(unsigned long addr) > > +{ > > + ls1_do_deepsleep(addr); > > + > > + return 0;

Re: [PATCH 3/3] arm: pm: add deep sleep support for LS1

2014-09-29 Thread Chenhui Zhao
On Sun, Sep 28, 2014 at 03:26:33PM +0100, Russell King - ARM Linux wrote: > On Sun, Sep 28, 2014 at 07:06:40PM +0800, Chenhui Zhao wrote: > > On Fri, Sep 26, 2014 at 01:14:27PM +0100, Russell King - ARM Linux wrote: > > > On Fri, Sep 26, 2014 at 07:25:03PM +0800,

[PATCH 1/9] powerpc/fsl: add PVR definition for E500MC and E5500

2014-03-06 Thread Chenhui Zhao
From: Wang Dongsheng Signed-off-by: Wang Dongsheng --- arch/powerpc/include/asm/reg.h |2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h index 62b114e..cd7b630 100644 --- a/arch/powerpc/include/asm/reg.h +++

[PATCH 3/9] powerpc/rcpm: add RCPM driver

2014-03-06 Thread Chenhui Zhao
of register map in RCPM, which is specified by the compatible entry in the RCPM node of device tree. Signed-off-by: Chenhui Zhao --- arch/powerpc/include/asm/fsl_guts.h | 105 arch/powerpc/platforms/85xx/Kconfig |1 + arch/powerpc/platforms/85xx

[PATCH 4/9] powerpc/85xx: support CPU hotplug for e500mc and e5500

2014-03-06 Thread Chenhui Zhao
Implemented CPU hotplug on e500mc and e5500. On e5500 both 32-bit and 64-bit modes can work. Used some callback functions implemented in RCPM driver. Signed-off-by: Chenhui Zhao --- arch/powerpc/Kconfig |2 +- arch/powerpc/kernel/smp.c |6 ++- arch/powerpc/mm

[PATCH 8/9] powerpc/85xx: add save/restore functions for core registers

2014-03-06 Thread Chenhui Zhao
ff-by: Chenhui Zhao --- arch/powerpc/include/asm/booke_save_regs.h | 96 arch/powerpc/kernel/Makefile |1 + arch/powerpc/kernel/booke_save_regs.S | 361 3 files changed, 458 insertions(+), 0 deletions(-) create mode 100644 arch/powerpc/in

[PATCH 5/9] powerpc/85xx: disable irq by hardware when suspend for 64-bit

2014-03-06 Thread Chenhui Zhao
In 64-bit mode, kernel just clears the irq soft-enable flag in struct paca_struct to disable external irqs. But, in the case of suspend, irqs should be disabled by hardware. Therefore, hook a function to ppc_md.suspend_disable_irqs to really disable irqs. Signed-off-by: Chenhui Zhao --- arch

[PATCH 2/9] powerpc/cache: add cache flush operation for various e500

2014-03-06 Thread Chenhui Zhao
caches in the current cpu. Signed-off-by: Chenhui Zhao --- arch/powerpc/include/asm/cacheflush.h |2 - arch/powerpc/include/asm/cputable.h | 11 +++ arch/powerpc/kernel/asm-offsets.c |3 + arch/powerpc/kernel/cpu_setup_fsl_booke.S | 114

[PATCH 7/9] fsl: add EPU FSM configuration for deep sleep

2014-03-06 Thread Chenhui Zhao
early resume precedure. This patch configure the EPU FSM preparing for deep sleep. Signed-off-by: Hongbo Zhang Signed-off-by: Chenhui Zhao --- arch/powerpc/platforms/85xx/Kconfig |1 + arch/powerpc/sysdev/fsl_soc.h |3 + drivers/platform/Kconfig|4 + drivers

[PATCH 6/9] powerpc/85xx: support sleep feature on QorIQ SoCs with RCPM

2014-03-06 Thread Chenhui Zhao
-by: Chenhui Zhao --- arch/powerpc/Kconfig |4 +- arch/powerpc/platforms/85xx/Makefile |3 + arch/powerpc/platforms/85xx/qoriq_pm.c | 78 3 files changed, 83 insertions(+), 2 deletions(-) create mode 100644 arch/powerpc/platforms/8

[PATCH 9/9] powerpc/pm: support deep sleep feature on T1040

2014-03-06 Thread Chenhui Zhao
/deepsleep.c new file mode 100644 index 000..ddd7185 --- /dev/null +++ b/arch/powerpc/platforms/85xx/deepsleep.c @@ -0,0 +1,201 @@ +/* + * Support deep sleep feature + * + * Copyright 2014 Freescale Semiconductor Inc. + * + * Author: Chenhui Zhao + * + * This program is free software; you can redist

[PATCH v2 2/2] arm: pm: add deep sleep support for LS1

2014-10-22 Thread Chenhui Zhao
LS1 supports deep sleep feature that can switch off most parts of the SoC when it is in deep sleep state. The DDR controller will also be powered off in deep sleep. Therefore, copy the last stage code to enter deep sleep to SRAM and run it with disabling MMU and caches. Signed-off-by: Chenhui

[PATCH v2 1/2] pm: add FSM configuration for deep sleep

2014-10-22 Thread Chenhui Zhao
For some Freescale's SoCs which support deep sleep, such as T1040, LS1021, software will start a Finite State Machine (FSM) to control the hardware precedure to enter deep sleep and return from it. This patch configures parameters of the FSM preparing for deep sleep. Signed-off-by: Chenhui

[PATCH] powerpc/corenet: use the mixed mode of MPIC when enabling CPU hotplug

2015-07-22 Thread Chenhui Zhao
Core reset may cause issue if using the proxy mode of MPIC. Use the mixed mode of MPIC if enabling CPU hotplug. Signed-off-by: Chenhui Zhao --- arch/powerpc/platforms/85xx/corenet_generic.c | 8 1 file changed, 8 insertions(+) diff --git a/arch/powerpc/platforms/85xx/corenet_generic.c

[PATCH] powerpc/85xx: add sleep and deep sleep support

2015-07-24 Thread Chenhui Zhao
Linux Power Management. Command to enter sleep mode. echo standby > /sys/power/state Command to enter deep sleep mode. echo mem > /sys/power/state Signed-off-by: Li Yang Signed-off-by: Chenhui Zhao --- arch/powerpc/include/asm/cacheflush.h | 5 + arch/powerpc/platforms/85xx/Ma

Re: [PATCH v5] powerpc/rcpm: add RCPM driver

2015-08-03 Thread Chenhui Zhao
On Tue, Aug 4, 2015 at 4:23 AM, Scott Wood wrote: On Mon, 2015-08-03 at 19:14 +0800, Chenhui Zhao wrote: On Sat, Aug 1, 2015 at 8:45 AM, Scott Wood wrote: > On Fri, 2015-06-26 at 15:44 +0800, Yuantian.Tang@freescale.comwrote: > > +static void rcpm_v1_set_ip_power(bool en

Re: [PATCH 1/3] Powerpc: mpc85xx: refactor the PM operations

2015-08-05 Thread Chenhui Zhao
On Tue, Aug 4, 2015 at 4:26 AM, Scott Wood wrote: On Mon, 2015-08-03 at 19:32 +0800, Chenhui Zhao wrote: > On Sat, Aug 1, 2015 at 7:59 AM, Scott Wood wrote: > > Could you explain irq_mask()? Why would there still be IRQs destined > for > this CPU at thi

Re: [PATCH 2/3] PowerPC/mpc85xx: Add hotplug support on E5500 and E500MC cores

2015-08-05 Thread Chenhui Zhao
On Tue, Aug 4, 2015 at 5:18 AM, Scott Wood wrote: [Added linuxppc-...@lists.ozlabs.org. Besides that list being required for review of PPC patches, it feeds the patchwork that I use to track and apply patches.] On Mon, 2015-08-03 at 19:52 +0800, Chenhui Zhao wrote: On Sat, Aug 1, 2015

Re: [PATCH 3/3] PowerPC/mpc85xx: Add hotplug support on E6500 cores

2015-08-05 Thread Chenhui Zhao
On Sat, Aug 1, 2015 at 8:22 AM, Scott Wood wrote: On Fri, 2015-07-31 at 17:20 +0800, b29...@freescale.com wrote: diff --git a/arch/powerpc/platforms/85xx/smp.c b/arch/powerpc/platforms/85xx/smp.c index 7f0dadb..8652a49 100644 --- a/arch/powerpc/platforms/85xx/smp.c +++ b/arch/powerpc/pl

Re: [PATCH 1/3] Powerpc: mpc85xx: refactor the PM operations

2015-08-05 Thread Chenhui Zhao
On Thu, Aug 6, 2015 at 10:57 AM, Scott Wood wrote: On Wed, 2015-08-05 at 18:11 +0800, Chenhui Zhao wrote: On Tue, Aug 4, 2015 at 4:26 AM, Scott Wood wrote: > On Mon, 2015-08-03 at 19:32 +0800, Chenhui Zhao wrote: > > > > > > On Sat, Aug 1, 2015 at 7:59 AM, Scot

Re: [PATCH 3/3] PowerPC/mpc85xx: Add hotplug support on E6500 cores

2015-08-05 Thread Chenhui Zhao
On Thu, Aug 6, 2015 at 11:16 AM, Scott Wood wrote: On Wed, 2015-08-05 at 19:08 +0800, Chenhui Zhao wrote: On Sat, Aug 1, 2015 at 8:22 AM, Scott Wood wrote: > On Fri, 2015-07-31 at 17:20 +0800, b29983@freescale.comwrote: > > + /* > > + * If b

Re: [PATCH 1/3] Powerpc: mpc85xx: refactor the PM operations

2015-08-05 Thread Chenhui Zhao
On Thu, Aug 6, 2015 at 1:46 PM, Scott Wood wrote: On Thu, 2015-08-06 at 12:20 +0800, Chenhui Zhao wrote: On Thu, Aug 6, 2015 at 10:57 AM, Scott Wood wrote: > On Wed, 2015-08-05 at 18:11 +0800, Chenhui Zhao wrote: > > On Tue, Aug 4, 2015 at 4:26 AM, Scott Wood &

[PATCH v2,5/5] PowerPC/mpc85xx: Add CPU hotplug support for E6500

2015-08-26 Thread Chenhui Zhao
Support Freescale E6500 core-based platforms, like t4240. Support disabling/enabling individual CPU thread dynamically. Signed-off-by: Chenhui Zhao --- major changes for v2: * start Thread1 by Thread0 when we want to boot Thread1 only replacing the method of changing cpu physical id arch

[PATCH v2,1/5] powerpc/cache: add cache flush operation for various e500

2015-08-26 Thread Chenhui Zhao
caches inside the current cpu. Signed-off-by: Chenhui Zhao Signed-off-by: Tang Yuantian --- arch/powerpc/include/asm/cacheflush.h | 2 - arch/powerpc/include/asm/cputable.h | 11 +++ arch/powerpc/kernel/asm-offsets.c | 3 + arch/powerpc/kernel/cpu_setup_fsl_booke.S | 112

[PATCH v2,4/5] PowerPC/mpc85xx: Add hotplug support on E5500 and E500MC cores

2015-08-26 Thread Chenhui Zhao
Freescale E500MC and E5500 core-based platforms, like P4080, T1040, support disabling/enabling CPU dynamically. This patch adds this feature on those platforms. Signed-off-by: Chenhui Zhao Signed-off-by: Tang Yuantian --- major changes for v2: * factor out smp_85xx_start_cpu() * move

[PATCH v2,2/5] powerpc/rcpm: add RCPM driver

2015-08-26 Thread Chenhui Zhao
G_FSL_85XX_CACHE_SRAM) += fsl_85xx_l2ctlr.o fsl_85xx_cache_sram.o diff --git a/arch/powerpc/sysdev/fsl_rcpm.c b/arch/powerpc/sysdev/fsl_rcpm.c new file mode 100644 index 000..ed59881 --- /dev/null +++ b/arch/powerpc/sysdev/fsl_rcpm.c @@ -0,0 +1,390 @@ +/* + * RCPM(Run Control/Power Management) sup

[PATCH v2,3/5] Powerpc: mpc85xx: refactor the PM operations

2015-08-26 Thread Chenhui Zhao
Freescale CoreNet-based and Non-CoreNet-based platforms require different PM operations. This patch extracted existing PM operations on Non-CoreNet-based platforms to a new file which can accommodate both platforms. In this way, PM operation codes are clearer structurally. Signed-off-by: Chenhui

Re: [PATCH 1/3] Powerpc: mpc85xx: refactor the PM operations

2015-08-06 Thread Chenhui Zhao
On Fri, Aug 7, 2015 at 2:02 AM, Scott Wood wrote: On Thu, 2015-08-06 at 13:54 +0800, Chenhui Zhao wrote: On Thu, Aug 6, 2015 at 1:46 PM, Scott Wood wrote: > On Thu, 2015-08-06 at 12:20 +0800, Chenhui Zhao wrote: > > On Thu, Aug 6, 2015 at 10:57 AM, Scott Wood > &g

[PATCH] powerpc/dts: fix rcpm compatible string

2016-04-15 Thread Chenhui Zhao
For T1040, T1042, T1023, and T1024, they should use the compatible string "fsl,qoriq-rcpm-2.1". Signed-off-by: Chenhui Zhao --- arch/powerpc/boot/dts/fsl/t1023si-post.dtsi | 2 +- arch/powerpc/boot/dts/fsl/t1040si-post.dtsi | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) di

[PATCH 4/4] powerpc/85xx: support sleep feature on QorIQ SoCs with RCPM

2015-03-26 Thread Chenhui Zhao
-by: Chenhui Zhao --- arch/powerpc/Kconfig | 3 +- arch/powerpc/platforms/85xx/Kconfig| 5 +++ arch/powerpc/platforms/85xx/Makefile | 1 + arch/powerpc/platforms/85xx/qoriq_pm.c | 59 ++ arch/powerpc/platforms/86xx/Kconfig| 1 + 5 fi

[PATCH 1/4] powerpc/cache: add cache flush operation for various e500

2015-03-26 Thread Chenhui Zhao
caches inside the current cpu. Signed-off-by: Chenhui Zhao --- arch/powerpc/include/asm/cacheflush.h | 2 - arch/powerpc/include/asm/cputable.h | 11 +++ arch/powerpc/kernel/asm-offsets.c | 3 + arch/powerpc/kernel/cpu_setup_fsl_booke.S | 114

[PATCH 3/4] powerpc: support CPU hotplug for e500mc, e5500 and e6500

2015-03-26 Thread Chenhui Zhao
power state). When the core is up again, Thread0 is up first, and it will be bound with the present booting cpu. This way, all CPUs can hotplug separately. Signed-off-by: Chenhui Zhao --- arch/powerpc/Kconfig | 2 +- arch/powerpc/include/asm/fsl_pm.h | 4 + arch/powerpc/include

[PATCH 2/4] powerpc/rcpm: add RCPM driver

2015-03-26 Thread Chenhui Zhao
.o diff --git a/arch/powerpc/sysdev/fsl_rcpm.c b/arch/powerpc/sysdev/fsl_rcpm.c new file mode 100644 index 000..e30f1bc --- /dev/null +++ b/arch/powerpc/sysdev/fsl_rcpm.c @@ -0,0 +1,353 @@ +/* + * RCPM(Run Control/Power Management) support + * + * Copyright 2012-2015 Freescale Semiconductor Inc. +

[PATCH 2/4] arm: ls1021a: add dts nodes required by deep sleep

2015-01-30 Thread Chenhui Zhao
Add RCPM and DCSR nodes. Signed-off-by: Chenhui Zhao --- arch/arm/boot/dts/ls1021a-qds.dts | 6 +- arch/arm/boot/dts/ls1021a.dtsi| 117 ++ 2 files changed, 122 insertions(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/ls1021a-qds.dts b/arch/arm/boot

[PATCH 3/4] arm: ls1021a: add deep sleep support

2015-01-30 Thread Chenhui Zhao
: Chenhui Zhao --- arch/arm/mach-imx/Kconfig | 1 + arch/arm/mach-imx/Makefile| 2 + arch/arm/mach-imx/pm-ls1.c| 374 ++ arch/arm/mach-imx/sleep-ls1.S | 137 arch/arm/mach-imx/sleep-ls1.h | 19 +++ 5 files changed, 533

[PATCH 1/4] fsl: add EPU FSM configuration for deep sleep

2015-01-30 Thread Chenhui Zhao
and clears the FSM registers for deep sleep. Note that the sequence of clearing the FSM registers does matter, should follow the sequence mentioned in the reference manual. Signed-off-by: Chenhui Zhao --- drivers/platform/Kconfig | 2 + drivers/platform/Makefile| 1 + drivers

[PATCH 4/4] arm: ls1021a: set wakeup devices dynamically for sleep/deep sleep

2015-01-30 Thread Chenhui Zhao
If a device works as a wakeup source, it will keep working in the period of sleep/deep sleep. This patch sets the wakeup devices according to the wakeup attribute of device. Signed-off-by: Chenhui Zhao --- arch/arm/boot/dts/ls1021a.dtsi | 2 + arch/arm/mach-imx/pm-ls1.c | 101

[PATCH] cpuidle: remove cpu_pm calls when entering a idle state

2016-10-21 Thread Chenhui Zhao
The functions, cpu_pm_enter and cpu_pm_exit, assume that CPU would be reset when entering and exiting a idle state. If that is not the case, they would cause issue. Signed-off-by: Chenhui Zhao --- include/linux/cpuidle.h | 7 +-- 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a

[PATCH v3 1/5] powerpc/dts: add mcke-gpios for PM feature

2016-08-02 Thread Chenhui Zhao
Signed-off-by: Chenhui Zhao --- Documentation/devicetree/bindings/soc/fsl/rcpm.txt | 13 + arch/powerpc/boot/dts/fsl/t1040si-post.dtsi| 3 +++ 2 files changed, 16 insertions(+) diff --git a/Documentation/devicetree/bindings/soc/fsl/rcpm.txt b/Documentation/devicetree

[PATCH v3 4/5] powerpc/pm: support deep sleep feature on T104x

2016-08-02 Thread Chenhui Zhao
access. This piece of code and related TLBs are prefetched in advance. Due to the different initialization code between 32-bit and 64-bit, they have separate resume entry and precedure. The feature supports 32-bit and 64-bit kernel mode. Signed-off-by: Chenhui Zhao --- arch/powerpc/include/asm

[PATCH v3 5/5] powerpc/pm: save and restore registers during deep sleep

2016-08-02 Thread Chenhui Zhao
Some CCSR registers will lost during deep sleep. Therefore, should save them before entering deep sleep, and restore them when resuming from deep sleep. Signed-off-by: Tang Yuantian Signed-off-by: Chenhui Zhao --- arch/powerpc/include/asm/fsl_pm.h | 2 + arch/powerpc/platforms/85xx

[PATCH v3 3/5] powerpc: pm: add EPU FSM configuration for deep sleep

2016-08-02 Thread Chenhui Zhao
precedure. This patch configure the EPU FSM preparing for deep sleep. Signed-off-by: Chenhui Zhao --- arch/powerpc/platforms/85xx/Makefile| 2 +- arch/powerpc/platforms/85xx/sleep_fsm.c | 267 arch/powerpc/platforms/85xx/sleep_fsm.h | 92 +++ 3 files

[PATCH v3 2/5] powerpc/85xx: support sleep feature on QorIQ SoCs with RCPM

2016-08-02 Thread Chenhui Zhao
-by: Chenhui Zhao --- arch/powerpc/Kconfig | 3 +- arch/powerpc/include/asm/fsl_pm.h | 2 +- arch/powerpc/platforms/85xx/Kconfig| 5 +++ arch/powerpc/platforms/85xx/Makefile | 1 + arch/powerpc/platforms/85xx/qoriq_pm.c | 59 ++ arch/powe

[PATCH v3 1/5] powerpc/dts: add mcke-gpios for PM feature

2016-08-02 Thread Chenhui Zhao
Signed-off-by: Chenhui Zhao --- Documentation/devicetree/bindings/soc/fsl/rcpm.txt | 13 + arch/powerpc/boot/dts/fsl/t1040si-post.dtsi| 3 +++ 2 files changed, 16 insertions(+) diff --git a/Documentation/devicetree/bindings/soc/fsl/rcpm.txt b/Documentation/devicetree

[PATCH v3 0/5] powerpc/pm: QorIQ deep sleep

2016-08-02 Thread Chenhui Zhao
deep sleep http://patchwork.ozlabs.org/patch/502548/ [4/4] powerpc: pm: support deep sleep feature on T104x http://patchwork.ozlabs.org/patch/502550/ Chenhui Zhao (5): powerpc/dts: add mcke-gpios for PM feature powerpc/85xx: support sleep feature on QorIQ SoCs with RCPM powerpc: pm: a

Re: [PATCH 2/2] soc: nxp: Add a RCPM driver

2016-08-02 Thread Chenhui Zhao
On Mon, Aug 1, 2016 at 9:22 PM, Marc Zyngier wrote: > > On 01/08/16 10:49, Chenhui Zhao wrote: > > The NXP's QorIQ Processors based on ARM Core have a RCPM module > > (Run Control and Power Management), which performs all device-level > > tasks associated with power m

Re: [PATCH 2/2] soc: nxp: Add a RCPM driver

2016-08-02 Thread Chenhui Zhao
On Mon, Aug 1, 2016 at 8:25 PM, Arnd Bergmann wrote: > On Monday, August 1, 2016 5:49:03 PM CEST Chenhui Zhao wrote: >> The NXP's QorIQ Processors based on ARM Core have a RCPM module >> (Run Control and Power Management), which performs all device-level >> tasks associ

[PATCH 1/4] powerpc/85xx: support sleep feature on QorIQ SoCs with RCPM

2015-07-31 Thread Chenhui Zhao
-by: Chenhui Zhao --- Note: This patch set is based on CPU hotplug patches. arch/powerpc/Kconfig | 3 +- arch/powerpc/platforms/85xx/Kconfig| 5 +++ arch/powerpc/platforms/85xx/Makefile | 1 + arch/powerpc/platforms/85xx/qoriq_pm.c | 59 ++ a

[PATCH 4/4] powerpc: pm: support deep sleep feature on T104x

2015-07-31 Thread Chenhui Zhao
access. This piece of code and related TLBs are prefetched in advance. Due to the different initialization code between 32-bit and 64-bit, they have separate resume entry and precedure. The feature supports 32-bit and 64-bit kernel mode. Signed-off-by: Chenhui Zhao --- arch/powerpc/include/asm

[PATCH 3/4] powerpc: pm: add EPU FSM configuration for deep sleep

2015-07-31 Thread Chenhui Zhao
precedure. This patch configure the EPU FSM preparing for deep sleep. Signed-off-by: Chenhui Zhao --- arch/powerpc/platforms/85xx/Makefile| 2 +- arch/powerpc/platforms/85xx/sleep_fsm.c | 256 arch/powerpc/platforms/85xx/sleep_fsm.h | 104 + 3 files

[PATCH 2/4] powerpc: get the physical base address of DCSR

2015-07-31 Thread Chenhui Zhao
Add get_dcsrbase() to get the physical base address of DCSR. Signed-off-by: Chenhui Zhao --- arch/powerpc/sysdev/fsl_soc.c | 31 +++ arch/powerpc/sysdev/fsl_soc.h | 1 + 2 files changed, 32 insertions(+) diff --git a/arch/powerpc/sysdev/fsl_soc.c b/arch/powerpc

Re: [PATCH] powerpc/85xx: add sleep and deep sleep support

2015-08-03 Thread Chenhui Zhao
On Sat, Aug 1, 2015 at 10:57 AM, Scott Wood wrote: On Fri, 2015-07-24 at 20:46 +0800, Chenhui Zhao wrote: +static void mpc85xx_pmc_set_wake(struct device *dev, void *enable) { int ret; + u32 value[2]; + + if (!device_may_wakeup(dev)) + return; + + if

Re: [PATCH v5] powerpc/rcpm: add RCPM driver

2015-08-03 Thread Chenhui Zhao
On Sat, Aug 1, 2015 at 8:45 AM, Scott Wood wrote: On Fri, 2015-06-26 at 15:44 +0800, yuantian.t...@freescale.com wrote: +static void rcpm_v1_set_ip_power(bool enable, u32 *mask) +{ + if (enable) + setbits32(&rcpm_v1_regs->ippdexpcr, *mask); + else + clrb

Re: [PATCH 1/3] Powerpc: mpc85xx: refactor the PM operations

2015-08-03 Thread Chenhui Zhao
On Sat, Aug 1, 2015 at 7:59 AM, Scott Wood wrote: On Fri, 2015-07-31 at 17:20 +0800, b29...@freescale.com wrote: @@ -71,7 +56,7 @@ static void mpc85xx_give_timebase(void) barrier(); tb_req = 0; - mpc85xx_timebase_freeze(1); + qoriq_pm_ops->freeze_time_base(1

Re: [PATCH 2/3] PowerPC/mpc85xx: Add hotplug support on E5500 and E500MC cores

2015-08-03 Thread Chenhui Zhao
platforms. Signed-off-by: Chenhui Zhao Signed-off-by: Tang Yuantian --- arch/powerpc/Kconfig | 2 +- arch/powerpc/include/asm/smp.h| 1 + arch/powerpc/kernel/smp.c | 5 + arch/powerpc/platforms/85xx/smp.c | 39 --- 4

Re: [PATCH 3/4] powerpc: pm: add EPU FSM configuration for deep sleep

2015-08-03 Thread Chenhui Zhao
On Sat, Aug 1, 2015 at 8:41 AM, Scott Wood wrote: On Fri, 2015-07-31 at 20:53 +0800, Chenhui Zhao wrote: In the last stage of deep sleep, software will trigger a Finite State Machine (FSM) to control the hardware precedure, such as board isolation, killing PLLs, removing power, and so on

[PATCH v4 1/6] powerpc/mm: any thread in one core can be the first to setup TLB1

2015-12-23 Thread Chenhui Zhao
On e6500, in the case of cpu hotplug, either thread in one core may be the first thread initilzing the TLB1. The subsequent threads must not setup it again. The code is derived from the comment of Scott Wood. Signed-off-by: Chenhui Zhao --- Changes for v4: * added CONFIG_BOOKE arch/powerpc