* [PATCH] ARM: OMAP4: hwmod: Fix SOFTRESET logic for OMAP4
@ 2014-02-05 15:06 ` Illia Smyrnov
0 siblings, 0 replies; 19+ messages in thread
From: Illia Smyrnov @ 2014-02-05 15:06 UTC (permalink / raw)
To: Benoît Cousson, Paul Walmsley, Tony Lindgren
Cc: Russell King, Roger Quadros, linux-omap, linux-arm-kernel,
linux-kernel, Illia Smyrnov
Commit 313a76e (ARM: OMAP2+: hwmod: Fix SOFTRESET logic) introduced
softreset bit cleaning right after set one. It is caused L3 error for
OMAP4 ISS because ISS register write occurs when ISS reset process is in
progress. Avoid this situation by cleaning softreset bit later, when reset
process is successfully finished.
Signed-off-by: Illia Smyrnov <illia.smyrnov@globallogic.com>
---
arch/arm/mach-omap2/omap_hwmod.c | 20 +++++++++++---------
1 file changed, 11 insertions(+), 9 deletions(-)
diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index 42d8188..1f33f5d 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -1947,29 +1947,31 @@ static int _ocp_softreset(struct omap_hwmod *oh)
goto dis_opt_clks;
_write_sysconfig(v, oh);
- ret = _clear_softreset(oh, &v);
- if (ret)
- goto dis_opt_clks;
-
- _write_sysconfig(v, oh);
if (oh->class->sysc->srst_udelay)
udelay(oh->class->sysc->srst_udelay);
c = _wait_softreset_complete(oh);
- if (c == MAX_MODULE_SOFTRESET_WAIT)
+ if (c == MAX_MODULE_SOFTRESET_WAIT) {
pr_warning("omap_hwmod: %s: softreset failed (waited %d usec)\n",
oh->name, MAX_MODULE_SOFTRESET_WAIT);
- else
+ ret = -ETIMEDOUT;
+ goto dis_opt_clks;
+ } else {
pr_debug("omap_hwmod: %s: softreset in %d usec\n", oh->name, c);
+ }
+
+ ret = _clear_softreset(oh, &v);
+ if (ret)
+ goto dis_opt_clks;
+
+ _write_sysconfig(v, oh);
/*
* XXX add _HWMOD_STATE_WEDGED for modules that don't come back from
* _wait_target_ready() or _reset()
*/
- ret = (c == MAX_MODULE_SOFTRESET_WAIT) ? -ETIMEDOUT : 0;
-
dis_opt_clks:
if (oh->flags & HWMOD_CONTROL_OPT_CLKS_IN_RESET)
_disable_optional_clocks(oh);
--
1.8.5.3
^ permalink raw reply related [flat|nested] 19+ messages in thread
* [PATCH] ARM: OMAP4: hwmod: Fix SOFTRESET logic for OMAP4
@ 2014-02-05 15:06 ` Illia Smyrnov
0 siblings, 0 replies; 19+ messages in thread
From: Illia Smyrnov @ 2014-02-05 15:06 UTC (permalink / raw)
To: Benoît Cousson, Paul Walmsley, Tony Lindgren
Cc: Illia Smyrnov, Russell King, linux-kernel, linux-omap,
linux-arm-kernel, Roger Quadros
Commit 313a76e (ARM: OMAP2+: hwmod: Fix SOFTRESET logic) introduced
softreset bit cleaning right after set one. It is caused L3 error for
OMAP4 ISS because ISS register write occurs when ISS reset process is in
progress. Avoid this situation by cleaning softreset bit later, when reset
process is successfully finished.
Signed-off-by: Illia Smyrnov <illia.smyrnov@globallogic.com>
---
arch/arm/mach-omap2/omap_hwmod.c | 20 +++++++++++---------
1 file changed, 11 insertions(+), 9 deletions(-)
diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index 42d8188..1f33f5d 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -1947,29 +1947,31 @@ static int _ocp_softreset(struct omap_hwmod *oh)
goto dis_opt_clks;
_write_sysconfig(v, oh);
- ret = _clear_softreset(oh, &v);
- if (ret)
- goto dis_opt_clks;
-
- _write_sysconfig(v, oh);
if (oh->class->sysc->srst_udelay)
udelay(oh->class->sysc->srst_udelay);
c = _wait_softreset_complete(oh);
- if (c == MAX_MODULE_SOFTRESET_WAIT)
+ if (c == MAX_MODULE_SOFTRESET_WAIT) {
pr_warning("omap_hwmod: %s: softreset failed (waited %d usec)\n",
oh->name, MAX_MODULE_SOFTRESET_WAIT);
- else
+ ret = -ETIMEDOUT;
+ goto dis_opt_clks;
+ } else {
pr_debug("omap_hwmod: %s: softreset in %d usec\n", oh->name, c);
+ }
+
+ ret = _clear_softreset(oh, &v);
+ if (ret)
+ goto dis_opt_clks;
+
+ _write_sysconfig(v, oh);
/*
* XXX add _HWMOD_STATE_WEDGED for modules that don't come back from
* _wait_target_ready() or _reset()
*/
- ret = (c == MAX_MODULE_SOFTRESET_WAIT) ? -ETIMEDOUT : 0;
-
dis_opt_clks:
if (oh->flags & HWMOD_CONTROL_OPT_CLKS_IN_RESET)
_disable_optional_clocks(oh);
--
1.8.5.3
^ permalink raw reply related [flat|nested] 19+ messages in thread
* [PATCH] ARM: OMAP4: hwmod: Fix SOFTRESET logic for OMAP4
@ 2014-02-05 15:06 ` Illia Smyrnov
0 siblings, 0 replies; 19+ messages in thread
From: Illia Smyrnov @ 2014-02-05 15:06 UTC (permalink / raw)
To: linux-arm-kernel
Commit 313a76e (ARM: OMAP2+: hwmod: Fix SOFTRESET logic) introduced
softreset bit cleaning right after set one. It is caused L3 error for
OMAP4 ISS because ISS register write occurs when ISS reset process is in
progress. Avoid this situation by cleaning softreset bit later, when reset
process is successfully finished.
Signed-off-by: Illia Smyrnov <illia.smyrnov@globallogic.com>
---
arch/arm/mach-omap2/omap_hwmod.c | 20 +++++++++++---------
1 file changed, 11 insertions(+), 9 deletions(-)
diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index 42d8188..1f33f5d 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -1947,29 +1947,31 @@ static int _ocp_softreset(struct omap_hwmod *oh)
goto dis_opt_clks;
_write_sysconfig(v, oh);
- ret = _clear_softreset(oh, &v);
- if (ret)
- goto dis_opt_clks;
-
- _write_sysconfig(v, oh);
if (oh->class->sysc->srst_udelay)
udelay(oh->class->sysc->srst_udelay);
c = _wait_softreset_complete(oh);
- if (c == MAX_MODULE_SOFTRESET_WAIT)
+ if (c == MAX_MODULE_SOFTRESET_WAIT) {
pr_warning("omap_hwmod: %s: softreset failed (waited %d usec)\n",
oh->name, MAX_MODULE_SOFTRESET_WAIT);
- else
+ ret = -ETIMEDOUT;
+ goto dis_opt_clks;
+ } else {
pr_debug("omap_hwmod: %s: softreset in %d usec\n", oh->name, c);
+ }
+
+ ret = _clear_softreset(oh, &v);
+ if (ret)
+ goto dis_opt_clks;
+
+ _write_sysconfig(v, oh);
/*
* XXX add _HWMOD_STATE_WEDGED for modules that don't come back from
* _wait_target_ready() or _reset()
*/
- ret = (c == MAX_MODULE_SOFTRESET_WAIT) ? -ETIMEDOUT : 0;
-
dis_opt_clks:
if (oh->flags & HWMOD_CONTROL_OPT_CLKS_IN_RESET)
_disable_optional_clocks(oh);
--
1.8.5.3
^ permalink raw reply related [flat|nested] 19+ messages in thread
* Re: [PATCH] ARM: OMAP4: hwmod: Fix SOFTRESET logic for OMAP4
2014-02-05 15:06 ` Illia Smyrnov
(?)
@ 2014-02-05 17:05 ` Grygorii Strashko
-1 siblings, 0 replies; 19+ messages in thread
From: Grygorii Strashko @ 2014-02-05 17:05 UTC (permalink / raw)
To: Illia Smyrnov, Benoît Cousson, Paul Walmsley, Tony Lindgren
Cc: Russell King, linux-kernel, linux-omap, linux-arm-kernel,
Roger Quadros, Menon, Nishanth
Hi All,
On 02/05/2014 05:06 PM, Illia Smyrnov wrote:
> Commit 313a76e (ARM: OMAP2+: hwmod: Fix SOFTRESET logic) introduced
> softreset bit cleaning right after set one. It is caused L3 error for
> OMAP4 ISS because ISS register write occurs when ISS reset process is in
> progress. Avoid this situation by cleaning softreset bit later, when reset
> process is successfully finished.
I'd like to mention that this issue has been caught while upgrading
custom Linux Kernel 3.4 to the last Stable Kernel linux-3.4.y.
So, the same OMAP4+ functionality can be broken in all Stable trees
where commit "ARM: OMAP2+: hwmod: Fix SOFTRESET logic" was merged to.
On OMAP4+ we should always try to wait until IP reset is finished before proceed.
Reviewed-by: "Grygorii Strashko <grygorii.strashko@ti.com>"
Error log example (k3.4):
[ 5766.575347] ------------[ cut here ]------------
[ 5766.580749] WARNING: at arch/arm/mach-omap2/omap_l3_noc.c:97 l3_interrupt_handler+0xc0/0x170()
[ 5766.590209] L3 standard error: TARGET:ISS at address 0x10
[ 5766.596435] Modules linked in: wlcore_sdio(O) wl18xx(O) wl12xx(O) wlcore(O) mac80211(O) pvrsrvkm_sgx544_112(O) cfg80211(O) compat(O)
[ 5766.611022] Backtrace:
[ 5766.614013] [<c00180ec>] (dump_backtrace+0x0/0x10c) from [<c065d448>] (dump_stack+0x18/0x1c)
[ 5766.623413] r6:c003a19c r5:00000009 r4:c0921d80 r3:c0982f10
[ 5766.630340] [<c065d430>] (dump_stack+0x0/0x1c) from [<c0046cf4>] (warn_slowpath_common+0x54/0x6c)
[ 5766.640258] [<c0046ca0>] (warn_slowpath_common+0x0/0x6c) from [<c0046db0>] (warn_slowpath_fmt+0x38/0x40)
[ 5766.650787] r8:00000000 r7:00000018 r6:c06712c4 r5:80080001 r4:e08f4400
[ 5766.658630] r3:00000009
[ 5766.661926] [<c0046d78>] (warn_slowpath_fmt+0x0/0x40) from [<c003a19c>] (l3_interrupt_handler+0xc0/0x170)
[ 5766.672546] r3:c080790c r2:c0807858
[ 5766.676910] [<c003a0dc>] (l3_interrupt_handler+0x0/0x170) from [<c00a8bc0>] (handle_irq_event_percpu+0x64/0x2b0)
[ 5766.688201] r8:00000000 r7:0000002a r6:0000002a r5:c0924190 r4:d6cbeac0
[ 5766.696533] [<c00a8b5c>] (handle_irq_event_percpu+0x0/0x2b0) from [<c00a8e50>] (handle_irq_event+0x44/0x64)
[ 5766.707244] [<c00a8e0c>] (handle_irq_event+0x0/0x64) from [<c00abb80>] (handle_fasteoi_irq+0xa0/0x160)
[ 5766.717620] r6:c0920000 r5:c0924190 r4:c0924140 r3:00000000
[ 5766.724639] [<c00abae0>] (handle_fasteoi_irq+0x0/0x160) from [<c00a83ac>] (generic_handle_irq+0x30/0x44)
[ 5766.735198] r5:c091e538 r4:c0946d40
[ 5766.739562] [<c00a837c>] (generic_handle_irq+0x0/0x44) from [<c0014b88>] (handle_IRQ+0x54/0xb8)
[ 5766.749267] [<c0014b34>] (handle_IRQ+0x0/0xb8) from [<c00084d0>] (gic_handle_irq+0x2c/0x60)
[ 5766.758453] r8:00000000 r7:c0921ed4 r6:c0921ea0 r5:c0945a00 r4:e0802100
[ 5766.766448] r3:c008aeb8
[ 5766.769744] [<c00084a4>] (gic_handle_irq+0x0/0x60) from [<c06678c0>] (__irq_svc+0x40/0x70)
[ 5766.778991] Exception stack(0xc0921ea0 to 0xc0921ee8)
[ 5766.784637] 1ea0: c0921ee8 000be65e a237f8b7 0000053e a2378182 0000053e c1858498 00000000
[ 5766.793762] 1ec0: 00000000 c095645c c0a3350c c0921f14 00001686 c0921ee8 c008aeb8 c042e5b4
[ 5766.802886] 1ee0: 60070013 ffffffff
[ 5766.806823] r6:ffffffff r5:60070013 r4:c042e5b4 r3:c008aeb8
[ 5766.813903] [<c042e564>] (cpuidle_wrap_enter+0x0/0x9c) from [<c042db94>] (cpuidle_enter_tk+0x18/0x1c)
[ 5766.824035] r7:c09c35b4 r6:c1858498 r5:00000000 r4:c1858498
[ 5766.830963] [<c042db7c>] (cpuidle_enter_tk+0x0/0x1c) from [<c042e0b0>] (cpuidle_enter_state+0x1c/0x78)
[ 5766.841339] [<c042e094>] (cpuidle_enter_state+0x0/0x78) from [<c042e1ec>] (cpuidle_idle_call+0xe0/0x31c)
[ 5766.851898] r6:c0920000 r5:00000000 r4:c1858498 r3:0000004c
[ 5766.858825] [<c042e10c>] (cpuidle_idle_call+0x0/0x31c) from [<c00152b4>] (cpu_idle+0xa4/0x10c)
[ 5766.868438] [<c0015210>] (cpu_idle+0x0/0x10c) from [<c063ce50>] (rest_init+0x74/0x8c)
[ 5766.877227] [<c063cddc>] (rest_init+0x0/0x8c) from [<c08c7864>] (start_kernel+0x2b4/0x304)
[ 5766.886352] r4:c0946b20 r3:c0982f10
[ 5766.890808] [<c08c75b0>] (start_kernel+0x0/0x304) from [<80008044>] (0x80008044)
[ 5766.898986] Board Information:
[ 5766.898986] Revision : 20edb4
[ 5766.899017] Serial : 0000000000000000
[ 5766.899017] SoC Information:
[ 5766.899017] CPU : OMAP4470
[ 5766.899017] Rev : ES1.0
[ 5766.899047] Type : HS
[ 5766.899047] Production ID: 0002B975-000000CC
[ 5766.899047] Die ID : 76080000-30002FFF-01518C70-0D00F007
[ 5766.899047]
[ 5766.935028] ---[ end trace 5f7d6da5db258915 ]---
[ 5766.948150] virtio_rpmsg_bus virtio1: destroying channel rpmsg-resmgr addr 0x66
[ 5767.098541] virtio_rpmsg_bus virtio1: creating channel rpmsg-resmgr addr 0x66
[ 5769.519683] ------------[ cut here ]------------
[ 5769.524749] WARNING: at arch/arm/mach-omap2/omap_l3_noc.c:97 l3_interrupt_handler+0xc0/0x170()
[ 5769.534149] L3 standard error: TARGET:ISS at address 0x10
[ 5769.540100] Modules linked in: wlcore_sdio(O) wl18xx(O) wl12xx(O) wlcore(O) mac80211(O) pvrsrvkm_sgx544_112(O) cfg80211(O) compat(O)
[ 5769.553802] Backtrace:
[ 5769.556610] [<c00180ec>] (dump_backtrace+0x0/0x10c) from [<c065d448>] (dump_stack+0x18/0x1c)
[ 5769.565734] r6:c003a19c r5:00000009 r4:ca453a68 r3:c0982f10
[ 5769.572296] [<c065d430>] (dump_stack+0x0/0x1c) from [<c0046cf4>] (warn_slowpath_common+0x54/0x6c)
[ 5769.581970] [<c0046ca0>] (warn_slowpath_common+0x0/0x6c) from [<c0046db0>] (warn_slowpath_fmt+0x38/0x40)
[ 5769.592285] r8:00000000 r7:00000018 r6:c06712c4 r5:80080001 r4:e08f4400
[ 5769.599700] r3:00000009
[ 5769.602783] [<c0046d78>] (warn_slowpath_fmt+0x0/0x40) from [<c003a19c>] (l3_interrupt_handler+0xc0/0x170)
[ 5769.613189] r3:c080790c r2:c0807858
[ 5769.617340] [<c003a0dc>] (l3_interrupt_handler+0x0/0x170) from [<c00a8bc0>] (handle_irq_event_percpu+0x64/0x2b0)
[ 5769.628356] r8:00000000 r7:0000002a r6:0000002a r5:c0924190 r4:d6cbeac0
[ 5769.636108] [<c00a8b5c>] (handle_irq_event_percpu+0x0/0x2b0) from [<c00a8e50>] (handle_irq_event+0x44/0x64)
[ 5769.646728] [<c00a8e0c>] (handle_irq_event+0x0/0x64) from [<c00abb80>] (handle_fasteoi_irq+0xa0/0x160)
[ 5769.656860] r6:ca452000 r5:c0924190 r4:c0924140 r3:00000000
[ 5769.663360] [<c00abae0>] (handle_fasteoi_irq+0x0/0x160) from [<c00a83ac>] (generic_handle_irq+0x30/0x44)
[ 5769.673675] r5:c091e538 r4:c0946d40
[ 5769.677764] [<c00a837c>] (generic_handle_irq+0x0/0x44) from [<c0014b88>] (handle_IRQ+0x54/0xb8)
[ 5769.687255] [<c0014b34>] (handle_IRQ+0x0/0xb8) from [<c00084d0>] (gic_handle_irq+0x2c/0x60)
[ 5769.696380] r8:d6cf3f40 r7:ca453bbc r6:ca453b88 r5:c0945a00 r4:e0802100
[ 5769.703857] r3:c0029070
[ 5769.706909] [<c00084a4>] (gic_handle_irq+0x0/0x60) from [<c06678c0>] (__irq_svc+0x40/0x70)
[ 5769.715881] Exception stack(0xca453b88 to 0xca453bd0)
[ 5769.721435] 3b80: c0964d98 a0000013 00000010 00000000 00000000 c0964d98
[ 5769.730377] 3ba0: a0000013 d6cf3f40 d6cf3f40 3b9aca00 00000000 ca453bdc ca453be0 ca453bd0
[ 5769.739227] 3bc0: c0029070 c0666d68 60000013 ffffffff
[ 5769.744781] r6:ffffffff r5:60000013 r4:c0666d68 r3:c0029070
[ 5769.751281] [<c0666d44>] (_raw_spin_unlock_irqrestore+0x0/0x50) from [<c0029070>] (omap_hwmod_reset+0x3c/0x4c)
[ 5769.762176] [<c0029034>] (omap_hwmod_reset+0x0/0x4c) from [<c0024d30>] (omap_cam_deactivate+0x30/0x48)
[ 5769.772308] r6:d6cf3fc0 r5:d6cf3fc0 r4:00000001 r3:d6cf3f80
[ 5769.778869] [<c0024d00>] (omap_cam_deactivate+0x0/0x48) from [<c0040bc4>] (_omap_device_deactivate+0xb4/0x14c)
[ 5769.789703] r5:d6cf1608 r4:d6cf3fc0
[ 5769.793853] [<c0040b10>] (_omap_device_deactivate+0x0/0x14c) from [<c0041434>] (omap_device_idle+0x30/0x5c)
[ 5769.804473] [<c0041404>] (omap_device_idle+0x0/0x5c) from [<c0041520>] (omap_device_runtime_suspend+0x24/0x2c)
[ 5769.815277] r4:00000000 r3:00000000
[ 5769.819396] [<c00414fc>] (omap_device_runtime_suspend+0x0/0x2c) from [<c02f1d5c>] (__rpm_callback+0x3c/0x78)
[ 5769.830078] r5:d6cf1668 r4:d6cf1608
[ 5769.834167] [<c02f1d20>] (__rpm_callback+0x0/0x78) from [<c02f2270>] (rpm_suspend+0x254/0x728)
[ 5769.843566] r6:00000000 r5:00000000 r4:d6cf1608 r3:c09827ec
[ 5769.850067] [<c02f201c>] (rpm_suspend+0x0/0x728) from [<c02f385c>] (__pm_runtime_suspend+0x60/0x84)
[ 5769.859924] [<c02f37fc>] (__pm_runtime_suspend+0x0/0x84) from [<c02eea28>] (pm_generic_runtime_idle+0x4c/0x58)
[ 5769.870819] r7:60000013 r6:c0040978 r5:d6cf1668 r4:d6cf1608
[ 5769.877319] [<c02ee9dc>] (pm_generic_runtime_idle+0x0/0x58) from [<c0040988>] (_od_runtime_idle+0x10/0x14)
[ 5769.887817] r4:d6cf1608 r3:00000000
[ 5769.891967] [<c0040978>] (_od_runtime_idle+0x0/0x14) from [<c02f1d5c>] (__rpm_callback+0x3c/0x78)
[ 5769.901580] [<c02f1d20>] (__rpm_callback+0x0/0x78) from [<c02f28c0>] (rpm_idle+0x100/0x290)
[ 5769.910675] r6:00000000 r5:00000004 r4:d6cf1608 r3:00000088
[ 5769.917236] [<c02f27c0>] (rpm_idle+0x0/0x290) from [<c02f2b2c>] (__pm_runtime_idle+0x60/0x84)
[ 5769.926452] r8:ce7b2c00 r7:60000013 r6:d6cf1668 r5:00000004 r4:d6cf1608
[ 5769.933959] r3:d6cf16ec
[ 5769.937042] [<c02f2acc>] (__pm_runtime_idle+0x0/0x84) from [<c0473100>] (_device_release+0x34/0x38)
[ 5769.946899] r7:cf2a3288 r6:ce7b2c08 r5:d6cf1608 r4:d5f9b440
[ 5769.953460] [<c04730cc>] (_device_release+0x0/0x38) from [<c0473b74>] (rprm_iss_release+0x10/0x38)
[ 5769.963165] r5:ce7b2c08 r4:cf2a32c0
[ 5769.967315] [<c0473b64>] (rprm_iss_release+0x0/0x38) from [<c0471f90>] (_resource_release+0x40/0xdc)
[ 5769.977172] r4:cf2a32c0 r3:c0473b64
[ 5769.981323] [<c0471f50>] (_resource_release+0x0/0xdc) from [<c04722f8>] (rprm_cb+0x270/0x680)
[ 5769.990631] r6:00000000 r5:ce7b2c08 r4:cf2a32a0 r3:00000000
[ 5769.997131] [<c0472088>] (rprm_cb+0x0/0x680) from [<c0470e50>] (rpmsg_recv_done+0x108/0x220)
[ 5770.006347] [<c0470d48>] (rpmsg_recv_done+0x0/0x220) from [<c02ab2f8>] (vring_interrupt+0x40/0x58)
[ 5770.016113] [<c02ab2b8>] (vring_interrupt+0x0/0x58) from [<c046f728>] (rproc_vq_interrupt+0x3c/0x50)
[ 5770.026000] [<c046f6ec>] (rproc_vq_interrupt+0x0/0x50) from [<c04707c4>] (_vq_interrupt_thread+0x1c/0x44)
[ 5770.036437] [<c04707a8>] (_vq_interrupt_thread+0x0/0x44) from [<c0066764>] (kthread+0x90/0x9c)
[ 5770.045806] r5:cf2e9cc0 r4:cf937e44
[ 5770.049896] [<c00666d4>] (kthread+0x0/0x9c) from [<c004ac04>] (do_exit+0x0/0x7b4)
[ 5770.058074] r6:c004ac04 r5:c00666d4 r4:cf937e44
[ 5770.063385] Board Information:
[ 5770.063385] Revision : 20edb4
[ 5770.063385] Serial : 0000000000000000
[ 5770.063385] SoC Information:
[ 5770.063385] CPU : OMAP4470
[ 5770.063385] Rev : ES1.0
[ 5770.063415] Type : HS
[ 5770.063415] Production ID: 0002B975-000000CC
[ 5770.063415] Die ID : 76080000-30002FFF-01518C70-0D00F007
[ 5770.063415]
[ 5770.098297] ---[ end trace 5f7d6da5db258916 ]---
[ 5770.110778] virtio_rpmsg_bus virtio1: destroying channel rpmsg-resmgr addr 0x66
[ 5770.266723] virtio_rpmsg_bus virtio1: creating channel rpmsg-resmgr addr 0x66
^ permalink raw reply [flat|nested] 19+ messages in thread
* Re: [PATCH] ARM: OMAP4: hwmod: Fix SOFTRESET logic for OMAP4
@ 2014-02-05 17:05 ` Grygorii Strashko
0 siblings, 0 replies; 19+ messages in thread
From: Grygorii Strashko @ 2014-02-05 17:05 UTC (permalink / raw)
To: Illia Smyrnov, Benoît Cousson, Paul Walmsley, Tony Lindgren
Cc: Menon, Nishanth, Russell King, linux-kernel, linux-omap,
linux-arm-kernel, Roger Quadros
Hi All,
On 02/05/2014 05:06 PM, Illia Smyrnov wrote:
> Commit 313a76e (ARM: OMAP2+: hwmod: Fix SOFTRESET logic) introduced
> softreset bit cleaning right after set one. It is caused L3 error for
> OMAP4 ISS because ISS register write occurs when ISS reset process is in
> progress. Avoid this situation by cleaning softreset bit later, when reset
> process is successfully finished.
I'd like to mention that this issue has been caught while upgrading
custom Linux Kernel 3.4 to the last Stable Kernel linux-3.4.y.
So, the same OMAP4+ functionality can be broken in all Stable trees
where commit "ARM: OMAP2+: hwmod: Fix SOFTRESET logic" was merged to.
On OMAP4+ we should always try to wait until IP reset is finished before proceed.
Reviewed-by: "Grygorii Strashko <grygorii.strashko@ti.com>"
Error log example (k3.4):
[ 5766.575347] ------------[ cut here ]------------
[ 5766.580749] WARNING: at arch/arm/mach-omap2/omap_l3_noc.c:97 l3_interrupt_handler+0xc0/0x170()
[ 5766.590209] L3 standard error: TARGET:ISS at address 0x10
[ 5766.596435] Modules linked in: wlcore_sdio(O) wl18xx(O) wl12xx(O) wlcore(O) mac80211(O) pvrsrvkm_sgx544_112(O) cfg80211(O) compat(O)
[ 5766.611022] Backtrace:
[ 5766.614013] [<c00180ec>] (dump_backtrace+0x0/0x10c) from [<c065d448>] (dump_stack+0x18/0x1c)
[ 5766.623413] r6:c003a19c r5:00000009 r4:c0921d80 r3:c0982f10
[ 5766.630340] [<c065d430>] (dump_stack+0x0/0x1c) from [<c0046cf4>] (warn_slowpath_common+0x54/0x6c)
[ 5766.640258] [<c0046ca0>] (warn_slowpath_common+0x0/0x6c) from [<c0046db0>] (warn_slowpath_fmt+0x38/0x40)
[ 5766.650787] r8:00000000 r7:00000018 r6:c06712c4 r5:80080001 r4:e08f4400
[ 5766.658630] r3:00000009
[ 5766.661926] [<c0046d78>] (warn_slowpath_fmt+0x0/0x40) from [<c003a19c>] (l3_interrupt_handler+0xc0/0x170)
[ 5766.672546] r3:c080790c r2:c0807858
[ 5766.676910] [<c003a0dc>] (l3_interrupt_handler+0x0/0x170) from [<c00a8bc0>] (handle_irq_event_percpu+0x64/0x2b0)
[ 5766.688201] r8:00000000 r7:0000002a r6:0000002a r5:c0924190 r4:d6cbeac0
[ 5766.696533] [<c00a8b5c>] (handle_irq_event_percpu+0x0/0x2b0) from [<c00a8e50>] (handle_irq_event+0x44/0x64)
[ 5766.707244] [<c00a8e0c>] (handle_irq_event+0x0/0x64) from [<c00abb80>] (handle_fasteoi_irq+0xa0/0x160)
[ 5766.717620] r6:c0920000 r5:c0924190 r4:c0924140 r3:00000000
[ 5766.724639] [<c00abae0>] (handle_fasteoi_irq+0x0/0x160) from [<c00a83ac>] (generic_handle_irq+0x30/0x44)
[ 5766.735198] r5:c091e538 r4:c0946d40
[ 5766.739562] [<c00a837c>] (generic_handle_irq+0x0/0x44) from [<c0014b88>] (handle_IRQ+0x54/0xb8)
[ 5766.749267] [<c0014b34>] (handle_IRQ+0x0/0xb8) from [<c00084d0>] (gic_handle_irq+0x2c/0x60)
[ 5766.758453] r8:00000000 r7:c0921ed4 r6:c0921ea0 r5:c0945a00 r4:e0802100
[ 5766.766448] r3:c008aeb8
[ 5766.769744] [<c00084a4>] (gic_handle_irq+0x0/0x60) from [<c06678c0>] (__irq_svc+0x40/0x70)
[ 5766.778991] Exception stack(0xc0921ea0 to 0xc0921ee8)
[ 5766.784637] 1ea0: c0921ee8 000be65e a237f8b7 0000053e a2378182 0000053e c1858498 00000000
[ 5766.793762] 1ec0: 00000000 c095645c c0a3350c c0921f14 00001686 c0921ee8 c008aeb8 c042e5b4
[ 5766.802886] 1ee0: 60070013 ffffffff
[ 5766.806823] r6:ffffffff r5:60070013 r4:c042e5b4 r3:c008aeb8
[ 5766.813903] [<c042e564>] (cpuidle_wrap_enter+0x0/0x9c) from [<c042db94>] (cpuidle_enter_tk+0x18/0x1c)
[ 5766.824035] r7:c09c35b4 r6:c1858498 r5:00000000 r4:c1858498
[ 5766.830963] [<c042db7c>] (cpuidle_enter_tk+0x0/0x1c) from [<c042e0b0>] (cpuidle_enter_state+0x1c/0x78)
[ 5766.841339] [<c042e094>] (cpuidle_enter_state+0x0/0x78) from [<c042e1ec>] (cpuidle_idle_call+0xe0/0x31c)
[ 5766.851898] r6:c0920000 r5:00000000 r4:c1858498 r3:0000004c
[ 5766.858825] [<c042e10c>] (cpuidle_idle_call+0x0/0x31c) from [<c00152b4>] (cpu_idle+0xa4/0x10c)
[ 5766.868438] [<c0015210>] (cpu_idle+0x0/0x10c) from [<c063ce50>] (rest_init+0x74/0x8c)
[ 5766.877227] [<c063cddc>] (rest_init+0x0/0x8c) from [<c08c7864>] (start_kernel+0x2b4/0x304)
[ 5766.886352] r4:c0946b20 r3:c0982f10
[ 5766.890808] [<c08c75b0>] (start_kernel+0x0/0x304) from [<80008044>] (0x80008044)
[ 5766.898986] Board Information:
[ 5766.898986] Revision : 20edb4
[ 5766.899017] Serial : 0000000000000000
[ 5766.899017] SoC Information:
[ 5766.899017] CPU : OMAP4470
[ 5766.899017] Rev : ES1.0
[ 5766.899047] Type : HS
[ 5766.899047] Production ID: 0002B975-000000CC
[ 5766.899047] Die ID : 76080000-30002FFF-01518C70-0D00F007
[ 5766.899047]
[ 5766.935028] ---[ end trace 5f7d6da5db258915 ]---
[ 5766.948150] virtio_rpmsg_bus virtio1: destroying channel rpmsg-resmgr addr 0x66
[ 5767.098541] virtio_rpmsg_bus virtio1: creating channel rpmsg-resmgr addr 0x66
[ 5769.519683] ------------[ cut here ]------------
[ 5769.524749] WARNING: at arch/arm/mach-omap2/omap_l3_noc.c:97 l3_interrupt_handler+0xc0/0x170()
[ 5769.534149] L3 standard error: TARGET:ISS at address 0x10
[ 5769.540100] Modules linked in: wlcore_sdio(O) wl18xx(O) wl12xx(O) wlcore(O) mac80211(O) pvrsrvkm_sgx544_112(O) cfg80211(O) compat(O)
[ 5769.553802] Backtrace:
[ 5769.556610] [<c00180ec>] (dump_backtrace+0x0/0x10c) from [<c065d448>] (dump_stack+0x18/0x1c)
[ 5769.565734] r6:c003a19c r5:00000009 r4:ca453a68 r3:c0982f10
[ 5769.572296] [<c065d430>] (dump_stack+0x0/0x1c) from [<c0046cf4>] (warn_slowpath_common+0x54/0x6c)
[ 5769.581970] [<c0046ca0>] (warn_slowpath_common+0x0/0x6c) from [<c0046db0>] (warn_slowpath_fmt+0x38/0x40)
[ 5769.592285] r8:00000000 r7:00000018 r6:c06712c4 r5:80080001 r4:e08f4400
[ 5769.599700] r3:00000009
[ 5769.602783] [<c0046d78>] (warn_slowpath_fmt+0x0/0x40) from [<c003a19c>] (l3_interrupt_handler+0xc0/0x170)
[ 5769.613189] r3:c080790c r2:c0807858
[ 5769.617340] [<c003a0dc>] (l3_interrupt_handler+0x0/0x170) from [<c00a8bc0>] (handle_irq_event_percpu+0x64/0x2b0)
[ 5769.628356] r8:00000000 r7:0000002a r6:0000002a r5:c0924190 r4:d6cbeac0
[ 5769.636108] [<c00a8b5c>] (handle_irq_event_percpu+0x0/0x2b0) from [<c00a8e50>] (handle_irq_event+0x44/0x64)
[ 5769.646728] [<c00a8e0c>] (handle_irq_event+0x0/0x64) from [<c00abb80>] (handle_fasteoi_irq+0xa0/0x160)
[ 5769.656860] r6:ca452000 r5:c0924190 r4:c0924140 r3:00000000
[ 5769.663360] [<c00abae0>] (handle_fasteoi_irq+0x0/0x160) from [<c00a83ac>] (generic_handle_irq+0x30/0x44)
[ 5769.673675] r5:c091e538 r4:c0946d40
[ 5769.677764] [<c00a837c>] (generic_handle_irq+0x0/0x44) from [<c0014b88>] (handle_IRQ+0x54/0xb8)
[ 5769.687255] [<c0014b34>] (handle_IRQ+0x0/0xb8) from [<c00084d0>] (gic_handle_irq+0x2c/0x60)
[ 5769.696380] r8:d6cf3f40 r7:ca453bbc r6:ca453b88 r5:c0945a00 r4:e0802100
[ 5769.703857] r3:c0029070
[ 5769.706909] [<c00084a4>] (gic_handle_irq+0x0/0x60) from [<c06678c0>] (__irq_svc+0x40/0x70)
[ 5769.715881] Exception stack(0xca453b88 to 0xca453bd0)
[ 5769.721435] 3b80: c0964d98 a0000013 00000010 00000000 00000000 c0964d98
[ 5769.730377] 3ba0: a0000013 d6cf3f40 d6cf3f40 3b9aca00 00000000 ca453bdc ca453be0 ca453bd0
[ 5769.739227] 3bc0: c0029070 c0666d68 60000013 ffffffff
[ 5769.744781] r6:ffffffff r5:60000013 r4:c0666d68 r3:c0029070
[ 5769.751281] [<c0666d44>] (_raw_spin_unlock_irqrestore+0x0/0x50) from [<c0029070>] (omap_hwmod_reset+0x3c/0x4c)
[ 5769.762176] [<c0029034>] (omap_hwmod_reset+0x0/0x4c) from [<c0024d30>] (omap_cam_deactivate+0x30/0x48)
[ 5769.772308] r6:d6cf3fc0 r5:d6cf3fc0 r4:00000001 r3:d6cf3f80
[ 5769.778869] [<c0024d00>] (omap_cam_deactivate+0x0/0x48) from [<c0040bc4>] (_omap_device_deactivate+0xb4/0x14c)
[ 5769.789703] r5:d6cf1608 r4:d6cf3fc0
[ 5769.793853] [<c0040b10>] (_omap_device_deactivate+0x0/0x14c) from [<c0041434>] (omap_device_idle+0x30/0x5c)
[ 5769.804473] [<c0041404>] (omap_device_idle+0x0/0x5c) from [<c0041520>] (omap_device_runtime_suspend+0x24/0x2c)
[ 5769.815277] r4:00000000 r3:00000000
[ 5769.819396] [<c00414fc>] (omap_device_runtime_suspend+0x0/0x2c) from [<c02f1d5c>] (__rpm_callback+0x3c/0x78)
[ 5769.830078] r5:d6cf1668 r4:d6cf1608
[ 5769.834167] [<c02f1d20>] (__rpm_callback+0x0/0x78) from [<c02f2270>] (rpm_suspend+0x254/0x728)
[ 5769.843566] r6:00000000 r5:00000000 r4:d6cf1608 r3:c09827ec
[ 5769.850067] [<c02f201c>] (rpm_suspend+0x0/0x728) from [<c02f385c>] (__pm_runtime_suspend+0x60/0x84)
[ 5769.859924] [<c02f37fc>] (__pm_runtime_suspend+0x0/0x84) from [<c02eea28>] (pm_generic_runtime_idle+0x4c/0x58)
[ 5769.870819] r7:60000013 r6:c0040978 r5:d6cf1668 r4:d6cf1608
[ 5769.877319] [<c02ee9dc>] (pm_generic_runtime_idle+0x0/0x58) from [<c0040988>] (_od_runtime_idle+0x10/0x14)
[ 5769.887817] r4:d6cf1608 r3:00000000
[ 5769.891967] [<c0040978>] (_od_runtime_idle+0x0/0x14) from [<c02f1d5c>] (__rpm_callback+0x3c/0x78)
[ 5769.901580] [<c02f1d20>] (__rpm_callback+0x0/0x78) from [<c02f28c0>] (rpm_idle+0x100/0x290)
[ 5769.910675] r6:00000000 r5:00000004 r4:d6cf1608 r3:00000088
[ 5769.917236] [<c02f27c0>] (rpm_idle+0x0/0x290) from [<c02f2b2c>] (__pm_runtime_idle+0x60/0x84)
[ 5769.926452] r8:ce7b2c00 r7:60000013 r6:d6cf1668 r5:00000004 r4:d6cf1608
[ 5769.933959] r3:d6cf16ec
[ 5769.937042] [<c02f2acc>] (__pm_runtime_idle+0x0/0x84) from [<c0473100>] (_device_release+0x34/0x38)
[ 5769.946899] r7:cf2a3288 r6:ce7b2c08 r5:d6cf1608 r4:d5f9b440
[ 5769.953460] [<c04730cc>] (_device_release+0x0/0x38) from [<c0473b74>] (rprm_iss_release+0x10/0x38)
[ 5769.963165] r5:ce7b2c08 r4:cf2a32c0
[ 5769.967315] [<c0473b64>] (rprm_iss_release+0x0/0x38) from [<c0471f90>] (_resource_release+0x40/0xdc)
[ 5769.977172] r4:cf2a32c0 r3:c0473b64
[ 5769.981323] [<c0471f50>] (_resource_release+0x0/0xdc) from [<c04722f8>] (rprm_cb+0x270/0x680)
[ 5769.990631] r6:00000000 r5:ce7b2c08 r4:cf2a32a0 r3:00000000
[ 5769.997131] [<c0472088>] (rprm_cb+0x0/0x680) from [<c0470e50>] (rpmsg_recv_done+0x108/0x220)
[ 5770.006347] [<c0470d48>] (rpmsg_recv_done+0x0/0x220) from [<c02ab2f8>] (vring_interrupt+0x40/0x58)
[ 5770.016113] [<c02ab2b8>] (vring_interrupt+0x0/0x58) from [<c046f728>] (rproc_vq_interrupt+0x3c/0x50)
[ 5770.026000] [<c046f6ec>] (rproc_vq_interrupt+0x0/0x50) from [<c04707c4>] (_vq_interrupt_thread+0x1c/0x44)
[ 5770.036437] [<c04707a8>] (_vq_interrupt_thread+0x0/0x44) from [<c0066764>] (kthread+0x90/0x9c)
[ 5770.045806] r5:cf2e9cc0 r4:cf937e44
[ 5770.049896] [<c00666d4>] (kthread+0x0/0x9c) from [<c004ac04>] (do_exit+0x0/0x7b4)
[ 5770.058074] r6:c004ac04 r5:c00666d4 r4:cf937e44
[ 5770.063385] Board Information:
[ 5770.063385] Revision : 20edb4
[ 5770.063385] Serial : 0000000000000000
[ 5770.063385] SoC Information:
[ 5770.063385] CPU : OMAP4470
[ 5770.063385] Rev : ES1.0
[ 5770.063415] Type : HS
[ 5770.063415] Production ID: 0002B975-000000CC
[ 5770.063415] Die ID : 76080000-30002FFF-01518C70-0D00F007
[ 5770.063415]
[ 5770.098297] ---[ end trace 5f7d6da5db258916 ]---
[ 5770.110778] virtio_rpmsg_bus virtio1: destroying channel rpmsg-resmgr addr 0x66
[ 5770.266723] virtio_rpmsg_bus virtio1: creating channel rpmsg-resmgr addr 0x66
^ permalink raw reply [flat|nested] 19+ messages in thread
* [PATCH] ARM: OMAP4: hwmod: Fix SOFTRESET logic for OMAP4
@ 2014-02-05 17:05 ` Grygorii Strashko
0 siblings, 0 replies; 19+ messages in thread
From: Grygorii Strashko @ 2014-02-05 17:05 UTC (permalink / raw)
To: linux-arm-kernel
Hi All,
On 02/05/2014 05:06 PM, Illia Smyrnov wrote:
> Commit 313a76e (ARM: OMAP2+: hwmod: Fix SOFTRESET logic) introduced
> softreset bit cleaning right after set one. It is caused L3 error for
> OMAP4 ISS because ISS register write occurs when ISS reset process is in
> progress. Avoid this situation by cleaning softreset bit later, when reset
> process is successfully finished.
I'd like to mention that this issue has been caught while upgrading
custom Linux Kernel 3.4 to the last Stable Kernel linux-3.4.y.
So, the same OMAP4+ functionality can be broken in all Stable trees
where commit "ARM: OMAP2+: hwmod: Fix SOFTRESET logic" was merged to.
On OMAP4+ we should always try to wait until IP reset is finished before proceed.
Reviewed-by: "Grygorii Strashko <grygorii.strashko@ti.com>"
Error log example (k3.4):
[ 5766.575347] ------------[ cut here ]------------
[ 5766.580749] WARNING: at arch/arm/mach-omap2/omap_l3_noc.c:97 l3_interrupt_handler+0xc0/0x170()
[ 5766.590209] L3 standard error: TARGET:ISS at address 0x10
[ 5766.596435] Modules linked in: wlcore_sdio(O) wl18xx(O) wl12xx(O) wlcore(O) mac80211(O) pvrsrvkm_sgx544_112(O) cfg80211(O) compat(O)
[ 5766.611022] Backtrace:
[ 5766.614013] [<c00180ec>] (dump_backtrace+0x0/0x10c) from [<c065d448>] (dump_stack+0x18/0x1c)
[ 5766.623413] r6:c003a19c r5:00000009 r4:c0921d80 r3:c0982f10
[ 5766.630340] [<c065d430>] (dump_stack+0x0/0x1c) from [<c0046cf4>] (warn_slowpath_common+0x54/0x6c)
[ 5766.640258] [<c0046ca0>] (warn_slowpath_common+0x0/0x6c) from [<c0046db0>] (warn_slowpath_fmt+0x38/0x40)
[ 5766.650787] r8:00000000 r7:00000018 r6:c06712c4 r5:80080001 r4:e08f4400
[ 5766.658630] r3:00000009
[ 5766.661926] [<c0046d78>] (warn_slowpath_fmt+0x0/0x40) from [<c003a19c>] (l3_interrupt_handler+0xc0/0x170)
[ 5766.672546] r3:c080790c r2:c0807858
[ 5766.676910] [<c003a0dc>] (l3_interrupt_handler+0x0/0x170) from [<c00a8bc0>] (handle_irq_event_percpu+0x64/0x2b0)
[ 5766.688201] r8:00000000 r7:0000002a r6:0000002a r5:c0924190 r4:d6cbeac0
[ 5766.696533] [<c00a8b5c>] (handle_irq_event_percpu+0x0/0x2b0) from [<c00a8e50>] (handle_irq_event+0x44/0x64)
[ 5766.707244] [<c00a8e0c>] (handle_irq_event+0x0/0x64) from [<c00abb80>] (handle_fasteoi_irq+0xa0/0x160)
[ 5766.717620] r6:c0920000 r5:c0924190 r4:c0924140 r3:00000000
[ 5766.724639] [<c00abae0>] (handle_fasteoi_irq+0x0/0x160) from [<c00a83ac>] (generic_handle_irq+0x30/0x44)
[ 5766.735198] r5:c091e538 r4:c0946d40
[ 5766.739562] [<c00a837c>] (generic_handle_irq+0x0/0x44) from [<c0014b88>] (handle_IRQ+0x54/0xb8)
[ 5766.749267] [<c0014b34>] (handle_IRQ+0x0/0xb8) from [<c00084d0>] (gic_handle_irq+0x2c/0x60)
[ 5766.758453] r8:00000000 r7:c0921ed4 r6:c0921ea0 r5:c0945a00 r4:e0802100
[ 5766.766448] r3:c008aeb8
[ 5766.769744] [<c00084a4>] (gic_handle_irq+0x0/0x60) from [<c06678c0>] (__irq_svc+0x40/0x70)
[ 5766.778991] Exception stack(0xc0921ea0 to 0xc0921ee8)
[ 5766.784637] 1ea0: c0921ee8 000be65e a237f8b7 0000053e a2378182 0000053e c1858498 00000000
[ 5766.793762] 1ec0: 00000000 c095645c c0a3350c c0921f14 00001686 c0921ee8 c008aeb8 c042e5b4
[ 5766.802886] 1ee0: 60070013 ffffffff
[ 5766.806823] r6:ffffffff r5:60070013 r4:c042e5b4 r3:c008aeb8
[ 5766.813903] [<c042e564>] (cpuidle_wrap_enter+0x0/0x9c) from [<c042db94>] (cpuidle_enter_tk+0x18/0x1c)
[ 5766.824035] r7:c09c35b4 r6:c1858498 r5:00000000 r4:c1858498
[ 5766.830963] [<c042db7c>] (cpuidle_enter_tk+0x0/0x1c) from [<c042e0b0>] (cpuidle_enter_state+0x1c/0x78)
[ 5766.841339] [<c042e094>] (cpuidle_enter_state+0x0/0x78) from [<c042e1ec>] (cpuidle_idle_call+0xe0/0x31c)
[ 5766.851898] r6:c0920000 r5:00000000 r4:c1858498 r3:0000004c
[ 5766.858825] [<c042e10c>] (cpuidle_idle_call+0x0/0x31c) from [<c00152b4>] (cpu_idle+0xa4/0x10c)
[ 5766.868438] [<c0015210>] (cpu_idle+0x0/0x10c) from [<c063ce50>] (rest_init+0x74/0x8c)
[ 5766.877227] [<c063cddc>] (rest_init+0x0/0x8c) from [<c08c7864>] (start_kernel+0x2b4/0x304)
[ 5766.886352] r4:c0946b20 r3:c0982f10
[ 5766.890808] [<c08c75b0>] (start_kernel+0x0/0x304) from [<80008044>] (0x80008044)
[ 5766.898986] Board Information:
[ 5766.898986] Revision : 20edb4
[ 5766.899017] Serial : 0000000000000000
[ 5766.899017] SoC Information:
[ 5766.899017] CPU : OMAP4470
[ 5766.899017] Rev : ES1.0
[ 5766.899047] Type : HS
[ 5766.899047] Production ID: 0002B975-000000CC
[ 5766.899047] Die ID : 76080000-30002FFF-01518C70-0D00F007
[ 5766.899047]
[ 5766.935028] ---[ end trace 5f7d6da5db258915 ]---
[ 5766.948150] virtio_rpmsg_bus virtio1: destroying channel rpmsg-resmgr addr 0x66
[ 5767.098541] virtio_rpmsg_bus virtio1: creating channel rpmsg-resmgr addr 0x66
[ 5769.519683] ------------[ cut here ]------------
[ 5769.524749] WARNING: at arch/arm/mach-omap2/omap_l3_noc.c:97 l3_interrupt_handler+0xc0/0x170()
[ 5769.534149] L3 standard error: TARGET:ISS at address 0x10
[ 5769.540100] Modules linked in: wlcore_sdio(O) wl18xx(O) wl12xx(O) wlcore(O) mac80211(O) pvrsrvkm_sgx544_112(O) cfg80211(O) compat(O)
[ 5769.553802] Backtrace:
[ 5769.556610] [<c00180ec>] (dump_backtrace+0x0/0x10c) from [<c065d448>] (dump_stack+0x18/0x1c)
[ 5769.565734] r6:c003a19c r5:00000009 r4:ca453a68 r3:c0982f10
[ 5769.572296] [<c065d430>] (dump_stack+0x0/0x1c) from [<c0046cf4>] (warn_slowpath_common+0x54/0x6c)
[ 5769.581970] [<c0046ca0>] (warn_slowpath_common+0x0/0x6c) from [<c0046db0>] (warn_slowpath_fmt+0x38/0x40)
[ 5769.592285] r8:00000000 r7:00000018 r6:c06712c4 r5:80080001 r4:e08f4400
[ 5769.599700] r3:00000009
[ 5769.602783] [<c0046d78>] (warn_slowpath_fmt+0x0/0x40) from [<c003a19c>] (l3_interrupt_handler+0xc0/0x170)
[ 5769.613189] r3:c080790c r2:c0807858
[ 5769.617340] [<c003a0dc>] (l3_interrupt_handler+0x0/0x170) from [<c00a8bc0>] (handle_irq_event_percpu+0x64/0x2b0)
[ 5769.628356] r8:00000000 r7:0000002a r6:0000002a r5:c0924190 r4:d6cbeac0
[ 5769.636108] [<c00a8b5c>] (handle_irq_event_percpu+0x0/0x2b0) from [<c00a8e50>] (handle_irq_event+0x44/0x64)
[ 5769.646728] [<c00a8e0c>] (handle_irq_event+0x0/0x64) from [<c00abb80>] (handle_fasteoi_irq+0xa0/0x160)
[ 5769.656860] r6:ca452000 r5:c0924190 r4:c0924140 r3:00000000
[ 5769.663360] [<c00abae0>] (handle_fasteoi_irq+0x0/0x160) from [<c00a83ac>] (generic_handle_irq+0x30/0x44)
[ 5769.673675] r5:c091e538 r4:c0946d40
[ 5769.677764] [<c00a837c>] (generic_handle_irq+0x0/0x44) from [<c0014b88>] (handle_IRQ+0x54/0xb8)
[ 5769.687255] [<c0014b34>] (handle_IRQ+0x0/0xb8) from [<c00084d0>] (gic_handle_irq+0x2c/0x60)
[ 5769.696380] r8:d6cf3f40 r7:ca453bbc r6:ca453b88 r5:c0945a00 r4:e0802100
[ 5769.703857] r3:c0029070
[ 5769.706909] [<c00084a4>] (gic_handle_irq+0x0/0x60) from [<c06678c0>] (__irq_svc+0x40/0x70)
[ 5769.715881] Exception stack(0xca453b88 to 0xca453bd0)
[ 5769.721435] 3b80: c0964d98 a0000013 00000010 00000000 00000000 c0964d98
[ 5769.730377] 3ba0: a0000013 d6cf3f40 d6cf3f40 3b9aca00 00000000 ca453bdc ca453be0 ca453bd0
[ 5769.739227] 3bc0: c0029070 c0666d68 60000013 ffffffff
[ 5769.744781] r6:ffffffff r5:60000013 r4:c0666d68 r3:c0029070
[ 5769.751281] [<c0666d44>] (_raw_spin_unlock_irqrestore+0x0/0x50) from [<c0029070>] (omap_hwmod_reset+0x3c/0x4c)
[ 5769.762176] [<c0029034>] (omap_hwmod_reset+0x0/0x4c) from [<c0024d30>] (omap_cam_deactivate+0x30/0x48)
[ 5769.772308] r6:d6cf3fc0 r5:d6cf3fc0 r4:00000001 r3:d6cf3f80
[ 5769.778869] [<c0024d00>] (omap_cam_deactivate+0x0/0x48) from [<c0040bc4>] (_omap_device_deactivate+0xb4/0x14c)
[ 5769.789703] r5:d6cf1608 r4:d6cf3fc0
[ 5769.793853] [<c0040b10>] (_omap_device_deactivate+0x0/0x14c) from [<c0041434>] (omap_device_idle+0x30/0x5c)
[ 5769.804473] [<c0041404>] (omap_device_idle+0x0/0x5c) from [<c0041520>] (omap_device_runtime_suspend+0x24/0x2c)
[ 5769.815277] r4:00000000 r3:00000000
[ 5769.819396] [<c00414fc>] (omap_device_runtime_suspend+0x0/0x2c) from [<c02f1d5c>] (__rpm_callback+0x3c/0x78)
[ 5769.830078] r5:d6cf1668 r4:d6cf1608
[ 5769.834167] [<c02f1d20>] (__rpm_callback+0x0/0x78) from [<c02f2270>] (rpm_suspend+0x254/0x728)
[ 5769.843566] r6:00000000 r5:00000000 r4:d6cf1608 r3:c09827ec
[ 5769.850067] [<c02f201c>] (rpm_suspend+0x0/0x728) from [<c02f385c>] (__pm_runtime_suspend+0x60/0x84)
[ 5769.859924] [<c02f37fc>] (__pm_runtime_suspend+0x0/0x84) from [<c02eea28>] (pm_generic_runtime_idle+0x4c/0x58)
[ 5769.870819] r7:60000013 r6:c0040978 r5:d6cf1668 r4:d6cf1608
[ 5769.877319] [<c02ee9dc>] (pm_generic_runtime_idle+0x0/0x58) from [<c0040988>] (_od_runtime_idle+0x10/0x14)
[ 5769.887817] r4:d6cf1608 r3:00000000
[ 5769.891967] [<c0040978>] (_od_runtime_idle+0x0/0x14) from [<c02f1d5c>] (__rpm_callback+0x3c/0x78)
[ 5769.901580] [<c02f1d20>] (__rpm_callback+0x0/0x78) from [<c02f28c0>] (rpm_idle+0x100/0x290)
[ 5769.910675] r6:00000000 r5:00000004 r4:d6cf1608 r3:00000088
[ 5769.917236] [<c02f27c0>] (rpm_idle+0x0/0x290) from [<c02f2b2c>] (__pm_runtime_idle+0x60/0x84)
[ 5769.926452] r8:ce7b2c00 r7:60000013 r6:d6cf1668 r5:00000004 r4:d6cf1608
[ 5769.933959] r3:d6cf16ec
[ 5769.937042] [<c02f2acc>] (__pm_runtime_idle+0x0/0x84) from [<c0473100>] (_device_release+0x34/0x38)
[ 5769.946899] r7:cf2a3288 r6:ce7b2c08 r5:d6cf1608 r4:d5f9b440
[ 5769.953460] [<c04730cc>] (_device_release+0x0/0x38) from [<c0473b74>] (rprm_iss_release+0x10/0x38)
[ 5769.963165] r5:ce7b2c08 r4:cf2a32c0
[ 5769.967315] [<c0473b64>] (rprm_iss_release+0x0/0x38) from [<c0471f90>] (_resource_release+0x40/0xdc)
[ 5769.977172] r4:cf2a32c0 r3:c0473b64
[ 5769.981323] [<c0471f50>] (_resource_release+0x0/0xdc) from [<c04722f8>] (rprm_cb+0x270/0x680)
[ 5769.990631] r6:00000000 r5:ce7b2c08 r4:cf2a32a0 r3:00000000
[ 5769.997131] [<c0472088>] (rprm_cb+0x0/0x680) from [<c0470e50>] (rpmsg_recv_done+0x108/0x220)
[ 5770.006347] [<c0470d48>] (rpmsg_recv_done+0x0/0x220) from [<c02ab2f8>] (vring_interrupt+0x40/0x58)
[ 5770.016113] [<c02ab2b8>] (vring_interrupt+0x0/0x58) from [<c046f728>] (rproc_vq_interrupt+0x3c/0x50)
[ 5770.026000] [<c046f6ec>] (rproc_vq_interrupt+0x0/0x50) from [<c04707c4>] (_vq_interrupt_thread+0x1c/0x44)
[ 5770.036437] [<c04707a8>] (_vq_interrupt_thread+0x0/0x44) from [<c0066764>] (kthread+0x90/0x9c)
[ 5770.045806] r5:cf2e9cc0 r4:cf937e44
[ 5770.049896] [<c00666d4>] (kthread+0x0/0x9c) from [<c004ac04>] (do_exit+0x0/0x7b4)
[ 5770.058074] r6:c004ac04 r5:c00666d4 r4:cf937e44
[ 5770.063385] Board Information:
[ 5770.063385] Revision : 20edb4
[ 5770.063385] Serial : 0000000000000000
[ 5770.063385] SoC Information:
[ 5770.063385] CPU : OMAP4470
[ 5770.063385] Rev : ES1.0
[ 5770.063415] Type : HS
[ 5770.063415] Production ID: 0002B975-000000CC
[ 5770.063415] Die ID : 76080000-30002FFF-01518C70-0D00F007
[ 5770.063415]
[ 5770.098297] ---[ end trace 5f7d6da5db258916 ]---
[ 5770.110778] virtio_rpmsg_bus virtio1: destroying channel rpmsg-resmgr addr 0x66
[ 5770.266723] virtio_rpmsg_bus virtio1: creating channel rpmsg-resmgr addr 0x66
^ permalink raw reply [flat|nested] 19+ messages in thread
* Re: [PATCH] ARM: OMAP4: hwmod: Fix SOFTRESET logic for OMAP4
2014-02-05 17:05 ` Grygorii Strashko
@ 2014-02-05 17:41 ` Nishanth Menon
-1 siblings, 0 replies; 19+ messages in thread
From: Nishanth Menon @ 2014-02-05 17:41 UTC (permalink / raw)
To: Grygorii Strashko, Dan Murphy
Cc: Illia Smyrnov, Benoît Cousson, Paul Walmsley, Tony Lindgren,
Russell King, lkml, linux-omap, linux-arm-kernel, Roger Quadros,
Rajendra Nayak
2014-02-05 Grygorii Strashko <grygorii.strashko@ti.com>:
> Hi All,
> On 02/05/2014 05:06 PM, Illia Smyrnov wrote:
>> Commit 313a76e (ARM: OMAP2+: hwmod: Fix SOFTRESET logic) introduced
>> softreset bit cleaning right after set one. It is caused L3 error for
>> OMAP4 ISS because ISS register write occurs when ISS reset process is in
>> progress. Avoid this situation by cleaning softreset bit later, when reset
>> process is successfully finished.
>
> I'd like to mention that this issue has been caught while upgrading
> custom Linux Kernel 3.4 to the last Stable Kernel linux-3.4.y.
> So, the same OMAP4+ functionality can be broken in all Stable trees
> where commit "ARM: OMAP2+: hwmod: Fix SOFTRESET logic" was merged to.
>
> On OMAP4+ we should always try to wait until IP reset is finished before proceed.
>
> Reviewed-by: "Grygorii Strashko <grygorii.strashko@ti.com>"
>
> Error log example (k3.4):
>
Thanks - I for a moment thought it was on newer kernels :).
Looping in Dan who is currently looking at reset driver replacement
for existing hwmod based reset solution.
Regards,
Nishanth Menon
^ permalink raw reply [flat|nested] 19+ messages in thread
* [PATCH] ARM: OMAP4: hwmod: Fix SOFTRESET logic for OMAP4
@ 2014-02-05 17:41 ` Nishanth Menon
0 siblings, 0 replies; 19+ messages in thread
From: Nishanth Menon @ 2014-02-05 17:41 UTC (permalink / raw)
To: linux-arm-kernel
2014-02-05 Grygorii Strashko <grygorii.strashko@ti.com>:
> Hi All,
> On 02/05/2014 05:06 PM, Illia Smyrnov wrote:
>> Commit 313a76e (ARM: OMAP2+: hwmod: Fix SOFTRESET logic) introduced
>> softreset bit cleaning right after set one. It is caused L3 error for
>> OMAP4 ISS because ISS register write occurs when ISS reset process is in
>> progress. Avoid this situation by cleaning softreset bit later, when reset
>> process is successfully finished.
>
> I'd like to mention that this issue has been caught while upgrading
> custom Linux Kernel 3.4 to the last Stable Kernel linux-3.4.y.
> So, the same OMAP4+ functionality can be broken in all Stable trees
> where commit "ARM: OMAP2+: hwmod: Fix SOFTRESET logic" was merged to.
>
> On OMAP4+ we should always try to wait until IP reset is finished before proceed.
>
> Reviewed-by: "Grygorii Strashko <grygorii.strashko@ti.com>"
>
> Error log example (k3.4):
>
Thanks - I for a moment thought it was on newer kernels :).
Looping in Dan who is currently looking at reset driver replacement
for existing hwmod based reset solution.
Regards,
Nishanth Menon
^ permalink raw reply [flat|nested] 19+ messages in thread
* Re: [PATCH] ARM: OMAP4: hwmod: Fix SOFTRESET logic for OMAP4
2014-02-05 15:06 ` Illia Smyrnov
(?)
@ 2014-02-06 11:26 ` Roger Quadros
-1 siblings, 0 replies; 19+ messages in thread
From: Roger Quadros @ 2014-02-06 11:26 UTC (permalink / raw)
To: Illia Smyrnov, Benoît Cousson, Paul Walmsley, Tony Lindgren
Cc: Russell King, linux-omap, linux-arm-kernel, linux-kernel
Hi Illia,
On 02/05/2014 05:06 PM, Illia Smyrnov wrote:
> Commit 313a76e (ARM: OMAP2+: hwmod: Fix SOFTRESET logic) introduced
> softreset bit cleaning right after set one. It is caused L3 error for
> OMAP4 ISS because ISS register write occurs when ISS reset process is in
> progress. Avoid this situation by cleaning softreset bit later, when reset
> process is successfully finished.
>
> Signed-off-by: Illia Smyrnov <illia.smyrnov@globallogic.com>
Thanks for the patch. Could you please send --cc this to stable as well. Thanks.
cheers,
-roger
> ---
> arch/arm/mach-omap2/omap_hwmod.c | 20 +++++++++++---------
> 1 file changed, 11 insertions(+), 9 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
> index 42d8188..1f33f5d 100644
> --- a/arch/arm/mach-omap2/omap_hwmod.c
> +++ b/arch/arm/mach-omap2/omap_hwmod.c
> @@ -1947,29 +1947,31 @@ static int _ocp_softreset(struct omap_hwmod *oh)
> goto dis_opt_clks;
>
> _write_sysconfig(v, oh);
> - ret = _clear_softreset(oh, &v);
> - if (ret)
> - goto dis_opt_clks;
> -
> - _write_sysconfig(v, oh);
>
> if (oh->class->sysc->srst_udelay)
> udelay(oh->class->sysc->srst_udelay);
>
> c = _wait_softreset_complete(oh);
> - if (c == MAX_MODULE_SOFTRESET_WAIT)
> + if (c == MAX_MODULE_SOFTRESET_WAIT) {
> pr_warning("omap_hwmod: %s: softreset failed (waited %d usec)\n",
> oh->name, MAX_MODULE_SOFTRESET_WAIT);
> - else
> + ret = -ETIMEDOUT;
> + goto dis_opt_clks;
> + } else {
> pr_debug("omap_hwmod: %s: softreset in %d usec\n", oh->name, c);
> + }
> +
> + ret = _clear_softreset(oh, &v);
> + if (ret)
> + goto dis_opt_clks;
> +
> + _write_sysconfig(v, oh);
>
> /*
> * XXX add _HWMOD_STATE_WEDGED for modules that don't come back from
> * _wait_target_ready() or _reset()
> */
>
> - ret = (c == MAX_MODULE_SOFTRESET_WAIT) ? -ETIMEDOUT : 0;
> -
> dis_opt_clks:
> if (oh->flags & HWMOD_CONTROL_OPT_CLKS_IN_RESET)
> _disable_optional_clocks(oh);
>
^ permalink raw reply [flat|nested] 19+ messages in thread
* Re: [PATCH] ARM: OMAP4: hwmod: Fix SOFTRESET logic for OMAP4
@ 2014-02-06 11:26 ` Roger Quadros
0 siblings, 0 replies; 19+ messages in thread
From: Roger Quadros @ 2014-02-06 11:26 UTC (permalink / raw)
To: Illia Smyrnov, Benoît Cousson, Paul Walmsley, Tony Lindgren
Cc: linux-omap, Russell King, linux-kernel, linux-arm-kernel
Hi Illia,
On 02/05/2014 05:06 PM, Illia Smyrnov wrote:
> Commit 313a76e (ARM: OMAP2+: hwmod: Fix SOFTRESET logic) introduced
> softreset bit cleaning right after set one. It is caused L3 error for
> OMAP4 ISS because ISS register write occurs when ISS reset process is in
> progress. Avoid this situation by cleaning softreset bit later, when reset
> process is successfully finished.
>
> Signed-off-by: Illia Smyrnov <illia.smyrnov@globallogic.com>
Thanks for the patch. Could you please send --cc this to stable as well. Thanks.
cheers,
-roger
> ---
> arch/arm/mach-omap2/omap_hwmod.c | 20 +++++++++++---------
> 1 file changed, 11 insertions(+), 9 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
> index 42d8188..1f33f5d 100644
> --- a/arch/arm/mach-omap2/omap_hwmod.c
> +++ b/arch/arm/mach-omap2/omap_hwmod.c
> @@ -1947,29 +1947,31 @@ static int _ocp_softreset(struct omap_hwmod *oh)
> goto dis_opt_clks;
>
> _write_sysconfig(v, oh);
> - ret = _clear_softreset(oh, &v);
> - if (ret)
> - goto dis_opt_clks;
> -
> - _write_sysconfig(v, oh);
>
> if (oh->class->sysc->srst_udelay)
> udelay(oh->class->sysc->srst_udelay);
>
> c = _wait_softreset_complete(oh);
> - if (c == MAX_MODULE_SOFTRESET_WAIT)
> + if (c == MAX_MODULE_SOFTRESET_WAIT) {
> pr_warning("omap_hwmod: %s: softreset failed (waited %d usec)\n",
> oh->name, MAX_MODULE_SOFTRESET_WAIT);
> - else
> + ret = -ETIMEDOUT;
> + goto dis_opt_clks;
> + } else {
> pr_debug("omap_hwmod: %s: softreset in %d usec\n", oh->name, c);
> + }
> +
> + ret = _clear_softreset(oh, &v);
> + if (ret)
> + goto dis_opt_clks;
> +
> + _write_sysconfig(v, oh);
>
> /*
> * XXX add _HWMOD_STATE_WEDGED for modules that don't come back from
> * _wait_target_ready() or _reset()
> */
>
> - ret = (c == MAX_MODULE_SOFTRESET_WAIT) ? -ETIMEDOUT : 0;
> -
> dis_opt_clks:
> if (oh->flags & HWMOD_CONTROL_OPT_CLKS_IN_RESET)
> _disable_optional_clocks(oh);
>
^ permalink raw reply [flat|nested] 19+ messages in thread
* [PATCH] ARM: OMAP4: hwmod: Fix SOFTRESET logic for OMAP4
@ 2014-02-06 11:26 ` Roger Quadros
0 siblings, 0 replies; 19+ messages in thread
From: Roger Quadros @ 2014-02-06 11:26 UTC (permalink / raw)
To: linux-arm-kernel
Hi Illia,
On 02/05/2014 05:06 PM, Illia Smyrnov wrote:
> Commit 313a76e (ARM: OMAP2+: hwmod: Fix SOFTRESET logic) introduced
> softreset bit cleaning right after set one. It is caused L3 error for
> OMAP4 ISS because ISS register write occurs when ISS reset process is in
> progress. Avoid this situation by cleaning softreset bit later, when reset
> process is successfully finished.
>
> Signed-off-by: Illia Smyrnov <illia.smyrnov@globallogic.com>
Thanks for the patch. Could you please send --cc this to stable as well. Thanks.
cheers,
-roger
> ---
> arch/arm/mach-omap2/omap_hwmod.c | 20 +++++++++++---------
> 1 file changed, 11 insertions(+), 9 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
> index 42d8188..1f33f5d 100644
> --- a/arch/arm/mach-omap2/omap_hwmod.c
> +++ b/arch/arm/mach-omap2/omap_hwmod.c
> @@ -1947,29 +1947,31 @@ static int _ocp_softreset(struct omap_hwmod *oh)
> goto dis_opt_clks;
>
> _write_sysconfig(v, oh);
> - ret = _clear_softreset(oh, &v);
> - if (ret)
> - goto dis_opt_clks;
> -
> - _write_sysconfig(v, oh);
>
> if (oh->class->sysc->srst_udelay)
> udelay(oh->class->sysc->srst_udelay);
>
> c = _wait_softreset_complete(oh);
> - if (c == MAX_MODULE_SOFTRESET_WAIT)
> + if (c == MAX_MODULE_SOFTRESET_WAIT) {
> pr_warning("omap_hwmod: %s: softreset failed (waited %d usec)\n",
> oh->name, MAX_MODULE_SOFTRESET_WAIT);
> - else
> + ret = -ETIMEDOUT;
> + goto dis_opt_clks;
> + } else {
> pr_debug("omap_hwmod: %s: softreset in %d usec\n", oh->name, c);
> + }
> +
> + ret = _clear_softreset(oh, &v);
> + if (ret)
> + goto dis_opt_clks;
> +
> + _write_sysconfig(v, oh);
>
> /*
> * XXX add _HWMOD_STATE_WEDGED for modules that don't come back from
> * _wait_target_ready() or _reset()
> */
>
> - ret = (c == MAX_MODULE_SOFTRESET_WAIT) ? -ETIMEDOUT : 0;
> -
> dis_opt_clks:
> if (oh->flags & HWMOD_CONTROL_OPT_CLKS_IN_RESET)
> _disable_optional_clocks(oh);
>
^ permalink raw reply [flat|nested] 19+ messages in thread
* Re: [PATCH] ARM: OMAP4: hwmod: Fix SOFTRESET logic for OMAP4
2014-02-05 15:06 ` Illia Smyrnov
(?)
@ 2014-02-06 15:03 ` Roger Quadros
-1 siblings, 0 replies; 19+ messages in thread
From: Roger Quadros @ 2014-02-06 15:03 UTC (permalink / raw)
To: Illia Smyrnov, Benoît Cousson, Paul Walmsley, Tony Lindgren
Cc: Russell King, linux-omap, linux-arm-kernel, linux-kernel
On 02/05/2014 05:06 PM, Illia Smyrnov wrote:
> Commit 313a76e (ARM: OMAP2+: hwmod: Fix SOFTRESET logic) introduced
> softreset bit cleaning right after set one. It is caused L3 error for
> OMAP4 ISS because ISS register write occurs when ISS reset process is in
> progress. Avoid this situation by cleaning softreset bit later, when reset
> process is successfully finished.
>
> Signed-off-by: Illia Smyrnov <illia.smyrnov@globallogic.com>
Acked-by: Roger Quadros <rogerq@ti.com>
> ---
> arch/arm/mach-omap2/omap_hwmod.c | 20 +++++++++++---------
> 1 file changed, 11 insertions(+), 9 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
> index 42d8188..1f33f5d 100644
> --- a/arch/arm/mach-omap2/omap_hwmod.c
> +++ b/arch/arm/mach-omap2/omap_hwmod.c
> @@ -1947,29 +1947,31 @@ static int _ocp_softreset(struct omap_hwmod *oh)
> goto dis_opt_clks;
>
> _write_sysconfig(v, oh);
> - ret = _clear_softreset(oh, &v);
> - if (ret)
> - goto dis_opt_clks;
> -
> - _write_sysconfig(v, oh);
>
> if (oh->class->sysc->srst_udelay)
> udelay(oh->class->sysc->srst_udelay);
>
> c = _wait_softreset_complete(oh);
> - if (c == MAX_MODULE_SOFTRESET_WAIT)
> + if (c == MAX_MODULE_SOFTRESET_WAIT) {
> pr_warning("omap_hwmod: %s: softreset failed (waited %d usec)\n",
> oh->name, MAX_MODULE_SOFTRESET_WAIT);
> - else
> + ret = -ETIMEDOUT;
> + goto dis_opt_clks;
> + } else {
> pr_debug("omap_hwmod: %s: softreset in %d usec\n", oh->name, c);
> + }
> +
> + ret = _clear_softreset(oh, &v);
> + if (ret)
> + goto dis_opt_clks;
> +
> + _write_sysconfig(v, oh);
>
> /*
> * XXX add _HWMOD_STATE_WEDGED for modules that don't come back from
> * _wait_target_ready() or _reset()
> */
>
> - ret = (c == MAX_MODULE_SOFTRESET_WAIT) ? -ETIMEDOUT : 0;
> -
> dis_opt_clks:
> if (oh->flags & HWMOD_CONTROL_OPT_CLKS_IN_RESET)
> _disable_optional_clocks(oh);
>
^ permalink raw reply [flat|nested] 19+ messages in thread
* Re: [PATCH] ARM: OMAP4: hwmod: Fix SOFTRESET logic for OMAP4
@ 2014-02-06 15:03 ` Roger Quadros
0 siblings, 0 replies; 19+ messages in thread
From: Roger Quadros @ 2014-02-06 15:03 UTC (permalink / raw)
To: Illia Smyrnov, Benoît Cousson, Paul Walmsley, Tony Lindgren
Cc: linux-omap, Russell King, linux-kernel, linux-arm-kernel
On 02/05/2014 05:06 PM, Illia Smyrnov wrote:
> Commit 313a76e (ARM: OMAP2+: hwmod: Fix SOFTRESET logic) introduced
> softreset bit cleaning right after set one. It is caused L3 error for
> OMAP4 ISS because ISS register write occurs when ISS reset process is in
> progress. Avoid this situation by cleaning softreset bit later, when reset
> process is successfully finished.
>
> Signed-off-by: Illia Smyrnov <illia.smyrnov@globallogic.com>
Acked-by: Roger Quadros <rogerq@ti.com>
> ---
> arch/arm/mach-omap2/omap_hwmod.c | 20 +++++++++++---------
> 1 file changed, 11 insertions(+), 9 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
> index 42d8188..1f33f5d 100644
> --- a/arch/arm/mach-omap2/omap_hwmod.c
> +++ b/arch/arm/mach-omap2/omap_hwmod.c
> @@ -1947,29 +1947,31 @@ static int _ocp_softreset(struct omap_hwmod *oh)
> goto dis_opt_clks;
>
> _write_sysconfig(v, oh);
> - ret = _clear_softreset(oh, &v);
> - if (ret)
> - goto dis_opt_clks;
> -
> - _write_sysconfig(v, oh);
>
> if (oh->class->sysc->srst_udelay)
> udelay(oh->class->sysc->srst_udelay);
>
> c = _wait_softreset_complete(oh);
> - if (c == MAX_MODULE_SOFTRESET_WAIT)
> + if (c == MAX_MODULE_SOFTRESET_WAIT) {
> pr_warning("omap_hwmod: %s: softreset failed (waited %d usec)\n",
> oh->name, MAX_MODULE_SOFTRESET_WAIT);
> - else
> + ret = -ETIMEDOUT;
> + goto dis_opt_clks;
> + } else {
> pr_debug("omap_hwmod: %s: softreset in %d usec\n", oh->name, c);
> + }
> +
> + ret = _clear_softreset(oh, &v);
> + if (ret)
> + goto dis_opt_clks;
> +
> + _write_sysconfig(v, oh);
>
> /*
> * XXX add _HWMOD_STATE_WEDGED for modules that don't come back from
> * _wait_target_ready() or _reset()
> */
>
> - ret = (c == MAX_MODULE_SOFTRESET_WAIT) ? -ETIMEDOUT : 0;
> -
> dis_opt_clks:
> if (oh->flags & HWMOD_CONTROL_OPT_CLKS_IN_RESET)
> _disable_optional_clocks(oh);
>
^ permalink raw reply [flat|nested] 19+ messages in thread
* [PATCH] ARM: OMAP4: hwmod: Fix SOFTRESET logic for OMAP4
@ 2014-02-06 15:03 ` Roger Quadros
0 siblings, 0 replies; 19+ messages in thread
From: Roger Quadros @ 2014-02-06 15:03 UTC (permalink / raw)
To: linux-arm-kernel
On 02/05/2014 05:06 PM, Illia Smyrnov wrote:
> Commit 313a76e (ARM: OMAP2+: hwmod: Fix SOFTRESET logic) introduced
> softreset bit cleaning right after set one. It is caused L3 error for
> OMAP4 ISS because ISS register write occurs when ISS reset process is in
> progress. Avoid this situation by cleaning softreset bit later, when reset
> process is successfully finished.
>
> Signed-off-by: Illia Smyrnov <illia.smyrnov@globallogic.com>
Acked-by: Roger Quadros <rogerq@ti.com>
> ---
> arch/arm/mach-omap2/omap_hwmod.c | 20 +++++++++++---------
> 1 file changed, 11 insertions(+), 9 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
> index 42d8188..1f33f5d 100644
> --- a/arch/arm/mach-omap2/omap_hwmod.c
> +++ b/arch/arm/mach-omap2/omap_hwmod.c
> @@ -1947,29 +1947,31 @@ static int _ocp_softreset(struct omap_hwmod *oh)
> goto dis_opt_clks;
>
> _write_sysconfig(v, oh);
> - ret = _clear_softreset(oh, &v);
> - if (ret)
> - goto dis_opt_clks;
> -
> - _write_sysconfig(v, oh);
>
> if (oh->class->sysc->srst_udelay)
> udelay(oh->class->sysc->srst_udelay);
>
> c = _wait_softreset_complete(oh);
> - if (c == MAX_MODULE_SOFTRESET_WAIT)
> + if (c == MAX_MODULE_SOFTRESET_WAIT) {
> pr_warning("omap_hwmod: %s: softreset failed (waited %d usec)\n",
> oh->name, MAX_MODULE_SOFTRESET_WAIT);
> - else
> + ret = -ETIMEDOUT;
> + goto dis_opt_clks;
> + } else {
> pr_debug("omap_hwmod: %s: softreset in %d usec\n", oh->name, c);
> + }
> +
> + ret = _clear_softreset(oh, &v);
> + if (ret)
> + goto dis_opt_clks;
> +
> + _write_sysconfig(v, oh);
>
> /*
> * XXX add _HWMOD_STATE_WEDGED for modules that don't come back from
> * _wait_target_ready() or _reset()
> */
>
> - ret = (c == MAX_MODULE_SOFTRESET_WAIT) ? -ETIMEDOUT : 0;
> -
> dis_opt_clks:
> if (oh->flags & HWMOD_CONTROL_OPT_CLKS_IN_RESET)
> _disable_optional_clocks(oh);
>
^ permalink raw reply [flat|nested] 19+ messages in thread
* Re: [PATCH] ARM: OMAP4: hwmod: Fix SOFTRESET logic for OMAP4
2014-02-05 15:06 ` Illia Smyrnov
(?)
@ 2014-02-19 17:53 ` Paul Walmsley
-1 siblings, 0 replies; 19+ messages in thread
From: Paul Walmsley @ 2014-02-19 17:53 UTC (permalink / raw)
To: Illia Smyrnov
Cc: Benoît Cousson, Tony Lindgren, Russell King, Roger Quadros,
linux-omap, linux-arm-kernel, linux-kernel, grygorii.strashko,
rogerq
On Wed, 5 Feb 2014, Illia Smyrnov wrote:
> Commit 313a76e (ARM: OMAP2+: hwmod: Fix SOFTRESET logic) introduced
> softreset bit cleaning right after set one. It is caused L3 error for
> OMAP4 ISS because ISS register write occurs when ISS reset process is in
> progress. Avoid this situation by cleaning softreset bit later, when reset
> process is successfully finished.
>
> Signed-off-by: Illia Smyrnov <illia.smyrnov@globallogic.com>
Thanks, queued for v3.14-rc with notations from Grygorii and Roger.
- Paul
^ permalink raw reply [flat|nested] 19+ messages in thread
* Re: [PATCH] ARM: OMAP4: hwmod: Fix SOFTRESET logic for OMAP4
@ 2014-02-19 17:53 ` Paul Walmsley
0 siblings, 0 replies; 19+ messages in thread
From: Paul Walmsley @ 2014-02-19 17:53 UTC (permalink / raw)
To: Illia Smyrnov
Cc: Benoît Cousson, Tony Lindgren, Russell King, Roger Quadros,
linux-omap, linux-arm-kernel, linux-kernel, grygorii.strashko
On Wed, 5 Feb 2014, Illia Smyrnov wrote:
> Commit 313a76e (ARM: OMAP2+: hwmod: Fix SOFTRESET logic) introduced
> softreset bit cleaning right after set one. It is caused L3 error for
> OMAP4 ISS because ISS register write occurs when ISS reset process is in
> progress. Avoid this situation by cleaning softreset bit later, when reset
> process is successfully finished.
>
> Signed-off-by: Illia Smyrnov <illia.smyrnov@globallogic.com>
Thanks, queued for v3.14-rc with notations from Grygorii and Roger.
- Paul
^ permalink raw reply [flat|nested] 19+ messages in thread
* [PATCH] ARM: OMAP4: hwmod: Fix SOFTRESET logic for OMAP4
@ 2014-02-19 17:53 ` Paul Walmsley
0 siblings, 0 replies; 19+ messages in thread
From: Paul Walmsley @ 2014-02-19 17:53 UTC (permalink / raw)
To: linux-arm-kernel
On Wed, 5 Feb 2014, Illia Smyrnov wrote:
> Commit 313a76e (ARM: OMAP2+: hwmod: Fix SOFTRESET logic) introduced
> softreset bit cleaning right after set one. It is caused L3 error for
> OMAP4 ISS because ISS register write occurs when ISS reset process is in
> progress. Avoid this situation by cleaning softreset bit later, when reset
> process is successfully finished.
>
> Signed-off-by: Illia Smyrnov <illia.smyrnov@globallogic.com>
Thanks, queued for v3.14-rc with notations from Grygorii and Roger.
- Paul
^ permalink raw reply [flat|nested] 19+ messages in thread
* Re: [PATCH] ARM: OMAP4: hwmod: Fix SOFTRESET logic for OMAP4
2014-02-19 17:53 ` Paul Walmsley
@ 2014-05-05 14:02 ` Roger Quadros
-1 siblings, 0 replies; 19+ messages in thread
From: Roger Quadros @ 2014-05-05 14:02 UTC (permalink / raw)
To: Paul Walmsley, Illia Smyrnov
Cc: Benoît Cousson, Tony Lindgren, Russell King, linux-omap,
linux-arm-kernel, linux-kernel, grygorii.strashko
Hi Illia,
On 02/19/2014 07:53 PM, Paul Walmsley wrote:
> On Wed, 5 Feb 2014, Illia Smyrnov wrote:
>
>> Commit 313a76e (ARM: OMAP2+: hwmod: Fix SOFTRESET logic) introduced
>> softreset bit cleaning right after set one. It is caused L3 error for
>> OMAP4 ISS because ISS register write occurs when ISS reset process is in
>> progress. Avoid this situation by cleaning softreset bit later, when reset
>> process is successfully finished.
>>
>> Signed-off-by: Illia Smyrnov <illia.smyrnov@globallogic.com>
>
> Thanks, queued for v3.14-rc with notations from Grygorii and Roger.
>
This hasn't made it to the stable kernels yet.
Could you please send commit 01142519ffc0 to stable@vger.kernel.org for
v3.4+ kernels? Thanks.
cheers,
-roger
^ permalink raw reply [flat|nested] 19+ messages in thread
* [PATCH] ARM: OMAP4: hwmod: Fix SOFTRESET logic for OMAP4
@ 2014-05-05 14:02 ` Roger Quadros
0 siblings, 0 replies; 19+ messages in thread
From: Roger Quadros @ 2014-05-05 14:02 UTC (permalink / raw)
To: linux-arm-kernel
Hi Illia,
On 02/19/2014 07:53 PM, Paul Walmsley wrote:
> On Wed, 5 Feb 2014, Illia Smyrnov wrote:
>
>> Commit 313a76e (ARM: OMAP2+: hwmod: Fix SOFTRESET logic) introduced
>> softreset bit cleaning right after set one. It is caused L3 error for
>> OMAP4 ISS because ISS register write occurs when ISS reset process is in
>> progress. Avoid this situation by cleaning softreset bit later, when reset
>> process is successfully finished.
>>
>> Signed-off-by: Illia Smyrnov <illia.smyrnov@globallogic.com>
>
> Thanks, queued for v3.14-rc with notations from Grygorii and Roger.
>
This hasn't made it to the stable kernels yet.
Could you please send commit 01142519ffc0 to stable at vger.kernel.org for
v3.4+ kernels? Thanks.
cheers,
-roger
^ permalink raw reply [flat|nested] 19+ messages in thread
end of thread, other threads:[~2014-05-05 14:03 UTC | newest]
Thread overview: 19+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2014-02-05 15:06 [PATCH] ARM: OMAP4: hwmod: Fix SOFTRESET logic for OMAP4 Illia Smyrnov
2014-02-05 15:06 ` Illia Smyrnov
2014-02-05 15:06 ` Illia Smyrnov
2014-02-05 17:05 ` Grygorii Strashko
2014-02-05 17:05 ` Grygorii Strashko
2014-02-05 17:05 ` Grygorii Strashko
2014-02-05 17:41 ` Nishanth Menon
2014-02-05 17:41 ` Nishanth Menon
2014-02-06 11:26 ` Roger Quadros
2014-02-06 11:26 ` Roger Quadros
2014-02-06 11:26 ` Roger Quadros
2014-02-06 15:03 ` Roger Quadros
2014-02-06 15:03 ` Roger Quadros
2014-02-06 15:03 ` Roger Quadros
2014-02-19 17:53 ` Paul Walmsley
2014-02-19 17:53 ` Paul Walmsley
2014-02-19 17:53 ` Paul Walmsley
2014-05-05 14:02 ` Roger Quadros
2014-05-05 14:02 ` Roger Quadros
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