22 Jul, 2020
1 commit
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commit 8bdd79dae1ff5397351b95e249abcae126572617 upstream.
The watchdog counter consists of WDG_LOAD_LOW and WDG_LOAD_HIGH,
which would be loaded to watchdog counter once writing WDG_LOAD_LOW.Fixes: ac1775012058 ("spi: sprd: Add the support of restarting the system")
Signed-off-by: Lingling Xu
Signed-off-by: Chunyan Zhang
Link: https://lore.kernel.org/r/20200602082415.5848-1-zhang.lyra@gmail.com
Signed-off-by: Mark Brown
Signed-off-by: Greg Kroah-Hartman
31 Dec, 2019
1 commit
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[ Upstream commit 91ea1d70607e374b014b4b9bea771ce661f9f64b ]
When rebooting the system, we should lock the watchdog after
configuration to make sure the watchdog can reboot the system
successfully.Signed-off-by: Lingling Xu
Signed-off-by: Baolin Wang
Link: https://lore.kernel.org/r/7b04711127434555e3a1a86bc6be99860cd86668.1572257085.git.baolin.wang@linaro.org
Signed-off-by: Mark Brown
Signed-off-by: Sasha Levin
26 Jul, 2019
5 commits
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Now Spreadtrum ADI controller supplies multiple master accessing channel
to support multiple subsystems accessing, instead of using a hardware
spinlock to synchronize between the multiple subsystems.To keep backward compatibility, we should change the hardware spinlock
to be optional. Moreover change to use of_hwspin_lock_get_id() function
which return -ENOENT error number to indicate no hwlock support.Signed-off-by: Baolin Wang
Link: https://lore.kernel.org/r/2abe7dcf210e4197f8c5ece7fc6d6cc1eda8c655.1564125131.git.baolin.wang@linaro.org
Signed-off-by: Mark Brown -
When the system was rebooted by watchdog, now we did not save the watchdog
reset mode which will make system enter a incorrect mode after rebooting.Thus we should set the watchdog reset mode as default when opening the
watchdog configuration, that means if the system was rebooted by other
reason through the restart_handler(), then we will clear the default
watchdog reset mode to save the correct reset mode.Signed-off-by: Sherry Zong
Signed-off-by: Baolin Wang
Link: https://lore.kernel.org/r/1563f3de43c6c2262d597a25d6138b5de61ea23d.1564125131.git.baolin.wang@linaro.org
Signed-off-by: Mark Brown -
Add a new reset flag to indicate that the system need enter factory test
mode after restarting system.Signed-off-by: Sherry Zong
Signed-off-by: Baolin Wang
Link: https://lore.kernel.org/r/8ae5651e876b527920ff878721a8a8ef47b099ac.1564125131.git.baolin.wang@linaro.org
Signed-off-by: Mark Brown -
Add a new reset flag to indicate the reset reason is caused by TOS.
Signed-off-by: Chenxu Wei
Signed-off-by: Baolin Wang
Link: https://lore.kernel.org/r/97583aad1f2b849d69b4e76e8d29113da72a9fff.1564125131.git.baolin.wang@linaro.org
Signed-off-by: Mark Brown -
The ADI default transfer address bits is 12bit on Spreadtrum SC9860
platform, thus there is no need to set again, remove it.Signed-off-by: Baolin Wang
Link: https://lore.kernel.org/r/3cb57b8aadb7747a9f833e9b4fe8596ba738d9f6.1564125131.git.baolin.wang@linaro.org
Signed-off-by: Mark Brown
27 Jun, 2018
2 commits
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Change to use devm_hwspin_lock_request_specific() instead of
freeing the hwlock explicitly when unbound the device.Acked-by: Mark Brown
Signed-off-by: Baolin Wang
Signed-off-by: Bjorn Andersson -
Now the hwlock core has supplied new function to get a specific hwlock id
by one hwlock name, which is more clear for users. So change to use
of_hwspin_lock_get_id_byname().Acked-by: Mark Brown
Signed-off-by: Baolin Wang
Signed-off-by: Bjorn Andersson
21 Mar, 2018
2 commits
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On Spreadtrum platform, we use one PMIC watchdog to reset the whole system
with loading one suitable timeout value (usually 50ms) for the watchdog.In theory, we should implement the restart function in drivers/power/reset
subsystem to access the PMIC watchdog with regmap. When restart the system,
other cores will be stopped by IPI, but if other cores were accessing PMIC
with holding the regmap mutex lock, that will cause dead-lock issue if we
try to access the PMIC watchdog with regmap to restart the whole system.
Thus we can implement the restart function in ADI driver to avoid this
issue.Signed-off-by: Baolin Wang
Signed-off-by: Mark Brown -
We can move the hardware spinlock protection into the ADI read/write
functions to simplify the sprd_adi_transfer_one() function. Moreover
this optimization can also help to access PMIC without considering
the hardware spinlock using sprd_adi_read/write() functions.Signed-off-by: Baolin Wang
Signed-off-by: Mark Brown
25 Oct, 2017
1 commit
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When enabling the ADI hardware channels, if the channel id is 31,
then we will get one negative value -1 for BIT() macro, which will
write incorrect value to register.Fixes: 7e2903cb91df ("spi: Add ADI driver for Spreadtrum platform")
Reported-by: Dan Carpenter
Signed-off-by: Baolin Wang
Signed-off-by: Mark Brown
14 Oct, 2017
1 commit
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drivers/spi/spi-sprd-adi.c:409:3-8: No need to set .owner here. The core will do it.
Remove .owner field if calls are used which set it automatically
Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci
Fixes: 7e2903cb91df ("spi: Add ADI driver for Spreadtrum platform")
Signed-off-by: Fengguang Wu
Signed-off-by: Mark Brown
26 Sep, 2017
2 commits
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If of_get_property() fails then "size" is uninitialized and it leads to
a static checker warning:drivers/spi/spi-sprd-adi.c:288 sprd_adi_hw_init()
error: uninitialized symbol 'size'.We can silence the warning by re-arranging the order of these checks.
It obviously doesn't affect runtime at all.Signed-off-by: Dan Carpenter
Signed-off-by: Mark Brown -
devm_ioremap_resource() returns error pointers, it never returns NULL.
Fixes: 7e2903cb91df ("spi: Add ADI driver for Spreadtrum platform")
Signed-off-by: Dan Carpenter
Signed-off-by: Mark Brown
19 Sep, 2017
1 commit
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This patch adds ADI driver based on SPI framework for
Spreadtrum SC9860 platform.Signed-off-by: Baolin Wang
Signed-off-by: Mark Brown
