linux.git/drivers/soc/ti, branch v5.5

soc: ti: wkup_m3_ipc: Fix race condition with rproc_boot

2019-12-17T23:18:36+00:00

Any user of wkup_m3_ipc calls wkup_m3_ipc_get to get a handle and this
checks the value of the static variable m3_ipc_state to see if the
wkup_m3 is ready. Currently this is populated during probe before
rproc_boot has been called, meaning there is a window of time that
wkup_m3_ipc_get can return a valid handle but the wkup_m3 itself is not
ready, leading to invalid IPC calls to the wkup_m3 and system
instability.

To avoid this, move the population of the m3_ipc_state variable until
after rproc_boot has succeeded to guarantee a valid and usable handle
is always returned.

Reported-by: Suman Anna 
Signed-off-by: Dave Gerlach 
Acked-by: Santosh Shilimkar 
Signed-off-by: Tony Lindgren

soc: ti: omap-prm: fix return value check in omap_prm_probe()

2019-10-29T16:57:56+00:00

In case of error, the function devm_ioremap_resource() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check should
be replaced with IS_ERR().

Fixes: 3e99cb214f03 ("soc: ti: add initial PRM driver with reset control support")
Signed-off-by: Wei Yongjun 
Signed-off-by: Santosh Shilimkar

soc: ti: omap-prm: add omap5 PRM data

2019-10-09T15:55:40+00:00

Add PRM instance data for omap5 family of SoCs. Initially this is just
used to provide reset support.

Reviewed-by: Tony Lindgren 
Signed-off-by: Tero Kristo 
Signed-off-by: Santosh Shilimkar

soc: ti: omap-prm: add am4 PRM data

2019-10-09T15:55:40+00:00

Add PRM instance data for am4 family of SoCs. Initially this is just
used to provide reset support.

Reviewed-by: Tony Lindgren 
Signed-off-by: Tero Kristo 
Signed-off-by: Santosh Shilimkar

soc: ti: omap-prm: add dra7 PRM data

2019-10-09T15:55:39+00:00

Add PRM instance data for dra7 family of SoCs. Initially this is just
used to provide reset support.

Reviewed-by: Tony Lindgren 
Signed-off-by: Tero Kristo 
Signed-off-by: Santosh Shilimkar

soc: ti: omap-prm: add data for am33xx

2019-10-09T15:55:39+00:00

Add PRM instance data for AM33xx SoC. Includes some basic register
definitions and reset data for now.

Reviewed-by: Tony Lindgren 
Signed-off-by: Tero Kristo 
Signed-off-by: Santosh Shilimkar

soc: ti: omap-prm: add omap4 PRM data

2019-10-09T15:55:38+00:00

Add PRM data for omap4 family of SoCs. Initially this is just used to
provide reset support.

Reviewed-by: Tony Lindgren 
Signed-off-by: Tero Kristo 
Signed-off-by: Santosh Shilimkar

soc: ti: omap-prm: add support for denying idle for reset clockdomain

2019-10-09T15:55:38+00:00

TI SoCs hardware reset signals require the parent clockdomain to be
in force wakeup mode while de-asserting the reset, otherwise it may
never complete. To support this, add pdata hooks to control the
clockdomain directly.

Signed-off-by: Tero Kristo 
Reviewed-by: Tony Lindgren 
Signed-off-by: Santosh Shilimkar

soc: ti: omap-prm: poll for reset complete during de-assert

2019-10-09T15:55:37+00:00

Poll for reset completion status during de-assertion of reset, otherwise
the IP in question might be accessed before it has left reset properly.

Signed-off-by: Tero Kristo 
Reviewed-by: Philipp Zabel 
Reviewed-by: Tony Lindgren 
Signed-off-by: Santosh Shilimkar

soc: ti: add initial PRM driver with reset control support

2019-10-09T15:55:36+00:00

Add initial PRM (Power and Reset Management) driver for TI OMAP class
SoCs. Initially this driver only supports reset control, but can be
extended to support rest of the functionality, like powerdomain
control, PRCM irq support etc.

Signed-off-by: Tero Kristo 
Reviewed-by: Philipp Zabel 
Reviewed-by: Tony Lindgren 
Signed-off-by: Santosh Shilimkar