u-boot.git/drivers/core, branch v2017.05

dm: core: Ensure DMA regions start up with the cache clean

2017-04-13T20:44:49+00:00

There is a strange interaction with drivers which use DMA if the cache
starts off in a dirty state. Buffer space which the driver reads (but has
not previously written) can contain zero bytes from alloc_priv(). This can
cause corruption of the memory used by DMA for incoming data.

Fix this and add a comment to explain the problem.

This allows the dwc2 driver to work correctly with driver model, for
example.

Signed-off-by: Simon Glass

core/uclass: Print name of device in uclass_find_device_by_seq()

2017-04-13T20:44:49+00:00

uclass_find_device_by_seq() prints seq and req_seq when debugging is
enabled, but this information is not very useful by itself. Add the
name of he driver to this information. This improves debugging as it
shows which devices are being considered.

Signed-off-by: Alexandru Gagniuc 
Acked-by: Simon Glass

dm: core: Allow driver model to be disabled for TPL

2017-04-05T20:36:58+00:00

Since TPL often needs to be very very small it may not make sense to
enable driver model. Add an option for this.

This changes brings the 'rock' board under the TPL limit with gcc 4.9.

Signed-off-by: Simon Glass

dm: core: Add dm_remove_devices_flags() and hook it into device_remove()

2017-04-05T02:15:10+00:00

The new function dm_remove_devices_flags() is intented for driver specific
last-stage cleanup operations before the OS is started. This patch adds
this functionality and hooks it into the common device_remove()
function.

Drivers wanting to use this feature for some last-stage removal calls,
need to add one of the DM_REMOVE_xx flags to their driver .flags.

Signed-off-by: Stefan Roese 
Reviewed-by: Simon Glass

dm: core: Add flags parameter to device_remove()

2017-04-05T02:15:10+00:00

This patch adds the flags parameter to device_remove() and changes all
calls to this function to provide the default value of DM_REMOVE_NORMAL
for "normal" device removal.

This is in preparation for the driver specific pre-OS (e.g. DMA
cancelling) remove support.

Signed-off-by: Stefan Roese 
Cc: Simon Glass 
Acked-by: Simon Glass

regmap: use fdt address translation

2017-03-22T13:27:19+00:00

In the DTS, the addresses are defined relative to the parent bus. We need
to translate them to get the address as seen by the CPU core.

Signed-off-by: Jean-Jacques Hiblot

dm: core: Fix Handling of global_data moving in SPL

2017-03-22T13:27:19+00:00

commit 2f11cd9121658 ("dm: core: Handle global_data moving in SPL")
handles relocation of GD in SPL if spl_init() is called before
board_init_r(). So, uclass_root.next need not be initialized always
and accessing uclass_root.next->prev gives an abort. Update the
uclass_root only if it is available.

Reviewed-by: Simon Glass 
Signed-off-by: Lokesh Vutla

dm: Return actual bools in dm_fdt_pre_reloc

2017-03-16T22:03:47+00:00

Documentation says that we're returning true/false, not 1/0 so adapt
the function to return actual booleans.

Signed-off-by: Heiko Stuebner 
Acked-by: Simon Glass

dm: allow limiting pre-reloc markings to spl or tpl

2017-03-16T22:03:44+00:00

Right now the u-boot,dm-pre-reloc flag will make each marked node
always appear in both spl and tpl. But systems needing an additional
tpl might have special constraints for each, like the spl needing to
be very tiny.

So introduce two additional flags to mark nodes for only spl or tpl
environments and introduce a function dm_fdt_pre_reloc to automate
the necessary checks in code instances checking for pre-relocation
flags.

The behaviour of the original flag stays untouched and still marks
a node for both spl and tpl.

Signed-off-by: Heiko Stuebner 
Reviewed-by: Simon Glass 
Tested-by: Kever Yang

simple-bus: enable support for of-platdata

2017-02-08T13:12:16+00:00

Just do nothing in post_bind if of-platdata enabled,
for there is no dm_scan_fdt_dev().

Signed-off-by: Kever Yang 
Reviewed-by: Simon Glass 
Fixed subject line typo:
Signed-off-by: Simon Glass