Commit graph

65 commits

Author SHA1 Message Date
Ludovic Desroches
eb1ed2b19b clk: at91: clk-generated: select absolute closest rate
To get the same behavior as the Linux driver, instead of selecting
the closest inferior rate, select the closest inferior or superior
rate

Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com>
Signed-off-by: Wenyou Yang <wenyou.yang@microchip.com>
2017-11-29 22:30:50 -05:00
Wenyou Yang
9e0eb01239 clk: at91: Kconfig: fix the dependency of AT91_UTMI
What the AT91_UTMI depends on SPL_DM isn't right. AT91_UTMI is not
only used in SPL, also in other place, even if SPL_DM isn't enabled.

Signed-off-by: Wenyou Yang <wenyou.yang@microchip.com>
2017-11-29 22:30:50 -05:00
Wenyou Yang
e7c831543a clk: at91: utmi: Set the reference clock frequency
By default, it is assumed that the UTMI clock is generated from
a 12 MHz reference clock (MAINCK). If it's not the case, the FREQ
field of the SFR_UTMICKTRIM has to be updated to generate the UTMI
clock in the proper way.

The UTMI clock has a fixed rate of 480 MHz. In fact, there is no
multiplier we can configure. The multiplier is managed internally,
depending on the reference clock frequency, to achieve the target
of 480 MHz.

The patch is cloned from the patch of mailing-list:
	[PATCH v2] clk: at91: utmi: set the mainck rate

Signed-off-by: Wenyou Yang <wenyou.yang@microchip.com>
[trini: Depend on SPL_DM]
Signed-off-by: Tom Rini <trini@konsulko.com>
2017-09-14 16:02:29 -04:00
Simon Glass
a4e0ef50da clk: Modify xlate() method for livetree
Update the xlate() method to use ofnode_phandle_args instead of the fdtdec
variant. This will allow drivers to support a live device tree.

Signed-off-by: Simon Glass <sjg@chromium.org>
2017-06-01 07:03:14 -06:00
Simon Glass
45a26867e8 dm: core: Update device_bind_driver_to_node() to use ofnode
Adjust this function to us an ofnode instead of an offset, so it can be
used with livetree. This involves updating all callers.

Signed-off-by: Simon Glass <sjg@chromium.org>
2017-06-01 07:03:08 -06:00
Simon Glass
a821c4af79 dm: Rename dev_addr..() functions
These support the flat device tree. We want to use the dev_read_..()
prefix for functions that support both flat tree and live tree. So rename
the existing functions to avoid confusion.

In the end we will have:

   1. dev_read_addr...()    - works on devices, supports flat/live tree
   2. devfdt_get_addr...()  - current functions, flat tree only
   3. of_get_address() etc. - new functions, live tree only

All drivers will be written to use 1. That function will in turn call
either 2 or 3 depending on whether the flat or live tree is in use.

Note this involves changing some dead code - the imx_lpi2c.c file.

Signed-off-by: Simon Glass <sjg@chromium.org>
2017-06-01 07:03:01 -06:00
Simon Glass
9d922450aa dm: Use dm.h header when driver mode is used
This header includes things that are needed to make driver build. Adjust
existing users to include that always, even if other dm/ includes are
present

Signed-off-by: Simon Glass <sjg@chromium.org>
2017-06-01 06:57:52 -06:00
Wenyou Yang
3fea809b42 clk: at91: Align the at91 pmc's compatibles
Align the at91 pmc's compatibles with kernel.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andreas Bießmann <andreas@biessmann.org>
2017-05-09 12:14:15 -06:00
Wenyou Yang
a9513d47dc clk: at91: Align clk-master compatibles with kernel
Add the compatible "atmel,at91rm9200-clk-master" to align with
the kernel.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-05-09 12:14:15 -06:00
Wenyou Yang
bb1adf2943 clk: at91: Enhance the peripheral clock
Enhance the peripheral clock to support both at9sam9x5's and
at91rm9200's peripheral clock via the different compatibles.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-05-09 12:14:15 -06:00
Heiko Stübner
27326c7ee2 dm: allow limiting pre-reloc markings to spl or tpl
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 <heiko@sntech.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Kever Yang <kever.yang@rock-chips.com>
2017-03-16 16:03:44 -06:00
Simon Glass
e160f7d430 dm: core: Replace of_offset with accessor
At present devices use a simple integer offset to record the device tree
node associated with the device. In preparation for supporting a live
device tree, which uses a node pointer instead, refactor existing code to
access this field through an inline function.

Signed-off-by: Simon Glass <sjg@chromium.org>
2017-02-08 06:12:14 -07:00
Wenyou Yang
6cadaa046b clk: at91: Improve the clock implementation
For the peripheral clock, provide the clock ops for the clock
provider, such as spi0_clk. The .of_xlate is to get the clk->id,
the .enable is to enable the spi0 peripheral clock, the .get_rate
is to get the clock frequency.

The driver for periph32ck node is responsible for recursively
binding its children as clk devices, not provide the clock ops.

So do the generated clock and system clock.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
2016-10-28 18:37:14 +02:00
Wenyou Yang
b892b054b1 clk: at91: Fix at91-pmc and at91-sckc's class ID
The at91-pmc and at91-sckc aren't the clock providers, change their
class ID from UCLASS_CLK to UCLASS_SIMPLE_BUS, they also don't
need to bind the child nodes explicitly, the .post_bind callback
of simple_bus uclass will do it for them.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-10-28 18:37:14 +02:00
Wenyou Yang
9e5935c04e clk: at91: Add clock driver
The patch is referred to at91 clock driver of Linux, to make
the clock node descriptions in DT aligned with the Linux's.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-08-15 22:12:00 +02:00