Commit graph

28 commits

Author SHA1 Message Date
Patrick Delaunay
4de076ed09 stm32mp1: clk: use gd to store frequency information
Use existing gd structure to store frequency information
which can be used in drivers or arch without new request.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-08-27 11:19:23 +02:00
Patrick Delaunay
7879a7d09c stm32mp1: clk: remove debug traces
Remove many debug trace.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-08-27 11:19:23 +02:00
Patrick Delaunay
fd7fe1bb8d clk: stm32mp1: Add RTC clock entry
Add RTCAPB and RTC clock support.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-22 11:04:52 +02:00
Patrick Delaunay
67d74ce2fa clk: clk_stm32mp1: Fix warnings when compiling with W=1
This patch solves the following warnings:

drivers/clk/clk_stm32mp1.c: In function 'stm32mp1_clk_get_parent':
warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (i = 0; i < ARRAY_SIZE(stm32mp1_clks); i++)
                ^
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-12 11:50:55 +02:00
Patrick Delaunay
dfda7d4c83 stm32mp1: syscon: remove stgen
Reduce difference with kernel Linux device tree.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-12 11:18:53 +02:00
Patrick Delaunay
f6ccdda126 stm32mp1: clk: use the correct identifier for ethck
ETHCK_K is the identifier the kernel clock for ETH in kernel
binding, selected by ETHKSELR / gated by ETHCKEN = BIT(7).
U-Boot driver need to use the same identifier, so change ETHCK
to ETHCK_K.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Christophe Roullier <christophe.roullier@st.com>
2019-06-06 17:40:18 +02:00
Patrice Chotard
248278d7f7 clk: stm32mp1: Add SPI1 clock entry
Add missing SPI1 clock needed by SPI1 instance.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
2019-06-06 17:40:17 +02:00
Patrick Delaunay
c3e828bff2 clk: stm32mp1: add set_rate for DDRPHYC clock
Add the DDRPHYC support for clk_set_rate, used in DDR interactive mode

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-05-23 11:36:47 +02:00
Patrick Delaunay
abf2678f0f stm32mp1: add trusted boot with TF-A
Add support of trusted boot, using TF-A as first stage bootloader,
The boot sequence is
  BootRom >=> TF-A.stm32 (clock & DDR) >=> U-Boot.stm32

The TF-A monitor provides secure monitor with support of SMC
- proprietary to manage secure devices (BSEC for example)
- PSCI for power

The same device tree is used for STMicroelectronics boards with
basic boot and with trusted boot.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-04-12 16:09:13 +02:00
Patrick Delaunay
bbd108a082 clk: stm32mp1: correctly handle Clock Spreading Generator
To activate the csg option, the driver need to set the bit2
of PLLNCR register = SSCG_CTRL: Spread Spectrum Clock Generator
of PLLn enable.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-02-09 07:50:57 -05:00
Patrick Delaunay
8d6310aa0b clk: stm32mp1: add debug information
Add support of clk dump command and
display information during probe (under CONFIG_DISPLAY_CPUINFO).

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-02-09 07:50:57 -05:00
Patrick Delaunay
f3a23c2609 clk: stm32mp1: recalculate counter when switching freq
Because stgen is initialized with HSI clock, we need to
recalculate the counter when changing frequency.

Signed-off-by: Lionel Debieve <lionel.debieve@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-02-09 07:50:56 -05:00
Patrick Delaunay
63201281e5 clk: stm32mp1: correct access to RCC_OCENSETR/RCC_OCENCLRR
Remove unnecessary setbits on set/clear registers.
Avoid to deactivate HSI with HSE.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-02-09 07:50:56 -05:00
Patrick Delaunay
d661f61847 clk: stm32mp1: add IPCC clock
Add support for enable/disable of IPCC clock using AHB3 registers

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-02-09 07:50:56 -05:00
Patrick Delaunay
86617dd140 clk: stm32mp1: no more get ck_usbo_48m in device tree
Remove support of ck_usbo_48m clock node in device tree,
but force 48MHz frequency to prepare alignment
with kernel device tree.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-02-09 07:50:55 -05:00
Benjamin Gaignard
283bcd9a34 clk: stm32: add hardware spinlock clock
Add hardware spinlock in the list of the clocks.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
2018-12-06 23:26:32 -05:00
Patrick Delaunay
d219415544 stm32mp1: clk: support digital bypass
HSE and LSE bypass shall support both analog and digital signals.
This patch add a way to select digital bypas case in the device tree
and set the associated bit DIGBYP in RCC_BDCR and RCC_OCEN register
during clock tree initialization.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2018-07-20 15:55:07 -04:00
Patrick Delaunay
5b25eb9f22 stm32mp1: clk: add ADC clock gating
Add ADC clock gating, that may be used by STM32 ADC.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2018-07-20 15:55:07 -04:00
Patrick Delaunay
04365530c0 stm32mp1: clk: update Ethernet clock gating
Alignment with kernel clock driver

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2018-07-20 15:55:07 -04:00
Patrick Delaunay
88fa34df9f stm32mp1: clk: add LDTC and DSI clock support
This patch add clk_enable/clk_disable/clk_get_rate support for
- DSI_PX
- LTDC_PX
- DSI_K (only get rate)

These clocks are needed for LTDC and DSI drivers with latest device tree.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2018-07-20 15:55:07 -04:00
Patrick Delaunay
6110503f8f stm32mp1: clk: add common function pll_get_fvco
the function compute the VCO PLL freq, used in
- stm32mp1_read_pll_freq()
- pll_set_rate()

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
# Conflicts:
#	drivers/clk/clk_stm32mp1.c
2018-07-20 15:55:06 -04:00
Patrick Delaunay
c2fa5dc82d stm32mp1: clk: define RCC_PLLNCFGR2_SHIFT macro
This patch define RCC_PLLNCFGR2_SHIFT to reuse it in
the pll function for set rate.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Vikas Manocha <vikas.manocha@st.com>
2018-07-20 15:55:06 -04:00
Patrick Delaunay
d090cbab64 misc: stm32: Add STM32MP1 support
Following next kernel rcc bindings, we must use a MFD
RCC driver which is able to bind both clock and reset
drivers.

We can reuse and adapt RCC MFD driver already available
for MCU SoCs (F4/F7/H7).

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2018-07-20 15:55:05 -04:00
Fabrice Gasnier
f198bbac66 clk: stm32mp1: Add VREF clock gating
Add VREF clock gating, that may be used by STM32 VREFBUF regulator.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
2018-05-08 09:07:39 -04:00
Tom Rini
4549e789c1 SPDX: Convert all of our multiple license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have multiple licenses (in
these cases, dual license) declared in the SPDX-License-Identifier tag.
In this case we change from listing "LICENSE-A LICENSE-B" or "LICENSE-A
or LICENSE-B" or "(LICENSE-A OR LICENSE-B)" to "LICENSE-A OR LICENSE-B"
as per the Linux Kernel style document.  Note that parenthesis are
allowed so when they were used before we continue to use them.

Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 10:24:31 -04:00
Patrick Delaunay
938e0e3f6e clock: stm32mp1: add stgen clock source change support
The STGEN is the clock source for the Cortex A7 arch timer.
So after modification of its frequency, CP15 cntfreq is updated
and a new timer init is performed.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2018-04-06 20:45:28 -04:00
Patrick Delaunay
266fa4df00 clk: stm32mp1: add clock tree initialization
add binding and code for clock tree initialization from device tree

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2018-03-19 16:14:22 -04:00
Patrick Delaunay
a6151916cb clk: add driver for stm32mp1
add RCC clock driver for STMP32MP157
- base on driver model = UCLASS_CLK
- support ops to enable, disable and get rate
  of all SOC clock needed by U-Boot

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2018-03-19 16:14:22 -04:00