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Commit Graph

1346 Commits

Author SHA1 Message Date
Tom Rini
227be29df3 Merge tag 'v2024.07-rc4' into next
Prepare v2024.070-rc4
2024-06-04 08:09:09 -06:00
Heiko Stuebner
702dc3c0b3 clk: rockchip: rk3588: Set SPLL frequency during SPL stage
All parts expect the SPLL to run at 702MHz. In U-Boot it's the SPLL_HZ
declaring this rate and in the kernel it's a fixed clock definition.

While everything is expecting 702MHz, the SPLL is not running that
frequency when coming from the bootrom though, instead it's running
at 351MHz and the vendor-u-boot just sets it to the expected frequency.

The SPLL itself is located inside the secure-BUSCRU and in theory
accessible as an SCMI clock, though this requires an unknown amount
of cooperation from trusted-firmware to set at a later stage, though
during the SPL stage we can still access the relevant CRU directly.

The SPLL is for example necessary for the DSI controllers to produce
output.

As the SPLL is "just" another rk3588 pll, just set the desired rate
directly during the SPL stage.

Tested on rk3588-rock5b and rk3588-tiger by reading back the PLL rate
and also observing working DSI output with this change.

Fixes: 6737771600 ("rockchip: rk3588: Add support for sdmmc clocks in SPL")
Suggested-by: Andy Yan <andy.yan@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko.stuebner@cherry.de>
Cc: Jonas Karlman <jonas@kwiboo.se>
Cc: Quentin Schulz <quentin.schulz@cherry.de>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
2024-05-24 17:58:59 +08:00
Tom Rini
03de305ec4 Restore patch series "arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"
As part of bringing the master branch back in to next, we need to allow
for all of these changes to exist here.

Reported-by: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: Tom Rini <trini@konsulko.com>
2024-05-20 13:35:03 -06:00
Tom Rini
d678a59d2d Revert "Merge patch series "arm: dts: am62-beagleplay: Fix Beagleplay Ethernet""
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay
Ethernet"' I failed to notice that b4 noticed it was based on next and
so took that as the base commit and merged that part of next to master.

This reverts commit c8ffd1356d, reversing
changes made to 2ee6f3a5f7.

Reported-by: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: Tom Rini <trini@konsulko.com>
2024-05-19 08:16:36 -06:00
Tom Rini
c8ffd1356d Merge patch series "arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"
Roger Quadros <rogerq@kernel.org> says:

Sync AM62 device tree files with Linux v6.9 and
add in the missing bits in -u-boot.dtsi to get CPSW
Ethernet working.

CI testing: https://github.com/u-boot/u-boot/pull/534
2024-05-13 09:15:51 -06:00
Tom Rini
1afa75c087 Merge patch series "arm: Add Analog Devices SC5xx Machine Type"
Greg Malysa <greg.malysa@timesys.com> says:

This series adds support for the ADI SC5xx machine type and includes two
core drivers that are required for being able to boot any board--a UART
driver, the gptimer driver which is used as a clock reference (CNTVCNT
is not supported on the armv7 sc5xx SoCs) and the clock tree driver. Our
corresponding Linux support relies on u-boot configuring the clocks
correctly before booting, so it is not possible to boot any board
without the CGU/CDU configuration happening here. There are also no
board files, device trees, or defconfigs included here, but some common
definitions that will be used to build board files currently are. The
sc5xx SoCs themselves include many armv7 families (sc57x, sc58x, and
sc594) all using an ARM Cortex-A5, and one armv8 family (sc598) indended
to be a drop-in replacement for the SC594 in terms of peripherals, with
a Cortex-A55 instead.

Some of the configuration code in dmcinit and clkinit is quite scary and
causes a lot of checkpatch violations. It is modified from code
initially provided by ADI, but it has not been fully rewritten. There's
a question of how important it is to clean up this code--it has some
quality violations, but it has been in use (including in production) for
over two years and is known to work for performing the low level SoC
initialization, while a rewrite might introduce timing or sequence bugs
that could take a significant amount of time to detect in the future.
2024-05-07 19:24:07 -06:00
Nathan Barrett-Morrison
16fe1118da drivers: clk: adi: Add in SC5XX-family clock driver
This adds support for the SC5XX clock trees which are required for reading
clock speeds on the SoCs. This is largely a port of the same support for
Linux, which has not yet been submitted upstream.

Co-developed-by: Greg Malysa <greg.malysa@timesys.com>
Signed-off-by: Greg Malysa <greg.malysa@timesys.com>
Co-developed-by: Ian Roberts <ian.roberts@timesys.com>
Signed-off-by: Ian Roberts <ian.roberts@timesys.com>
Signed-off-by: Vasileios Bimpikas <vasileios.bimpikas@analog.com>
Signed-off-by: Utsav Agarwal <utsav.agarwal@analog.com>
Signed-off-by: Arturs Artamonovs <arturs.artamonovs@analog.com>
Signed-off-by: Nathan Barrett-Morrison <nathan.morrison@timesys.com>
2024-05-07 19:24:00 -06:00
Tom Rini
92bb2cd42a clk: Remove <common.h> and add needed includes
Remove <common.h> from this driver directory and when needed
add missing include files directly.

Signed-off-by: Tom Rini <trini@konsulko.com>
2024-05-07 08:00:41 -06:00
Jonas Karlman
94e2844c8c clk: rockchip: rk3328: Add SCLK_USB3OTG_REF support
The SCLK_USB3OTG_REF clocks is used as reference clock for USB3 block.

Add simple support to get rate of SCLK_USB3OTG_REF clocks to fix
reference clock period configuration.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
2024-05-07 15:56:10 +08:00
Jonas Karlman
add8cef67b clk: rockchip: rk3399: Add SCLK_USB3OTGx_REF support
The SCLK_USB3OTGx_REF clocks is used as reference clock for USB3 block.

Add simple support to get rate of SCLK_USB3OTGx_REF clocks to fix
reference clock period configuration.

Also replace use of 24000000 with the OSC_HZ constant.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Quentin Schulz <quentin.schulz@theobroma-systems.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
2024-05-07 15:56:09 +08:00
Jonas Karlman
e801d05bea clk: rockchip: rk3399: Improve support for SCLK_PCIEPHY_REF clock
rk3399-nanopi-4.dtsi try to set parent of and set rate to 100 MHz of the
SCLK_PCIEPHY_REF clock.

The existing enable/disable ops for SCLK_PCIEPHY_REF currently force
use of 24 MHz parent and rate.

Add improved support for setting parent and rate of the pciephy refclk
to driver to better support assign-clock props for pciephy refclk in DT.

This limited implementation only support setting 24 or 100 MHz rate,
and expect npll and clk_pciephy_ref100m divider to use default values.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
2024-05-07 15:56:09 +08:00
Jonas Karlman
24463b1583 clk: rockchip: rk3399: Add dummy support for ACLK_VDU clock
rk3399.dtsi from linux v5.19 and newer try to set VDU clock rate to
400 MHz using an assigned-clock-rates prop of the CRU node.

U-Boot does not use or need this clock so add dummy support for getting
and setting ACLK_VDU clock rate to allow CRU driver to be loaded with an
updated rk3399.dtsi.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
2024-05-07 15:56:08 +08:00
Jonas Karlman
fc4572ae75 clk: rockchip: rk3399: Rename SCLK_DDRCLK to SCLK_DDRC
Sync rk3399-cru.h with one from Linux kernel v6.2+ and fix use of the
SCLK_DDRCLK name that was only used by U-Boot.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
2024-05-07 15:56:08 +08:00
Tom Rini
6a7185887b global: Make <asm/global_data.h> include <asm/u-boot.h>
This follows the example of RISC-V where <asm/global_data.h> includes
<asm/u-boot.h> directly as "gd" includes a reference to bd_info already
and so the first must include the second anyhow. We then remove
<asm/u-boot.h> from all of the places which include references to "gd"
an so have <asm/global_data.h> already.

Signed-off-by: Tom Rini <trini@konsulko.com>
2024-05-06 15:07:48 -06:00
Jonas Karlman
0b6afc3993 clk: rockchip: rk356x: Fix set rate of SCLK_SFC clock
The SCLK_SFC can be set to a rate of 24, 50, 75, 100, 125 or 150 MHz.

However, clk_set_rate() will fail unless one of those exact rates are
used, and with newer and updated device tree files that contain
spi-max-frequency values that does not exactly match these rates use of
SPI flash may fail.

Fix this by using the highest possible rate that exceeds or is equal to
the requested rate.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
2024-04-26 15:47:04 +08:00
Jonas Karlman
80274d1b64 clk: rockchip: rk3588: Add REF_CLK_USB3OTGx support
The REF_CLK_USB3OTGx clocks is used as reference clock for USB3 block.

Add simple support to get rate of REF_CLK_USB3OTGx clocks to fix
reference clock period configuration.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Quentin Schulz <quentin.schulz@theobroma-systems.com>
Acked-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
2024-04-26 15:47:04 +08:00
Jonas Karlman
19bf563304 clk: rockchip: rk356x: Add CLK_USB3OTGx_REF support
The CLK_USB3OTGx_REF clocks is used as reference clock for USB3 block.

Add simple support to get rate of CLK_USB3OTGx_REF clocks to fix
reference clock period configuration.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Acked-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
2024-04-26 15:47:03 +08:00
Jonas Karlman
c5b8eaff63 rockchip: rk3308: Move cru and grf include files to arch-rockchip
Move cru_rk3308.h and grf_rk3308.h to arch-rockchip to match path used
for all other Rockchip SoCs.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
2024-04-26 15:47:03 +08:00
Jonas Karlman
32d6fdb334 clk: rockchip: rk3308: Add dummy support for USB480M clock
Add dummy support for setting parent of USB480M clock.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
2024-04-26 15:47:03 +08:00
Finley Xiao
d3e35e71ec clk: rockchip: rk3308: Add support for SCLK_RTC32K clock
Add support to get and set the SCLK_RTC32K clock rate.

Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
[jonas@kwiboo.se: Update commit message]
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
2024-04-26 15:47:03 +08:00
Sumit Garg
6e992a6bc8 apq8016: Add support for UART1 clocks and pinmux
SE HMIBSC board uses UART1 as the main debug console, so add
corresponding clocks and pinmux support. Along with that update
instructions to enable clocks for debug UART support.

Reviewed-by: Caleb Connolly <caleb.connolly@linaro.org>
Signed-off-by: Sumit Garg <sumit.garg@linaro.org>
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
2024-04-23 13:29:22 +02:00
Caleb Connolly
99e791746f clk/qcom: ipq4019: return valid rate when setting UART clock
clk_set_rate() should return the clock rate that was set. The IPQ4019
clock driver doesn't set any rates yet but it should still return the
expected value so that drivers can work properly.

For a baud rate of 115200 with an expected bit clock divisor of 16, the
clock rate should be 1843200 so return that frequency.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
2024-04-23 13:29:15 +02:00
Caleb Connolly
8a4e043305 clk/qcom: apq8016: return valid rate when setting UART clock
The clk_init_uart() helper always returns 0, but we're meant to return a
real clock rate. Given that we hardcode 115200 baud, just return the
clock rate that we set.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
2024-04-23 13:29:14 +02:00
Neil Armstrong
c26fd49e90 clk: qcom: Add SM8650 clock driver
Add the GCC and TCSRCC clock driver for the SM8650 SoC.

The GCC driver uses the clk-qcom infrastructure to support GDSCs,
Resets and gates. While the TCSRCC is a simpler clock driver which
only supports gates.

The GCC enable and set_rate callbacks contains some tweaks to
setup clocks for Debug UART, SDCard controller and USB.

The TCSRCC gates returns the XO frequency, which is used by the
Synopsys eUSB2 driver to determine the PHY configuration.

Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Caleb Connolly <caleb.connolly@linaro.org>
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
2024-04-23 13:29:11 +02:00
Neil Armstrong
458123ca62 clk: qcom: Add SM8550 clock driver
Add the GCC and TCSRCC clock driver for the SM8550 SoC.

The GCC driver uses the clk-qcom infrastructure to support GDSCs,
Resets and gates. While the TCSRCC is a simpler clock driver which
only supports gates.

The GCC enable and set_rate callbacks contains some tweaks to
setup clocks for Debug UART, SDCard controller and USB.

The TCSRCC gates returns the XO frequency, which is used by the
Synopsys eUSB2 driver to determine the PHY configuration.

Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Caleb Connolly <caleb.connolly@linaro.org>
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
2024-04-23 13:29:10 +02:00
Caleb Connolly
6a0b9d887e clk/qcom: sdm845: enable SDCC2 core clock
Allow setting the clock rate for the SD card core clock. This is
required for SD card support on SDM845 devices.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
2024-04-23 13:29:08 +02:00
Caleb Connolly
dcd688229c clk/qcom: add driver for sm8250 GCC
Add a clock driver for the SM8250 SoC. This driver can enable necessary
clocks for UART, UFS, USB, and MMC.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
2024-04-23 13:29:05 +02:00
Caleb Connolly
60b306e12f clk/qcom: add driver for sm6115 GCC
Add a driver for the clock controller in the SM6115 SoC, this is used in
the QRB4210 RB2 board.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
2024-04-23 13:29:04 +02:00
Caleb Connolly
c78210fce7 clk/qcom: add driver for qcm2290 GCC
Add a clock driver for the QCM2290 SoC which is used in the QRB2210 RB1
board.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
2024-04-23 13:29:04 +02:00
Tom Rini
9552923ded Merge patch series "Kconfig: some cleanups"
Michal Simek <michal.simek@amd.com> says:

I looked as cleaning up some dependencies and I found that qconfig is
reporting some issues. This series is fixing some of them. But there are
still some other pending. That's why please go and fix them if they are
related to your board.

UTF-8: I am using uni2ascii -B < file to do conversion. When you run it in
a loop you will find some other issue with copyright chars or some issues
in files taken from the Linux kernel like DTs. They should be likely fixed
in the kernel first.
Based on discussion I am ignoring names too.
2024-04-22 11:01:56 -06:00
Michal Simek
81f3a665ab common: Convert *.c/h from UTF-8 to ASCII enconfing
Convert UTF-8 chars to ASCII in cases where make sense. No Copyright or
names are converted.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Acked-by: Marek Behún <kabel@kernel.org>
2024-04-22 11:01:48 -06:00
Michal Simek
d20bcbaa65 Kconfig: Remove trailing whitespace in its prompt
All errors are generated by ./tools/qconfig.py -b -j8 -i whatever.
Error look like this:
warning: SPL_CLK_CCF (defined at drivers/clk/Kconfig:59) has leading or
trailing whitespace in its prompt

Signed-off-by: Michal Simek <michal.simek@amd.com>
2024-04-22 11:01:48 -06:00
Tom Rini
1dd659fd62 Merge tag 'video-20240421' of https://source.denx.de/u-boot/custodians/u-boot-video
CI: https://source.denx.de/u-boot/custodians/u-boot-video/-/pipelines/20466

- simple_panel: support timing parsing from EDID
- dw_hdmi: fix gcc-14 compiler warnings
- dw_hdmi: support vendor PHY for HDMI
- rockchip: add Rockchip INNO HDMI PHY driver
- rockchip: RK3328 HDMI and VOP support
- evb-rk3328: enable vidconsole support
- Tegra DC and DSI improvements and Tegra 114 support
- add LG LG070WX3 MIPI DSI panel driver
- add Samsung LTL106HL02 MIPI DSI panel driver
- add Toshiba TC358768 RGB to DSI bridge support
- add basic support for the Parade DP501 transmitter
- Tegra 3 panel and bridge driver improvements
- simplefb: modernise DT parsing
- fdt_simplefb: Enumerate framebuffer info from video handoff
- preserve framebuffer if SPL is passing video hand-off
- fdt_support: allow reserving FB region without simplefb
2024-04-21 08:54:20 -06:00
Jagan Teki
f7f4789814 clk: rk3328: Add get hdmiphy clock
Add support to get the hdmiphy clock for RK3328 PCLK_HDMIPHY.

Signed-off-by: Jagan Teki <jagan@edgeble.ai>
2024-04-21 09:07:00 +02:00
Jagan Teki
92edae779f clk: rockchip: rk3328: Add VOP clk support
VOP get and set clock would needed for VOP drivers.

Add support for it.

Signed-off-by: Jagan Teki <jagan@edgeble.ai>
2024-04-21 09:07:00 +02:00
Tim Harvey
2b3310ef13 clk: imx8mm: Add support for PCIe clocks
Add support for PCIe clocks required to enable PCIe support on
iMX8MM SoC.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Reviewed-by: Marek Vasut <marex@denx.de>
2024-04-20 00:37:51 -03:00
Peng Fan
8ecb093194 clk: imx93: fix anatop base
The PLL clk needs use anatop base, otherwise wrong PLL address will
be used.

Fixes: 9c153e4666 ("clk: imx: add i.MX93 CCF driver")
Signed-off-by: Peng Fan <peng.fan@nxp.com>
2024-04-15 08:09:41 -03:00
Tom Rini
eff62097f6 Merge tag 'qcom-next-2024Apr04' of https://source.denx.de/u-boot/custodians/u-boot-snapdragon
- Ethernet, i2c, and USB support are now enabled by default
- The clock driver gets some bug fixes and cleanup
- Invalid FDTs are now properly detected in board_fdt_blob_setup().
- The pinctrl driver gains preparatory support for per-pin function
  muxes.
- Support is added for two generations of Qualcomm HighSpeed USB PHY
- A power domain driver is added for the Globall Distributed Switch
  Controllers on the GCC hardware block.
- SDM845 gains USB host mode support.
- OF_LIVE is enabled by default for Qualcomm platforms
- Some U-Boot devicetree compatibility fixups are added during init to
  improve compatbility with upstream DT.
2024-04-05 17:23:13 -04:00
Tom Rini
b4b98adb99 Merge branch 'master' of https://source.denx.de/u-boot/custodians/u-boot-samsung 2024-04-05 17:21:37 -04:00
Caleb Connolly
491a981577 clk/qcom: sdm845: add USB clocks
Most devices only initialise the USB clocks for us if we boot via
"fastboot boot", add the missing clock configuration to get both USB
ports working regardless of the bootloader state.

Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
2024-04-04 17:46:46 +02:00
Caleb Connolly
f2c3708b9c clk/qcom: sdm845: add gdscs
Define the GDSC power domains for SDM845.

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
2024-04-04 17:46:46 +02:00
Caleb Connolly
d33d4e0a45 clk/qcom: use offsets for RCG registers
The RCG registers always have the same offsets, so only store the base
CMD register address and calculate the others relative to that.

Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
2024-04-04 17:46:46 +02:00
Caleb Connolly
8670cb405e mach-snapdragon: disable power-domains for pre-reloc drivers
Some devices like the UART and clock controller reference an RPM(h)
power domain. We don't support this device in U-Boot, so add
DM_FLAG_DEFAULT_PD_CTRL_OFF to tell DM core not to try and enable the
power domain.

Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
2024-04-04 17:46:46 +02:00
Volodymyr Babchuk
054eb87743 clk: qcom: clear div mask before assigning a new divider
The current behaviour does a bitwise OR of the previous and new
divider values, this is wrong as some bits may be set already. We
need to clear all the divider bits before applying new ones.

This fixes potential issue with 1Gbit ethernet on SA8155P-ADP boards.

Signed-off-by: Volodymyr Babchuk <volodymyr_babchuk@epam.com>
Reviewed-by: Caleb Connolly <caleb.connolly@linaro.org>
Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
[caleb: minor wording fix]
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
2024-04-04 17:46:45 +02:00
Volodymyr Babchuk
b563e766fe clk: qcom: add support for power domains uclass
Now sub-drivers for particular SoCs can register them as power domain
drivers. This is needed for upcoming SM8150 support, because it needs
to power up the Ethernet module.

Signed-off-by: Volodymyr Babchuk <volodymyr_babchuk@epam.com>
Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
Reviewed-by: Caleb Connolly <caleb.connolly@linaro.org>
[caleb: make ARCH_SNAPDRAGON select POWER_DOMAIN]
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
2024-04-04 17:46:45 +02:00
Sam Protsenko
1751ba9a3b clk: exynos: Add CMU_CORE and CMU_HSI for Exynos850
CMU_CORE generates clocks needed for eMMC enablement, and CMU_HSI
provides clocks for SD card and USB. Most of the code is copied from the
Linux kernel counterpart driver.

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2024-03-26 18:56:55 +09:00
Sam Protsenko
f77780b0ee clk: exynos: Fix incorrect clock lookup for non-top CMUs
Samsung clock drivers usually define the clock indices that are unique
per one CMU, but are not unique across all CMUs. That is, clock indices
start from 1 for each CMU, as provided in CMU bindings header. The way
the clock lookup via clk_get_by_index() works at the moment is by using
clk_of_xlate_default(), which returns globally non-unique clock ids for
for clocks registered with Samsung CCF API, which leads to incorrect
clocks being obtained. One way to fix that would be to make all clock
ids defined in the bindings header unique, but it'd make it incompatible
with Linux kernel bindings header. A better way to solve this issue is
to calculate the global clock id and use it when registering a clock
with clk_dm() and when obtaining it, in a custom .of_xlate function.

This patch adds an API for such mapping calculation, introducing the
necessary modifications to CMU registering functions in Samsung CCF.
Exynos850 clock driver (the only driver that uses Samsung CCF at the
moment) is modified accordingly, as it uses the changed API. So the
clock lookup with clk-exynos850.c driver is also fixed here.

The global clock id is calculated from CMU id and local clock id in
SAMSUNG_TO_CLK_ID() macro like this:

    clk_id_global = cmu_id * 256 + clk_id_local

leaving a range of up to 256 clocks for each CMU. Then this mapping
macro is used in clk_dm() to register clocks using their global ids, and
in .of_xlate() to lookup the clock by its local id correctly. Because
.of_xlate() operation has a separate function for each CMU, it "knows"
the correct way of finding the correct clk_id_global by provided
clk_id_local.

Fixes: ff3e8b8c6c ("clk: exynos: Add Samsung clock framework")
Fixes: a36cc5e3ef ("clk: exynos: Add Exynos850 clock driver")
Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2024-03-26 18:56:55 +09:00
Sam Protsenko
f4675601a2 clk: exynos: Don't expose prototypes for not used functions
Samsung CCF is meant to be used from the clock drivers by calling the
CMU registration API, i.e.:
  - samsung_cmu_register_one() -- for top-level CMU
  - samsung_register_cmu() -- for the rest of CMUs

Functions for registering separate clocks is probably not going to be
very useful, and isn't used at the moment. Remove prototypes of those
functions to make the Samsung CCF interface more compact and clear.

No functional change.

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2024-03-26 18:56:55 +09:00
Sam Protsenko
757242bccf clk: exynos: Re-arrange clocks in Exynos850 CMU_TOP
Group CMU_TOP clocks to make it easier to add the support for more CMUs.
No functional change.

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2024-03-26 18:56:55 +09:00
Tom Rini
ab8d9ca304 Merge tag 'v2024.04-rc5' into next
Prepare v2024.04-rc5
2024-03-25 22:15:47 -04:00