summaryrefslogtreecommitdiff
path: root/drivers/power/domain
AgeCommit message (Collapse)Author
4 daysMerge patch series "pinctrl: add support of Airoha SoCs"Tom Rini
Mikhail Kshevetskiy <[email protected]> says: This patch series add pin controller and gpio driver support for EN7523/ AN7581/AN7583 SoCs. The driver based on official linux airoha pinctrl and gpio driver with Matheus Sampaio Queiroga changes. The original Matheus Sampaio Queiroga driver can be taken from the repo: https://sirherobrine23.com.br/airoha_en7523/kernel/src/branch/airoha_en7523_pinctrl Additionally in the EN7523 case the patches removes existing gpio dts nodes and replaces them with pinctrl node. It should not be very dangerous, because: * No official EN7523 gpio support present in U-Boot * Legacy Linux EN7523 GPIO driver is mostly abandoned * The same driver is planned for upstream linux/openwrt This patchset includes bitfield.h patches created for Linux kernel by Geert Uytterhoeven. It suits U-Boot fine. I preserve original author and original commit messages. Please note me, if there is a better way. The patches were tested on EN7523/AN7581/AN7583 boards. Link: https://lore.kernel.org/r/[email protected]
4 dayspower: domain: renesas-r8a78000: Convert to common field_{get, prep}() helpersMikhail Kshevetskiy
Drop the driver-specific field_get() and field_prep() macros, in favor of the globally available variants from <linux/bitfield.h>. Signed-off-by: Mikhail Kshevetskiy <[email protected]>
4 dayspower: domain: renesas-r8a78000: #undef field_{get, prep}() before definitionMikhail Kshevetskiy
Prepare for the advent of globally available common field_get() and field_prep() macros by undefining the symbols before defining local variants. This prevents redefinition warnings from the C preprocessor when introducing the common macros later. Signed-off-by: Mikhail Kshevetskiy <[email protected]>
6 dayspower: domain: scmi: Allow failure in getting power domain attributeYe Li
When one power domain fails to get attribute, continue getting attribute for remaining power domains, not return probe failure. So other power domains are still functional. It is possible that one power domain is assigned to other agent or this power domain is disabled by HW fuse, so platform returns denied or other error. Signed-off-by: Ye Li <[email protected]> Reviewed-by: Peng Fan <[email protected]> Signed-off-by: Peng Fan <[email protected]>
2026-06-25Kconfig: power: restyleJohan Jonker
Restyle all Kconfigs for "power": Menu entries : no space left Menu attributes: 1 TAB Help text : 1 TAB + 2 spaces Replace '---help---' by 'help' Signed-off-by: Johan Jonker <[email protected]> [trini: Add missing indentation on a few more multi-paragraph help texts] Signed-off-by: Tom Rini <[email protected]>
2026-06-09power: domain: imx8m: convert ofnode API to dev_read APIPeng Fan
Replace ofnode_for_each_subnode(subnode, dev_ofnode(dev)) with dev_for_each_subnode(subnode, dev) and ofnode_read_u32_default( dev_ofnode(dev), ...) with dev_read_u32_default(dev, ...). No functional change. Signed-off-by: Peng Fan <[email protected]>
2026-06-09power: domain: meson-gx-pwrc-vpu: use dev_read_phandle_with_args for hhi-sysctrlPeng Fan
Replace the manual ofnode_read_u32() + ofnode_get_by_phandle() sequence with a single dev_read_phandle_with_args() call to resolve the amlogic,hhi-sysctrl phandle. This is cleaner and avoids the intermediate phandle value and ofnode_valid() check. No functional change. Reviewed-by: Neil Armstrong <[email protected]> Signed-off-by: Peng Fan <[email protected]>
2026-06-09power: domain: meson-ee-pwrc: use dev_read_phandle_with_args for ao-sysctrlPeng Fan
Replace the manual ofnode_read_u32() + ofnode_get_by_phandle() sequence with a single dev_read_phandle_with_args() call to resolve the amlogic,ao-sysctrl phandle. This is cleaner and avoids the intermediate phandle value and ofnode_valid() check. No functional change. Reviewed-by: Neil Armstrong <[email protected]> Signed-off-by: Peng Fan <[email protected]>
2026-05-25Merge tag 'v2026.07-rc3' into nextTom Rini
Prepare v2026.07-rc3
2026-05-21power: domain: Add Renesas R-Car R8A78000 X5H MDLC power domain and reset driverMarek Vasut
Add Renesas R-Car R8A78000 X5H MDLC power domain and reset driver, which serves as a remap driver between DT power domain and reset IDs and SCMI power domain and reset IDs in case U-Boot runs on Cortex-A, and as a direct hardware access driver for RSIP. The R-Car X5H SCP firmware uses different SCMI power domain and reset IDs in different versions of the SCP firmware, which makes this remapping necessary. The SCMI base protocol version is updated for each new SCP firmware version, it is therefore possible to determine which SCP firmware version is running on the platform from the base protocol and then determine which remapping table to use for DT power domain and reset ID to SCMI power domain and reset ID remapping. Currently supported versions are SCP 4.28, 4.31, 4.32 . The DT power domain and reset ID to SCMI power domain and reset ID remap and call mechanism is simple. Unlike SCMI clock protocol driver, the SCMI reset and power domain protocol drivers register only a single device. This driver looks up that single device, obtains its reset or power domain ops, sets up struct reset_ctl or struct power_domain with remapped SCMI ID, and invokes operations directly on the device. In case of RSIP, all power domains are already enabled by BootROM or early SoC initialization code, the driver therefore only acts as a stub for the power domain part. The reset part operates as a direct hardware access reset driver. Signed-off-by: Marek Vasut <[email protected]>
2026-05-15power: domain: zynqmp: Staticize and constify driver opsMarek Vasut
Set the ops structure as static const. The structure is not accessible from outside of this driver and is not going to be modified at runtime. Signed-off-by: Marek Vasut <[email protected]> Reviewed-by: Michal Simek <[email protected]> Reviewed-by: Peng Fan <[email protected]> Signed-off-by: Peng Fan <[email protected]>
2026-05-15power: domain: tegra186: Staticize and constify driver opsMarek Vasut
Set the ops structure as static const. The structure is not accessible from outside of this driver and is not going to be modified at runtime. Signed-off-by: Marek Vasut <[email protected]> Reviewed-by: Peng Fan <[email protected]> Signed-off-by: Peng Fan <[email protected]>
2026-05-15power: domain: scmi: Staticize and constify driver opsMarek Vasut
Set the ops structure as static const. The structure is not accessible from outside of this driver and is not going to be modified at runtime. Signed-off-by: Marek Vasut <[email protected]> Reviewed-by: Peng Fan <[email protected]> Signed-off-by: Peng Fan <[email protected]>
2026-05-15power: domain: sandbox: Staticize and constify driver opsMarek Vasut
Set the ops structure as static const. The structure is not accessible from outside of this driver and is not going to be modified at runtime. Signed-off-by: Marek Vasut <[email protected]> Reviewed-by: Simon Glass <[email protected]> Reviewed-by: Peng Fan <[email protected]> Signed-off-by: Peng Fan <[email protected]>
2026-05-15power: domain: mtk: Staticize and constify driver opsMarek Vasut
Set the ops structure as static const. The structure is not accessible from outside of this driver and is not going to be modified at runtime. Signed-off-by: Marek Vasut <[email protected]> Reviewed-by: David Lechner <[email protected]> Reviewed-by: Peng Fan <[email protected]> Signed-off-by: Peng Fan <[email protected]>
2026-05-15power: domain: meson-secure-pwrc: Staticize and constify driver opsMarek Vasut
Set the ops structure as static const. The structure is not accessible from outside of this driver and is not going to be modified at runtime. Signed-off-by: Marek Vasut <[email protected]> Reviewed-by: Peng Fan <[email protected]> Signed-off-by: Peng Fan <[email protected]>
2026-05-15power: domain: meson-gx-pwrc: Staticize and constify driver opsMarek Vasut
Set the ops structure as static const. The structure is not accessible from outside of this driver and is not going to be modified at runtime. Signed-off-by: Marek Vasut <[email protected]> Reviewed-by: Peng Fan <[email protected]> Signed-off-by: Peng Fan <[email protected]>
2026-05-15power: domain: meson-ee-pwrc: Staticize and constify driver opsMarek Vasut
Set the ops structure as static const. The structure is not accessible from outside of this driver and is not going to be modified at runtime. Signed-off-by: Marek Vasut <[email protected]> Reviewed-by: Peng Fan <[email protected]> Signed-off-by: Peng Fan <[email protected]>
2026-05-15power: domain: imx8mp-mediamix: Staticize and constify driver opsMarek Vasut
Set the ops structure as static const. The structure is not accessible from outside of this driver and is not going to be modified at runtime. Signed-off-by: Marek Vasut <[email protected]> Reviewed-by: Peng Fan <[email protected]> Signed-off-by: Peng Fan <[email protected]>
2026-05-15power: domain: imx8m: Staticize and constify driver opsMarek Vasut
Set the ops structure as static const. The structure is not accessible from outside of this driver and is not going to be modified at runtime. Signed-off-by: Marek Vasut <[email protected]> Reviewed-by: Peng Fan <[email protected]> Signed-off-by: Peng Fan <[email protected]>
2026-05-15power: domain: imx8: Staticize and constify driver opsMarek Vasut
Set the ops structure as static const. The structure is not accessible from outside of this driver and is not going to be modified at runtime. Signed-off-by: Marek Vasut <[email protected]> Reviewed-by: Peng Fan <[email protected]> Signed-off-by: Peng Fan <[email protected]>
2026-05-15power: domain: imx8-legacy: Staticize and constify driver opsMarek Vasut
Set the ops structure as static const. The structure is not accessible from outside of this driver and is not going to be modified at runtime. Signed-off-by: Marek Vasut <[email protected]> Reviewed-by: Peng Fan <[email protected]> Signed-off-by: Peng Fan <[email protected]>
2026-05-15power: domain: bcm6328: Staticize and constify driver opsMarek Vasut
Set the ops structure as static const. The structure is not accessible from outside of this driver and is not going to be modified at runtime. Signed-off-by: Marek Vasut <[email protected]> Reviewed-by: Peng Fan <[email protected]> Signed-off-by: Peng Fan <[email protected]>
2026-05-15power: domain: apple: Staticize and constify driver opsMarek Vasut
Set the ops structure as static const. The structure is not accessible from outside of this driver and is not going to be modified at runtime. Signed-off-by: Marek Vasut <[email protected]> Reviewed-by: Peng Fan <[email protected]> Signed-off-by: Peng Fan <[email protected]>
2026-05-12power: domain: apple: Add "apple,t8103-pmgr-pwrstate" compatibleJanne Grunau
After discussion with the devicetree maintainers we agreed to not extend lists with the generic compatible "apple,pmgr-pwrstate" anymore [1]. Use "apple,t8103-pmgr-pwrstate" as base compatible as it is the SoC driver and bindings were originally written for. The t602x (M2 Pro/Max/Ultra) devicetrees submitted in [2] use this compatible as fallback instead of "apple,pmgr-pwrstate". Link: https://lore.kernel.org/asahi/[email protected]/ [1] Link: https://lore.kernel.org/asahi/[email protected]/ [2] Signed-off-by: Janne Grunau <[email protected]> Acked-by: Mark Kettenis <[email protected]>
2026-04-27power-domain: Add warning when power-domain driver is missingAswin Murugan
Update dev_power_domain_ctrl() to log a warning if the power-domain driver is not found (-ENODEV). Return 0 in this case to allow continued execution, while preserving error handling for other failures. Reviewed-by: Varadarajan Narayanan <[email protected]> Signed-off-by: Aswin Murugan <[email protected]> Reviewed-by: Sumit Garg <[email protected]> Link: https://patch.msgid.link/[email protected] Signed-off-by: Casey Connolly <[email protected]>
2026-04-27power-domain: Add QCOM RPMH Power Domain Driver SupportBalaji Selvanathan
Added support for Qualcomm RPMH power domain driver, responsible for managing power domains on Qualcomm SoCs. This is a port of the Linux RPMHPD driver [1] and sa8775p related changes. The power domain driver currently has support to power on and off MMCX power domain of sa8775p; support for other soc entries power domains are stubbed, in future, the required soc support can be added. [1]: https://web.git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/pmdomain/qcom/rpmhpd.c?id=3d25d46a255a83f94d7d4d4216f38aafc8e116b Reviewed-by: Neil Armstrong <[email protected]> Signed-off-by: Balaji Selvanathan <[email protected]> Signed-off-by: Aswin Murugan <[email protected]> Reviewed-by: Sumit Garg <[email protected]> Link: https://patch.msgid.link/[email protected] Signed-off-by: Casey Connolly <[email protected]>
2026-03-09Merge tag 'v2026.04-rc4' into nextTom Rini
Prepare v2026.04-rc4
2026-02-26power: domain: Validate device tree node in dev_power_domain_ctrlPeng Fan
Similar to pinctrl_select_state(), add dev_has_ofnode() check before doing the real work. Device(scmi_base.0) does not have a real device node, ofnode_null() is assigned as the device tree node for scmi base protocol device: 'commit 7eb4eb541c14 ("firmware: scmi: install base protocol to SCMI agent")' However with recent update in 'commit 0535e46d55d7 ("scripts/dtc: Update to upstream version v1.7.2-35-g52f07dcca47c")', SPL panic in fdt_check_node_offset_()->fdt_next_tag(), because offset is -1 and SPL_OF_LIBFDT_ASSUME_MASK is 0xFF. So need to validate device tree node. Reported-by: Ye Li <[email protected]> Closes: https://lore.kernel.org/u-boot/[email protected]/ Signed-off-by: Peng Fan <[email protected]>
2026-02-17Merge patch series "treewide: Clean up usage of DECLARE_GLOBAL_DATA_PTR"Tom Rini
Peng Fan (OSS) <[email protected]> says: This patch set primarily removes unused DECLARE_GLOBAL_DATA_PTR instances. Many files declare DECLARE_GLOBAL_DATA_PTR and include asm/global_data.h even though gd is never used. In these cases, asm/global_data.h is effectively treated as a proxy header, which is not a good practice. Following the Include What You Use principle, files should include only the headers they actually depend on, rather than relying on global_data.h indirectly. This approach is also adopted in Linux kernel [1]. The first few patches are prepartion to avoid building break after remove the including of global_data.h. A script is for filtering the files: list=`find . -name "*.[ch]"` for source in ${list} do result=`sed -n '/DECLARE_GLOBAL_DATA_PTR/p' ${source}` if [ "${result}" == "DECLARE_GLOBAL_DATA_PTR;" ]; then echo "Found in ${source}" result=`sed -n '/\<gd\>/p' ${source}` result2=`sed -n '/\<gd_/p' ${source}` result3=`sed -n '/\<gd->/p' ${source}` if [ "${result}" == "" ] && [ "${result2}" == "" ] && [ "${result3}" == "" ];then echo "Cleanup ${source}" sed -i '/DECLARE_GLOBAL_DATA_PTR/{N;/\n[[:space:]]*$/d;s/.*\n//;}' ${source} sed -i '/DECLARE_GLOBAL_DATA_PTR/d' ${source} sed -i '/global_data.h/d' ${source} git add ${source} fi fi done [1] https://lpc.events/event/17/contributions/1620/attachments/1228/2520/Linux%20Kernel%20Header%20Optimization.pdf CI: https://github.com/u-boot/u-boot/pull/865 Link: https://lore.kernel.org/r/[email protected]
2026-02-17treewide: Clean up DECLARE_GLOBAL_DATA_PTR usagePeng Fan
Remove DECLARE_GLOBAL_DATA_PTR from files where gd is not used, and drop the unnecessary inclusion of asm/global_data.h. Headers should be included directly by the files that need them, rather than indirectly via global_data.h. Reviewed-by: Patrice Chotard <[email protected]> #STMicroelectronics boards and STM32MP1 ram test driver Tested-by: Anshul Dalal <[email protected]> #TI boards Acked-by: Yao Zi <[email protected]> #TH1520 Signed-off-by: Peng Fan <[email protected]>
2026-02-14Replace TARGET namespace and cleanup properlyTien Fong Chee
TARGET namespace is for machines / boards / what-have-you that building U-Boot for. Simply replace from TARGET to ARCH make things more clear and proper for ALL SoCFPGA. Signed-off-by: Brian Sune <[email protected]> Reviewed-by: Tien Fong Chee <[email protected]> # Conflicts: # drivers/ddr/altera/Makefile
2025-12-12power: domain: Add ti-omap-prm stubMarkus Schneider-Pargmann (TI.com)
Upstream DT uses simple-pm-bus instead of simple-bus. simple-pm-bus requires power domain support. On am33xx, PRM manages power domains but all domains are enabled at boot. Add stub driver with custom of_xlate that expects no argumetns to allow simple-pm-bus and dependent devices to probe. Signed-off-by: Markus Schneider-Pargmann (TI.com) <[email protected]>
2025-11-27power: domain: ti: fix ti_pd_get() to return after verifying transitionSiddharth Vadapalli
The helper function "ti_pd_get()" is responsible for powering on a domain if it is powered off. In the current implementation, if a power domain is determined to be powered off - no prior users and the PDCTL register indicates that the user desired state is OFF, then powering on the domain constitutes setting 'PDCTL_STATE_ON' field of the PDCTL register. While the current implementation indeed requests the power domain to be transition to the ON state, the helper function "ti_pd_get()" doesn't verify that the power domain has 'transitioned' to the ON state before returning to its caller. As a result, it is possible that the device(s) belonging to the power domain may be accessed before it is truly powered on, leading to a bus abort. Fix this by waiting for the power domain to transition to the ON state by using "ti_pd_wait()" before returning from "ti_pd_get()". Fixes: 144464bd2c67 ("power: domain: Introduce driver for raw TI K3 PDs") Signed-off-by: Siddharth Vadapalli <[email protected]> Tested-by: Hrushikesh Salunke <[email protected]>
2025-10-22arm: socfpga: Tighten a few more driver dependenciesTom Rini
Some drivers which depend on SoCFPGA specific headers had not had appropriate dependencies list in Kconfig. Add ARCH_SOCFPGA or TARGET_SOCFPGA_SOC64 where appropriate. Signed-off-by: Tom Rini <[email protected]>
2025-10-09drivers: firmware: update xilinx_pm_request to support max payloadNaman Trivedi
Currently xilinx_pm_request API supports four u32 payloads. However the legacy SMC format supports five u32 request payloads and extended SMC format supports six u32 request payloads. Add support for the same in xilinx_pm_request API. Also add two dummy arguments to all the callers of xilinx_pm_request. The TF-A always fills seven u32 return payload so add support for the same in xilinx_pm_request API. Signed-off-by: Naman Trivedi <[email protected]> Signed-off-by: Venkatesh Yadav Abbarapu <[email protected]> Acked-by: Senthil Nathan Thangaraj <[email protected]> Signed-off-by: Michal Simek <[email protected]> Link: https://lore.kernel.org/r/5ae6b560741f3ca8b89059c4ebb87acf75b4718e.1756388537.git.michal.simek@amd.com
2025-07-30arch: arm: agilex5: Enable power manager for Agilex5Alif Zakuan Yuslaimi
Agilex5 FSBL is required to disable the power of unused peripheral SRAM blocks to reduce power consumption. Introducing a new power manager driver for Agilex5 which will be called as part of Agilex5 SPL initialization process. This driver will read the peripheral handoff data obtained from the bitstream and will power off the specified peripheral's SRAM from the handoff data values. Signed-off-by: Alif Zakuan Yuslaimi <[email protected]> Reviewed-by: Tien Fong Chee <[email protected]>
2025-07-24imx: power-domain: Fix crash due to uninitialized 'id' fieldFrieder Schrempf
In case of the i.MX8M power-domains (i.MX8MQ, MM, MN) there is only one power-domain for each device. Therefore the 'id' field in struct power_domain should always be zero. Currently if a power-domain is accessed after the initial bind, the 'id' field is left uninitialized. This didn't cause any problems until the following commits were introduced: 9086b64ca071 ("power-domain: Add support for refcounting (again)") a785ef24487b ("imx: power-domain: Enable refcounting on imx8mp") Now the 'id' field gets accessed in the power_domain_off() sequence and the invalid value causes "Synchronous Abort" failures. This was observed on a i.MX8MM board when running "usb start" and then "usb stop". Fix this issue by setting power_domain->id to '0' in imx8m_power_domain_of_xlate(). Signed-off-by: Frieder Schrempf <[email protected]> Fixes: d08a194871fd ("imx: add support for i.MX8MQ power domain controller") Fixes: 9086b64ca071 ("power-domain: Add support for refcounting (again)") Reviewed-by: Miquel Raynal <[email protected]>
2025-05-03firmware: scmi: use scmi_proto_driver_get() function to get SCMI protocol driverAlice Guo
If there is a SoC specific SCMI protocol driver, using scmi_proto_driver_get() function can avoid to add SoC specific code to scmi_agent-uclass.c. Signed-off-by: Alice Guo <[email protected]>
2025-04-28imx: power-domain: Enable refcounting on imx8mpMiquel Raynal
Prevent enabling/disabling multiple times the same power domain to avoid breakages due to the same power domains being referenced several times by different device nodes. Signed-off-by: Miquel Raynal <[email protected]>
2025-04-28power-domain: Add support for refcounting (again)Miquel Raynal
It is very surprising that such an uclass, specifically designed to handle resources that may be shared by different devices, is not keeping the count of the number of times a power domain has been enabled/disabled to avoid shutting it down unexpectedly or disabling it several times. Doing this causes troubles on eg. i.MX8MP because disabling power domains can be done in recursive loops were the same power domain disabled up to 4 times in a row. PGCs seem to have tight FSM internal timings to respect and it is easy to produce a race condition that puts the power domains in an unstable state, leading to ADB400 errors and later crashes in Linux. Some drivers implement their own mechanism for that, but it is probably best to add this feature in the uclass and share the common code across drivers. In order to avoid breaking existing drivers, refcounting is only enabled if the number of subdomains a device node supports is explicitly set in the probe function. ->xlate() callbacks will return the power domain ID which is then being used as the array index to reach the correct refcounter. As we do not want to break existing users while stile getting interesting error codes, the implementation is split between: - a low-level helper reporting error codes if the requested transition could not be operated, - a higher-level helper ignoring the "non error" codes, like EALREADY and EBUSY. CI tests using power domains are slightly updated to make sure the count of on/off calls is even and the results match what we *now* expect. They are also extended to test the low-level functions. Signed-off-by: Miquel Raynal <[email protected]>
2025-04-18Revert "power-domain: Add refcounting"Wadim Egorov
Unfortunately this change breaks boot on K3 platform. U-Boot will hang after: U-Boot SPL 2025.04-01050-ga40fc5afaec0 (Apr 14 2025 - 07:31:32 +0000) SYSFW ABI: 3.1 (firmware rev 0x0009 '9.2.7--v09.02.07 (Kool Koala)') This reverts commit 197376fbf300e92afa0a1583815d9c9eb52d613a as suggested in [1]. [1] https://lists.denx.de/pipermail/u-boot/2025-April/587032.html Signed-off-by: Wadim Egorov <[email protected]> Acked-by: Miquel Raynal <[email protected]>
2025-04-11Merge patch series "Switch to using $(PHASE_) in Makefiles"Tom Rini
Tom Rini <[email protected]> says: This series switches to always using $(PHASE_) in Makefiles when building rather than $(PHASE_) or $(XPL_). It also starts on documenting this part of the build, but as a follow-up we need to rename doc/develop/spl.rst and expand on explaining things a bit. Link: https://lore.kernel.org/r/[email protected]
2025-04-11Kbuild: Always use $(PHASE_)Tom Rini
It is confusing to have both "$(PHASE_)" and "$(XPL_)" be used in our Makefiles as part of the macros to determine when to do something in our Makefiles based on what phase of the build we are in. For consistency, bring this down to a single macro and use "$(PHASE_)" only. Signed-off-by: Tom Rini <[email protected]>
2025-04-10imx: power-domain: Add support for the MEDIAMIX control blockMiquel Raynal
This block delivers power and clocks to the whole display and rendering pipeline. Signed-off-by: Miquel Raynal <[email protected]>
2025-04-10imx: power-domain: Describe the i.MX8 MEDIAMIX domainMiquel Raynal
Add support for the i.MX8 MEDIAMIX domain which is driving the power over the whole display/rendering pipeline. Signed-off-by: Miquel Raynal <[email protected]> Reviewed-by: Fabio Estevam <[email protected]>
2025-04-10power-domain: Add refcountingMiquel Raynal
It is very surprising that such an uclass, specifically designed to handle resources that may be shared by different devices, is not keeping the count of the number of times a power domain has been enabled/disabled to avoid shutting it down unexpectedly or disabling it several times. Doing this causes troubles on eg. i.MX8MP because disabling power domains can be done in recursive loops were the same power domain disabled up to 4 times in a row. PGCs seem to have tight FSM internal timings to respect and it is easy to produce a race condition that puts the power domains in an unstable state, leading to ADB400 errors and later crashes in Linux. CI tests using power domains are slightly updated to make sure the count of on/off calls is even and the results match what we *now* expect. As we do not want to break existing users while stile getting interesting error codes, the implementation is split between: - a low-level helper reporting error codes if the requested transition could not be operated, - a higher-level helper ignoring the "non error" codes, like EALREADY and EBUSY. Signed-off-by: Miquel Raynal <[email protected]>
2025-04-05arm: mach-k3: j721e: Split out J7200 SoC support from J721eAndrew Davis
Currently in j721e_init.c we check which firewalls to remove using the board configuration (e.g CONFIG_TARGET_J721E_R5_EVM). We do this as J721e and J7200 have different IP and firewalls but use the same SoC definition (SOC_K3_J721E) even though they are different SoCs. The idea was they would be similar enough that they both could use the same SoC config to help with common code sharing. Board checks would then be used differentiate. This has grown far too messy to maintain any more, especially now that there is more than one board using J721e (EVM, SK, Beagle AI64). As differentiation is done based on board, every one of these boards would have to have checks added for them. Instead let's split J7200 support out from J721e like how normal new SoC support is done. This patch touches several subsystems and could not be split much better as when we add SOC_K3_J7200 we want to make use of it in all spots that once used the combined SOC_K3_J721E so we can turn off SOC_K3_J721E when building for J7200 boards. Signed-off-by: Andrew Davis <[email protected]>
2025-04-03arm: mach-k3: j742s2: Introduce clock and device files for J742S2 SoCManorit Chawdhry
Re-use j784s4 clocks and power domains for j742s2 family of device. Reviewed-by: Udit Kumar <[email protected]> Signed-off-by: Manorit Chawdhry <[email protected]>
2024-10-25imx: power-domain: Convert to use livetree API for fdt accessTim Harvey
Convert to using livetree API functions. Without this if livetree is enabled (OF_LIVE) the imx8m-power-domain driver will (silently) fail to probe its children leaving you with no power domain support causing issues with certain devices. Signed-off-by: Tim Harvey <[email protected]> Reviewed-by: Jaehoon Chung <[email protected]>