u-boot.git/drivers/firmware/scmi, branch v2025.07

scmi_protocols: update struct scmi_base_discover_list_protocols_out

2025-05-03T19:55:32Z

@protocols is an array of protocol identifiers that are implemented, excluding the Base protocol. Four protocol identifiers are packed into each array element. The number of elements of @protocols is specified by callee-side. Signed-off-by: Ye Li Signed-off-by: Alice Guo

sandbox: add SCMI clock control permissions to sandbox

2025-05-03T19:55:32Z

This patch is used to add SCMI clock control permissions to sandbox for testing. Signed-off-by: Alice Guo

firmware: scmi_agent: add SCMI pin control protocol support

2025-05-03T19:55:32Z

This patch adds SCMI pin control protocol support to make the pin controller driver based on SCMI, such as drivers/pinctrl/nxp/pinctrl-imx-scmi.c, can be bound to the SCMI agent device whose protocol id is 0x19. Signed-off-by: Alice Guo

firmware: scmi: use scmi_proto_driver_get() function to get SCMI protocol driver

2025-05-03T19:55:32Z

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

firmware: scmi: support to manage SCMI protocol drivers with a linker-genetated array

2025-05-03T19:55:32Z

U_BOOT_SCMI_PROTO_DRIVER macro is used to add a SCMI protocol driver to scmi_proto_driver list. scmi_proto_driver_get() function can be used to match a SCMI protocol id and its driver. Signed-off-by: Alice Guo

power-domain: Add support for refcounting (again)

2025-04-28T13:41:19Z

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

power: regulator: scmi: Move regulator subnode hack to scmi_regulator

2025-04-23T03:28:12Z

The current code attempts to bind scmi_voltage_domain to regulator subnode of the SCMI protocol node, so scmi_voltage_domain can then bind regulators directly to subnodes of its node. This kind of behavior should not be in core code, move it into scmi_voltage_domain driver code. Let the driver descend into regulator node and bind regulators to its subnodes. Fixes: 1f213ee4dbf2 ("firmware: scmi: voltage regulator") Signed-off-by: Marek Vasut [Alice Guo: Fix scmi_regulator_bind] Signed-off-by: Peng Fan

Revert "power-domain: Add refcounting"

2025-04-18T15:35:39Z

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 Acked-by: Miquel Raynal

firmware: scmi: smt: Interrupt communication enable

2025-04-11T11:26:27Z

i.MX95 System Manager uses interrupt driven communication which requires the caller to set Bit[0] of channel flags to 1. When transmission completes and the previous general purpose interrupt has been processed by the other core, i.MX95 System Manager will set General Purpose Interrupt Control Register (GCR). U-Boot polls General-purpose Status (GSR) to check if the operation is finished. Signed-off-by: Viorel Suman Signed-off-by: Alice Guo Reviewed-by: Ye Li Reviewed-by: Marek Vasut

power-domain: Add refcounting

2025-04-11T01:32:55Z