kernel/linux.git/drivers/spmi, branch v7.0-rc7

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

spmi: spmi-pmic-arb: add support for PMIC arbiter v8

2026-01-23T18:24:39+00:00

PMIC arbiter v8 supports up to 4 SPMI buses and up to 8192 PMIC peripherals. Its register map differs from v7 as several fields increased in size. Add support for PMIC arbiter version 8. Signed-off-by: David Collins Signed-off-by: Kamal Wadhwa Signed-off-by: Jishnu Prakash Reviewed-by: Konrad Dybcio Signed-off-by: Stephen Boyd Link: https://patch.msgid.link/20260123182039.224314-10-sboyd@kernel.org Signed-off-by: Greg Kroah-Hartman

spmi: apple: Add "apple,t8103-spmi" compatible

2026-01-23T18:24:39+00:00

After discussion with the devicetree maintainers we agreed to not extend lists with the generic compatible "apple,spmi" anymore [1]. Use "apple,t8103-spmi" as base compatible as it is the SoC the driver and bindings were written for. [1]: https://lore.kernel.org/asahi/12ab93b7-1fc2-4ce0-926e-c8141cfe81bf@kernel.org/ Fixes: 77ca75e80c71 ("spmi: add a spmi driver for Apple SoC") Cc: stable@vger.kernel.org Reviewed-by: Neal Gompa Signed-off-by: Janne Grunau Signed-off-by: Stephen Boyd Link: https://patch.msgid.link/20260123182039.224314-7-sboyd@kernel.org Signed-off-by: Greg Kroah-Hartman

spmi: mtk-pmif: Add support for MT8196 SPMI Controller

2026-01-23T18:24:39+00:00

Add support for the SPMI controller found in the MT8196 SoC: this supports SPMI 2.0 and features two SPMI buses. Reviewed-by: Nícolas F. R. A. Prado Signed-off-by: AngeloGioacchino Del Regno Signed-off-by: Stephen Boyd Link: https://patch.msgid.link/20260123182039.224314-6-sboyd@kernel.org Signed-off-by: Greg Kroah-Hartman

spmi: mtk-pmif: Implement Request Capable Slave (RCS) interrupt

2026-01-23T18:24:38+00:00

Add support for the per-bus RCS interrupt by adding a new linear irqdomain and its irqchip. The SPMI controller will raise an interrupt when any of the SPMI connected devices' irq needs attention (whenever any interrupt fires on any SID) in one of four registers, where each register holds four sets of four bits of information about a SID interrupt. This controller's RCS interrupt status knowledge is limited to the address of the SID that raised an interrupt, but does not have any details about the devices irq numbers: as this may change with a future SPMI controller IP version, the devicetree is meant to hold three cells, where the first one is the SPMI SID interrupt number, the second one is a device interrupt number, and the third one is the irq sense type. Reviewed-by: Nícolas F. R. A. Prado Signed-off-by: AngeloGioacchino Del Regno Signed-off-by: Stephen Boyd Link: https://patch.msgid.link/20260123182039.224314-5-sboyd@kernel.org Signed-off-by: Greg Kroah-Hartman

spmi: mtk-pmif: Keep spinlock until read is fully done

2026-01-23T18:24:38+00:00

Move the spin unlocking to after reading the contents of the PMIF_SWINF_(x)_RDATA_31_0 register in pmif_spmi_read_cmd(): since this is the only register that we can read to get the data from all of the arbitered busses, a concurrent request for reading (especially on a busy arbiter) will show a race condition and a unexpected or corrupted value may be read. Doing the entire read sequence while spin locked guarantees that concurrent access to the arbiter doesn't happen. Fixes: f200fff8d019 ("spmi: mtk-pmif: Serialize PMIF status check and command submission") Reviewed-by: Nícolas F. R. A. Prado Reviewed-by: Chen-Yu Tsai Signed-off-by: AngeloGioacchino Del Regno Signed-off-by: Stephen Boyd Fixes: b45b3ccef8c0 ("spmi: mediatek: Add support for MT6873/8192") Link: https://patch.msgid.link/20260123182039.224314-4-sboyd@kernel.org Signed-off-by: Greg Kroah-Hartman

spmi: mtk-pmif: Add multi-bus support for SPMI 2.0

2026-01-23T18:24:38+00:00

In preparation for adding support for MT8196/MT6991 SoCs having multiple SPMI busses, move the bus specific parameters into a new pmif_bus structure and keep the SoC-specific data in the already existing struct pmif, and add means to register multiple SPMI controllers. While this needs a different devicetree node structure, where each of the controllers are in subnodes of a main SPMI node, and where each has its own resources (iospaces and clocks), support for the legacy single-controller was retained and doesn't require any DT change in the currently supported SoCs. Reviewed-by: Nícolas F. R. A. Prado Signed-off-by: AngeloGioacchino Del Regno Signed-off-by: Stephen Boyd Link: https://patch.msgid.link/20260123182039.224314-3-sboyd@kernel.org Signed-off-by: Greg Kroah-Hartman

irqdomain: spmi: Switch to irq_domain_create_tree()

2025-05-21T12:53:17+00:00

irq_domain_add_tree() is going away as being obsolete now. Switch to the preferred irq_domain_create_tree(). That differs in the first parameter: It takes more generic struct fwnode_handle instead of struct device_node. Therefore, of_fwnode_handle() is added around the parameter. Note some of the users can likely use dev->fwnode directly instead of indirect of_fwnode_handle(dev->of_node). But dev->fwnode is not guaranteed to be set for all, so this has to be investigated on case to case basis (by people who can actually test with the HW). Signed-off-by: "Jiri Slaby (SUSE)" Cc: Stephen Boyd Link: https://lore.kernel.org/r/20250319092951.37667-37-jirislaby@kernel.org Signed-off-by: Stephen Boyd Link: https://lore.kernel.org/r/20250518032330.2959766-5-sboyd@kernel.org Signed-off-by: Greg Kroah-Hartman

spmi: add a spmi driver for Apple SoC

2025-05-21T12:53:17+00:00

The connected PMU contains several useful nvmem cells such as RTC offset, boot failure counters, reboot/shutdown selector, and a few others. In addition M3+ machines have their USB-PD controller connected via SPMI. Signed-off-by: Jean-Francois Bortolotti Reviewed-by: Sven Peter Reviewed-by: Alyssa Rosenzweig Co-developed-by: Sasha Finkelstein Signed-off-by: Sasha Finkelstein Link: https://lore.kernel.org/r/20250409-spmi-v4-2-eb81ecfd1f64@gmail.com Reviewed-by: Neal Gompa Signed-off-by: Stephen Boyd Link: https://lore.kernel.org/r/20250518032330.2959766-4-sboyd@kernel.org Signed-off-by: Greg Kroah-Hartman