kernel/linux.git/drivers/memory, branch v6.6.2

memory: tegra: Set BPMP msg flags to reset IPC channels

2023-11-20T10:59:17+00:00

[ Upstream commit f344675a34383ae26a8230f4b1cd99cbd0defebd ] Set the 'TEGRA_BPMP_MESSAGE_RESET' bit in newly added 'flags' field of 'struct tegra_bpmp_message' to request for the reset of BPMP IPC channels. This is used along with the 'suspended' check in BPMP driver for handling early bandwidth requests due to the hotplug of CPU's during system resume before the driver gets resumed. Fixes: f41e1442ac5b ("cpufreq: tegra194: add OPP support and set bandwidth") Co-developed-by: Sumit Gupta Signed-off-by: Sumit Gupta Acked-by: Krzysztof Kozlowski Signed-off-by: Thierry Reding Signed-off-by: Sasha Levin

memory: tegra: add MC client for Tegra234 GPU

2023-08-05T07:01:31+00:00

Add the Non-ISO MC client for the Tegra234 GPU to the tegra234_mc_clients table. Signed-off-by: Sumit Gupta Link: https://lore.kernel.org/r/20230801121023.27841-1-sumitg@nvidia.com Signed-off-by: Krzysztof Kozlowski

memory: Explicitly include correct DT includes

2023-07-25T20:09:37+00:00

The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it as merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Signed-off-by: Rob Herring Link: https://lore.kernel.org/r/20230714174717.4059518-1-robh@kernel.org Signed-off-by: Krzysztof Kozlowski

memory: tegra: Prefer octal over symbolic permissions

2023-07-25T20:09:36+00:00

checkpatch recommends using octal permissions instead of symbolic permissions. Switch the debugfs files to use the former to silence these warnings. Signed-off-by: Thierry Reding Link: https://lore.kernel.org/r/20230714150116.2823766-1-thierry.reding@gmail.com Signed-off-by: Krzysztof Kozlowski

memory: tegra: add check if MRQ_EMC_DVFS_LATENCY is supported

2023-07-25T20:09:36+00:00

Add check to ensure that "MRQ_EMC_DVFS_LATENCY" is supported by the BPMP-FW before making the MRQ request. Currently, if the BPMP-FW doesn't support this MRQ, then the "tegra186_emc_probe" fails. Due to this the Memory Interconnect initialization also doesn't happen. Memory Interconnect is not dependent on this MRQ and can initialize even when this MRQ is not supported in any platform. The check ensures that the MRQ is called only when it is supported by the BPMP-FW and Interconnect initializes independent of this MRQ. Also, moved the code to new function for better readability. Signed-off-by: Sumit Gupta Acked-by: Thierry Reding Link: https://lore.kernel.org/r/20230621134400.23070-4-sumitg@nvidia.com Signed-off-by: Krzysztof Kozlowski

memory: tegra: Add clients used by DRM in Tegra234

2023-07-25T20:09:36+00:00

Add entries for VIC, NVDEC, NVENC, NVJPG memory controller clients into the 'tegra_234_mc_clients' table. Signed-off-by: Johnny Liu Signed-off-by: Sumit Gupta Acked-by: Thierry Reding Link: https://lore.kernel.org/r/20230621134400.23070-3-sumitg@nvidia.com Signed-off-by: Krzysztof Kozlowski

memory: tegra: sort tegra234_mc_clients table as per register offsets

2023-07-25T20:09:35+00:00

Sort the MC client entries in "tegra234_mc_clients" table as per the override and security register offsets. This will help to avoid creating duplicate entries. Signed-off-by: Sumit Gupta Acked-by: Thierry Reding Link: https://lore.kernel.org/r/20230621134400.23070-2-sumitg@nvidia.com Signed-off-by: Krzysztof Kozlowski

memory: tegra: make icc_set_bw return zero if BWMGR not supported

2023-07-25T20:09:20+00:00

Return zero from icc_set_bw() to MC client driver if MRQ_BWMGR_INT is not supported by the BPMP-FW. Currently, 'EINVAL' is returned which causes error message in client drivers even when the platform doesn't support scaling. Fixes: 9365bf006f53 ("PCI: tegra194: Add interconnect support in Tegra234") Signed-off-by: Sumit Gupta Acked-by: Thierry Reding Link: https://lore.kernel.org/r/20230621134400.23070-5-sumitg@nvidia.com Signed-off-by: Krzysztof Kozlowski

memory: tegra: Add dummy implementation on Tegra194

2023-07-10T10:04:56+00:00

With the introduction of commit 9365bf006f53 ("PCI: tegra194: Add interconnect support in Tegra234"), the PCI driver on Tegra194 and later requires an interconnect provider. However, a provider is currently only exposed on Tegra234 and this causes PCI on Tegra194 to defer probe indefinitely. Fix this by adding a dummy implementation on Tegra194. This allows nodes to be provided to interconnect consumers, but doesn't do any bandwidth accounting or frequency scaling. Fixes: 9365bf006f53 ("PCI: tegra194: Add interconnect support in Tegra234") Reported-by: Jon Hunter Signed-off-by: Thierry Reding Reviewed-by: Sumit Gupta Tested-by: Sumit Gupta Link: https://lore.kernel.org/r/20230629160132.768940-1-thierry.reding@gmail.com Signed-off-by: Krzysztof Kozlowski

Merge tag 'asm-generic-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

2023-07-06T17:06:04+00:00

Pull asm-generic updates from Arnd Bergmann: "These are cleanups for architecture specific header files: - the comments in include/linux/syscalls.h have gone out of sync and are really pointless, so these get removed - The asm/bitsperlong.h header no longer needs to be architecture specific on modern compilers, so use a generic version for newer architectures that use new enough userspace compilers - A cleanup for virt_to_pfn/virt_to_bus to have proper type checking, forcing the use of pointers" * tag 'asm-generic-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: syscalls: Remove file path comments from headers tools arch: Remove uapi bitsperlong.h of hexagon and microblaze asm-generic: Unify uapi bitsperlong.h for arm64, riscv and loongarch m68k/mm: Make pfn accessors static inlines arm64: memory: Make virt_to_pfn() a static inline ARM: mm: Make virt_to_pfn() a static inline asm-generic/page.h: Make pfn accessors static inlines xen/netback: Pass (void *) to virt_to_page() netfs: Pass a pointer to virt_to_page() cifs: Pass a pointer to virt_to_page() in cifsglob cifs: Pass a pointer to virt_to_page() riscv: mm: init: Pass a pointer to virt_to_page() ARC: init: Pass a pointer to virt_to_pfn() in init m68k: Pass a pointer to virt_to_pfn() virt_to_page() fs/proc/kcore.c: Pass a pointer to virt_addr_valid()