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522ba450b5
struct clk_ops::determine_rate() instead of the round_rate() one so that we can remove the round_rate clk_op entirely. Brian has taken up that task which nobody else has wanted to do for close to a decade. Thanks Brian! This is all prerequisite work to get to the real task of improving the clk rate setting process. Once we have determine_rate() used everywhere, we'll be able to do things like chain the rate request structs in linked lists to order the rate setting operations or add more parameters without having to change every clk driver in existence. It's also nice to not have multiple ways to do something which just causes confusion for clk driver authors. Overall I'm glad this is getting done. Beyond this change we also have a tweak to the clk_lookup() function in the core framework to use hashing on the clk name instead of a clk tree walk with string comparisons. We _still_ rely on the clk name to be unique, because historically we've used globally unique strings to describe the clk tree topology. This tree walk becomes increasingly slow as more clks are added to the system. Searching from the roots for a duplicate is simple but pretty dumb and it wastes boot time so we're using a hash table as an improvement. Ideally we wouldn't rely on the strings to be unique at all, relegating them to simply debug information, but that is future work that will likely require some sort of Kconfig knob indicating strings aren't used for topology description. Outside of the core framework changes we have the usual new SoC support and fixes to clk drivers for things that were discovered once the clks were used by consumer drivers. Nothing in particular is jumping out at me in the "misc" pile, except maybe the Amlogic driver that has gone through a refactoring. That series got a fix from testing in -next though so it seems likely that things have been getting good test coverage for a couple weeks already. -----BEGIN PGP SIGNATURE----- iQJIBAABCAAyFiEE9L57QeeUxqYDyoaDrQKIl8bklSUFAmjkoQAUHHN3Ym95ZEBj aHJvbWl1bS5vcmcACgkQrQKIl8bklSWfWBAA3cjpOX/qOBDPmYPvV+WgiTPcmnw+ PaMiGNqIWctnJiuYYUNVCfBIvTk9i1vYSgEosHAOqjXQV+7Ee31420xn5RYr6Zen cfeD58SJwZ1JVidvxwWclC5pnfTVXBC3wlHILCFHhckaGOT2k3d0ryN2io2TYuRx t9JsoW73YW+bmOWoFDHPMp4ow5Q87aa8k3/srhIP67tw2mzJp8Wp+EG0t0PVFF7Z aboz+QPwyT2YOLFKJxm6nTLb9FRVq3QLSO3Ek0+0TYXfRqkfegvGR+M82P4Jq2Y3 osmTsumWeI170iAETmx2Py+uUV8MmnvPFQ6mxrGoXYyOx9SclN+SC86cOsi+RsgD 830CHupZ/TrN3+DGyX6WVx1j7XKCplKhFXrXiFbkPnj4nJwi5UgiJrjAjPy78+iX LyvKfeT9ooAAVBVRMyZIWGF3kuQf5qHFMps5fwJk/j3R9yMiI10SVhruhYij1qAi EEisj955xqdyZV2gq85E7zHbjySA0nvNABn3NVUQOKPYQqtpglqXKGJuXZ1//9pa fZM2a3fH7w4fwH1x06FKut9zf1AZUgyasJPtgyCT9dpN+pcoNmJfoH3T42MCItbm XKEYgnv/kQT+M+GokBUfg8bJY5uPnPLa/f6aAAIAKGZV0HXAqz2q73SDlW7KUQmr vhgA4MRH4Vqviic= =fjY4 -----END PGP SIGNATURE----- Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux Pull clk updates from Stephen Boyd: "There's a bunch of patches here across drivers/clk/ to migrate drivers to use struct clk_ops::determine_rate() instead of the round_rate() one so that we can remove the round_rate clk_op entirely. Brian has taken up that task which nobody else has wanted to do for close to a decade. Thanks Brian! This is all prerequisite work to get to the real task of improving the clk rate setting process. Once we have determine_rate() used everywhere, we'll be able to do things like chain the rate request structs in linked lists to order the rate setting operations or add more parameters without having to change every clk driver in existence. It's also nice to not have multiple ways to do something which just causes confusion for clk driver authors. Overall I'm glad this is getting done. Beyond this change we also have a tweak to the clk_lookup() function in the core framework to use hashing on the clk name instead of a clk tree walk with string comparisons. We _still_ rely on the clk name to be unique, because historically we've used globally unique strings to describe the clk tree topology. This tree walk becomes increasingly slow as more clks are added to the system. Searching from the roots for a duplicate is simple but pretty dumb and it wastes boot time so we're using a hash table as an improvement. Ideally we wouldn't rely on the strings to be unique at all, relegating them to simply debug information, but that is future work that will likely require some sort of Kconfig knob indicating strings aren't used for topology description. Outside of the core framework changes we have the usual new SoC support and fixes to clk drivers for things that were discovered once the clks were used by consumer drivers. Nothing in particular is jumping out at me in the "misc" pile, except maybe the Amlogic driver that has gone through a refactoring. That series got a fix from testing in -next though so it seems likely that things have been getting good test coverage for a couple weeks already" * tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (299 commits) clk: microchip: core: remove duplicate roclk_determine_rate() reset: aspeed: register AST2700 reset auxiliary bus device dt-bindings: clock: ast2700: modify soc0/1 clock define clk: tegra: do not overallocate memory for bpmp clocks clk: ep93xx: Use int type to store negative error codes clk: nxp: Fix pll0 rate check condition in LPC18xx CGU driver clk: loongson2: Add clock definitions for Loongson-2K0300 SoC clk: loongson2: Avoid hardcoding firmware name of the reference clock clk: loongson2: Allow zero divisors for dividers clk: loongson2: Support scale clocks with an alternative mode clk: loongson2: Allow specifying clock flags for gate clock dt-bindings: clock: loongson2: Add Loongson-2K0300 compatible clk: clocking-wizard: Fix output clock register offset for Versal platforms clk: xilinx: Optimize divisor search in clk_wzrd_get_divisors_ver() clk: mmp: pxa1908: Instantiate power driver through auxiliary bus clk: s2mps11: add support for S2MPG10 PMIC clock dt-bindings: clock: samsung,s2mps11: add s2mpg10 dt-bindings: stm32: cosmetic fixes for STM32MP25 clock and reset bindings clk: stm32: introduce clocks for STM32MP21 platform dt-bindings: stm32: add STM32MP21 clocks and reset bindings ... |
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