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78b435c8db
linux/drivers/clk
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Maxime Ripard 78b435c8db clk: tegra: super: Add a determine_rate hook 
The Tegra super mux clock implements a mux with a set_parent hook, but
doesn't provide a determine_rate implementation.

This is a bit odd, since set_parent() is there to, as its name implies,
change the parent of a clock. However, the most likely candidates to
trigger that parent change are either the assigned-clock-parents device
tree property or a call to clk_set_rate(), with determine_rate()
figuring out which parent is the best suited for a given rate.

The other trigger would be a call to clk_set_parent(), but it's far less
used, and it doesn't look like there's any obvious user for that clock.

However, the upstream device trees seem to use assigned-clock-parents on
that clock to force the parent at boot time, so it's likely that the
author intent was to force the parent through the device tree and
prevent any reparenting but through an explicit call to
clk_set_parent().

This case would be equivalent to setting the determine_rate
implementation to clk_hw_determine_rate_no_reparent(). Indeed, if no
determine_rate implementation is provided, clk_round_rate() (through
clk_core_round_rate_nolock()) will call itself on the parent if
CLK_SET_RATE_PARENT is set, and will not change the clock rate
otherwise.

Cc: Jonathan Hunter <jonathanh@nvidia.com>
Cc: Peter De Schrijver <pdeschrijver@nvidia.com>
Cc: Prashant Gaikwad <pgaikwad@nvidia.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: linux-tegra@vger.kernel.org
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20221018-clk-range-checks-fixes-v4-35-971d5077e7d2@cerno.tech
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2023-06-08 18:39:30 -07:00
..
actions clk: actions: composite: Add a determine_rate hook for pass clk 2023-06-08 18:39:25 -07:00
analogbits
at91 clk: at91: sckc: Add a determine_rate hook 2023-06-08 18:39:26 -07:00
axis
axs10x clk: axs10x: Use managed of_clk_add_hw_provider() 2023-04-10 12:45:12 -07:00
baikal-t1
bcm Nothing looks out of the ordinary in this batch of clk driver updates. There 2023-04-29 17:29:39 -07:00
berlin clk: berlin: div: Add a determine_rate hook 2023-06-08 18:39:26 -07:00
davinci clk: davinci: da8xx-cfgchip: Add a determine_rate hook 2023-06-08 18:39:28 -07:00
hisilicon Nothing looks out of the ordinary in this batch of clk driver updates. There 2023-04-29 17:29:39 -07:00
imgtec
imx clk: imx: scu: Add a determine_rate hook 2023-06-08 18:39:29 -07:00
ingenic clk: ingenic: jz4760: Update M/N/OD calculation algorithm 2023-01-25 16:08:27 -08:00
keystone clk: keystone: Convert to platform remove callback returning void 2023-03-28 19:23:38 -07:00
mediatek clk: mediatek: cpumux: Add a determine_rate hook 2023-06-08 18:39:29 -07:00
meson clk: meson: clk-cpu-dyndiv: switch from .round_rate to .determine_rate 2023-01-13 15:14:12 +01:00
microchip Nothing looks out of the ordinary in this batch of clk driver updates. There 2023-04-29 17:29:39 -07:00
mmp clk: mmp: Convert to platform remove callback returning void 2023-03-28 19:31:44 -07:00
mstar clk: mstar: msc313 cpupll clk driver 2022-10-27 11:44:27 -07:00
mvebu clk: mvebu: Convert to platform remove callback returning void 2023-03-28 19:31:44 -07:00
mxs
nxp
pistachio
pxa clk: pxa: Add a determine_rate hook 2023-06-08 18:39:29 -07:00
qcom clk: qcom: gcc-sc8280xp: Add EMAC GDSCs 2023-04-24 07:22:01 -07:00
ralink clk: ralink: fix 'mt7621_gate_is_enabled()' function 2023-02-10 16:07:56 -08:00
renesas clk: renesas: r9a06g032: Add a determine_rate hook 2023-06-08 18:39:29 -07:00
rockchip Merge branches 'clk-of', 'clk-samsung', 'clk-rockchip' and 'clk-qcom' into clk-next 2023-04-25 11:52:25 -07:00
samsung clk: samsung: exynos850: Make PMU_ALIVE_PCLK critical 2023-03-13 08:24:57 +01:00
sifive clk: sifive: make SiFive clk drivers depend on ARCH_ symbols 2023-04-10 13:00:59 -07:00
socfpga clk: socfpga: gate: Add a determine_rate hook 2023-06-08 18:39:29 -07:00
spear clk: spear: Fix SSP clock definition on SPEAr600 2022-11-22 18:03:52 -08:00
sprd Nothing looks out of the ordinary in this batch of clk driver updates. There 2023-04-29 17:29:39 -07:00
st clk: st: Fix memory leak in st_of_quadfs_setup() 2022-12-07 18:27:11 -08:00
starfive clk: starfive: Fix RESET_STARFIVE_JH7110 can't be selected in a specified case 2023-05-02 18:34:49 -07:00
stm32 clk: stm32: core: Add a determine_rate hook 2023-06-08 18:39:30 -07:00
sunxi
sunxi-ng clk: sunxi-ng: d1: Add CAN bus gates and resets 2023-01-08 22:06:10 +01:00
tegra clk: tegra: super: Add a determine_rate hook 2023-06-08 18:39:30 -07:00
ti Merge branches 'clk-xilinx', 'clk-broadcom' and 'clk-platform' into clk-next 2023-04-25 11:50:36 -07:00
uniphier clk: uniphier: Use managed of_clk_add_hw_provider() 2023-04-10 12:56:25 -07:00
ux500
versatile
visconti clk: visconti: remove unused visconti_pll_provider::regmap 2023-03-06 11:43:29 -08:00
x86 clk: x86: Convert to platform remove callback returning void 2023-03-28 19:31:45 -07:00
xilinx Merge branches 'clk-xilinx', 'clk-broadcom' and 'clk-platform' into clk-next 2023-04-25 11:50:36 -07:00
zynq
zynqmp clk: zynqmp: pll: Remove the limit 2023-03-27 12:08:28 -07:00
.kunitconfig
clk_test.c clk: test: Add a determine_rate hook 2023-06-08 18:39:25 -07:00
clk-apple-nco.c
clk-asm9260.c
clk-aspeed.c
clk-aspeed.h
clk-ast2600.c clk: ast2600: Add comment about combined clock + reset handling 2023-03-06 14:11:29 -08:00
clk-axi-clkgen.c clk: axi-clkgen: Use managed of_clk_add_hw_provider() 2023-04-10 12:45:12 -07:00
clk-axm5516.c clk: axm5516: Use managed of_clk_add_hw_provider() 2023-04-10 12:45:12 -07:00
clk-bd718x7.c
clk-bm1880.c clk: bm1880: remove MODULE_LICENSE in non-modules 2023-04-13 13:13:50 -07:00
clk-bulk.c
clk-cdce706.c clk: cdce706: Add a determine_rate hook 2023-06-08 18:39:26 -07:00
clk-cdce925.c
clk-clps711x.c
clk-composite.c
clk-conf.c clk: add missing of_node_put() in "assigned-clocks" property parsing 2023-03-29 13:53:28 -07:00
clk-cs2000-cp.c
clk-devres.c
clk-divider.c
clk-en7523.c
clk-fixed-factor.c clk: fixed-factor: Convert to platform remove callback returning void 2023-03-28 19:23:36 -07:00
clk-fixed-mmio.c Nothing looks out of the ordinary in this batch of clk driver updates. There 2023-04-29 17:29:39 -07:00
clk-fixed-rate.c clk: fixed-rate: Convert to platform remove callback returning void 2023-03-28 19:23:36 -07:00
clk-fractional-divider.c clk: Compute masks for fractional_divider clk when needed. 2023-04-05 12:09:26 -07:00
clk-fractional-divider.h
clk-fsl-flexspi.c
clk-fsl-sai.c kbuild, clk: remove MODULE_LICENSE in non-modules 2023-03-06 11:29:18 -08:00
clk-gate_test.c
clk-gate.c
clk-gemini.c
clk-gpio.c
clk-hi655x.c
clk-highbank.c
clk-hsdk-pll.c clk: hsdk-pll: Use managed of_clk_add_hw_provider() 2023-04-10 12:45:12 -07:00
clk-k210.c clk: k210: mux: Add a determine_rate hook 2023-06-08 18:39:27 -07:00
clk-lan966x.c clk: lan966x: Remove unused round_rate hook 2023-06-08 18:39:25 -07:00
clk-lmk04832.c clk: lmk04832: clkout: Add a determine_rate hook 2023-06-08 18:39:27 -07:00
clk-lochnagar.c clk: lochnagar: Add a determine_rate hook 2023-06-08 18:39:27 -07:00
clk-loongson1.c clk: loongson1: Re-implement the clock driver 2023-03-21 16:34:23 -07:00
clk-loongson2.c clk: clk-loongson2: add clock controller driver support 2023-03-27 12:15:26 -07:00
clk-max9485.c
clk-max77686.c
clk-milbeaut.c clock: milbeaut: use devm_platform_get_and_ioremap_resource() 2023-03-29 14:48:32 -07:00
clk-moxart.c
clk-multiplier.c
clk-mux.c
clk-nomadik.c clk: nomadik: correct struct name kernel-doc warning 2022-12-09 10:26:25 -08:00
clk-npcm7xx.c
clk-nspire.c
clk-oxnas.c
clk-palmas.c clk: palmas: Convert to platform remove callback returning void 2023-03-28 19:23:37 -07:00
clk-plldig.c
clk-pwm.c clk: pwm: Convert to platform remove callback returning void 2023-03-28 19:23:37 -07:00
clk-qoriq.c clk: qoriq: Add a determine_rate hook 2023-06-08 18:39:27 -07:00
clk-renesas-pcie.c Nothing looks out of the ordinary in this batch of clk driver updates. There 2023-04-29 17:29:39 -07:00
clk-rk808.c
clk-s2mps11.c clk: s2mps11: Convert to platform remove callback returning void 2023-03-28 19:23:37 -07:00
clk-scmi.c
clk-scpi.c clk: scpi: Convert to platform remove callback returning void 2023-03-28 19:23:37 -07:00
clk-si514.c clk: si514: Use managed of_clk_add_hw_provider() 2023-04-10 12:56:24 -07:00
clk-si521xx.c clk: si521xx: Clock driver for Skyworks Si521xx I2C PCIe clock generators 2023-03-27 10:47:42 -07:00
clk-si544.c
clk-si570.c clk: si570: Use managed of_clk_add_hw_provider() 2023-04-10 12:56:24 -07:00
clk-si5341.c clk: si5341: Add a determine_rate hook 2023-06-08 18:39:27 -07:00
clk-si5351.c clk: si5351: Use managed of_clk_add_hw_provider() 2023-04-10 12:56:25 -07:00
clk-si5351.h
clk-sp7021.c clk: sp7021: Adjust width of _m in HWM_FIELD_PREP() 2023-05-02 18:34:26 -07:00
clk-sparx5.c
clk-stm32f4.c clk: stm32f4: mux: Add a determine_rate hook 2023-06-08 18:39:27 -07:00
clk-stm32h7.c clk: stm32h7: Remove an unused field in struct stm32_fractional_divider 2023-04-03 14:10:42 -07:00
clk-stm32mp1.c clk: stm32mp1: Convert to platform remove callback returning void 2023-03-28 19:23:37 -07:00
clk-tps68470.c
clk-twl6040.c
clk-versaclock5.c clk: vc5: clkout: Add a determine_rate hook 2023-06-08 18:39:28 -07:00
clk-versaclock7.c
clk-vt8500.c
clk-wm831x.c clk: wm831x: clkout: Add a determine_rate hook 2023-06-08 18:39:28 -07:00
clk-xgene.c
clk.c clk: nodrv: Add a determine_rate hook 2023-06-08 18:39:25 -07:00
clk.h
clkdev.c
Kconfig Nothing looks out of the ordinary in this batch of clk driver updates. There 2023-04-29 17:29:39 -07:00
Makefile Merge branches 'clk-starfive', 'clk-fractional' and 'clk-devmof' into clk-next 2023-04-25 11:50:49 -07:00