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fc35c1966e
large change that introduces runtime PM support to the clk framework. Now we properly call runtime PM operations on the device providing a clk when the clk is in use. This helps on SoCs where the clks provided by a device need something to be powered on before using the clks, like power domains or regulators. It also helps power those things down when clks aren't in use. The other core change is a devm API addition for clk providers so we can get rid of a bunch of clk driver remove functions that are just doing of_clk_del_provider(). Outside of the core, we have the usual addition of clk drivers and smattering of non-critical fixes to existing drivers. The biggest diff is support for Mediatek MT2712 and MT7622 SoCs, but those patches really just add a bunch of data. By the way, we're trying something new here where we build the tree up with topic branches. We plan to work this into our workflow so that we don't step on each other's toes, and so the fixes branch can be merged on an as-needed basis. Core: - Runtime PM support for clk providers - devm API for of_clk_add_hw_provider() New Drivers: - Mediatek MT2712 and MT7622 - Renesas R-Car V3M SoC Updates: - Runtime PM support for Samsung exynos5433/exynos4412 providers - Removal of clkdev aliases on Samsung SoCs - Convert clk-gpio to use gpio descriptors - Various driver cleanups to match kernel coding style - Amlogic Video Processing Unit VPU and VAPB clks - Sigma-delta modulation for Allwinner audio PLLs - Allwinner A83t Display clks - Support for the second display unit clock on Renesas RZ/G1E - Suspend/resume support for Renesas R-Car Gen3 CPG/MSSR - New clock ids for Rockchip rk3188 and rk3368 SoCs - Various 'const' markings on clk_ops structures - RPM clk support on Qualcomm MSM8996/MSM8660 SoCs -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIcBAABCAAGBQJaD3qRAAoJEK0CiJfG5JUlOLgQAKWekgG/IYgcPzPWDYfg8Hwr sVVUK7+q7TVfbHsbYVikJuUaxutKZ0onnrYmOalTTyyxqL2E1/rYScnxdYHfcwX8 cyfHebRHsbh/Xg45ktwjzBkO49nwuppkpXd/V80GSBUZ+lsIVl5DUrrFAZdRUEdr CEsAsF9tEWIl+0gqXYNuiKBV7QAYv5BUPrbJQf0PwL6jX0OAhLv+ukfN8BdmYsOb rdoqhdgmyHkTuIMqsC/H2yP59aAKBse7wxIYebDiTdbPWfTkC9q927fTs4A02F6L sHfLvCpfuB4rOjXy6LSd1gMGWIcjotZai+idHBqtNLLVz6exF1QpUCp+pZjEULbA /Sx9lk8A3cYoa8pTu1NrrZbZX17iHkFswqMF3T20nhUN9+Ti597ZEbRcWDcoEZtw v2NznOTJ7Mm2SrNHOvDklstggNIGcwiAEePGMo7rJNEQZChpDjQj/gJWKzn0UwL4 zfk+0EzoejPdvZ5FJUfmlr8Tqk53uw+y7/0xQ6gf8lDviTrzzoeXtJUyumGBiuGx RxFywf8n02oLYRJm5hu+0NkC+/bX0Lxg/kwiR6FLBFbBFgkWyp7FGcxhlm6ZiBfe 0KkPciWslNavn5KhljIkZDbXymbvhhSr9uBEFsyeJueA5q7sSghWloL8Ag1cac3W e6swD1ngXtM/t5gjOLhR =hC7z -----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: "We have two changes to the core framework this time around. The first being a large change that introduces runtime PM support to the clk framework. Now we properly call runtime PM operations on the device providing a clk when the clk is in use. This helps on SoCs where the clks provided by a device need something to be powered on before using the clks, like power domains or regulators. It also helps power those things down when clks aren't in use. The other core change is a devm API addition for clk providers so we can get rid of a bunch of clk driver remove functions that are just doing of_clk_del_provider(). Outside of the core, we have the usual addition of clk drivers and smattering of non-critical fixes to existing drivers. The biggest diff is support for Mediatek MT2712 and MT7622 SoCs, but those patches really just add a bunch of data. By the way, we're trying something new here where we build the tree up with topic branches. We plan to work this into our workflow so that we don't step on each other's toes, and so the fixes branch can be merged on an as-needed basis. Summary: Core: - runtime PM support for clk providers - devm API for of_clk_add_hw_provider() New Drivers: - Mediatek MT2712 and MT7622 - Renesas R-Car V3M SoC Updates: - runtime PM support for Samsung exynos5433/exynos4412 providers - removal of clkdev aliases on Samsung SoCs - convert clk-gpio to use gpio descriptors - various driver cleanups to match kernel coding style - Amlogic Video Processing Unit VPU and VAPB clks - sigma-delta modulation for Allwinner audio PLLs - Allwinner A83t Display clks - support for the second display unit clock on Renesas RZ/G1E - suspend/resume support for Renesas R-Car Gen3 CPG/MSSR - new clock ids for Rockchip rk3188 and rk3368 SoCs - various 'const' markings on clk_ops structures - RPM clk support on Qualcomm MSM8996/MSM8660 SoCs" * tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (137 commits) clk: stm32h7: fix test of clock config clk: pxa: fix building on older compilers clk: sunxi-ng: a83t: Fix i2c buses bits clk: ti: dra7-atl-clock: fix child-node lookups clk: qcom: common: fix legacy board-clock registration clk: uniphier: fix DAPLL2 clock rate of Pro5 clk: uniphier: fix parent of miodmac clock data clk: hi3798cv200: correct parent mux clock for 'clk_sdio0_ciu' clk: hisilicon: Delete an error message for a failed memory allocation in hisi_register_clkgate_sep() clk: hi3660: fix incorrect uart3 clock freqency clk: kona-setup: Delete error messages for failed memory allocations ARC: clk: fix spelling mistake: "configurarion" -> "configuration" clk: cdce925: remove redundant check for non-null parent_name clk: versatile: Improve sizeof() usage clk: versatile: Delete error messages for failed memory allocations clk: ux500: Improve sizeof() usage clk: ux500: Delete error messages for failed memory allocations clk: spear: Delete error messages for failed memory allocations clk: ti: Delete error messages for failed memory allocations clk: mmp: Adjust checks for NULL pointers ...
104 lines
3.4 KiB
Plaintext
104 lines
3.4 KiB
Plaintext
* Samsung Audio Subsystem Clock Controller
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The Samsung Audio Subsystem clock controller generates and supplies clocks
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to Audio Subsystem block available in the S5PV210 and Exynos SoCs. The clock
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binding described here is applicable to all SoCs in Exynos family.
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Required Properties:
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- compatible: should be one of the following:
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- "samsung,exynos4210-audss-clock" - controller compatible with all Exynos4 SoCs.
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- "samsung,exynos5250-audss-clock" - controller compatible with Exynos5250
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SoCs.
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- "samsung,exynos5410-audss-clock" - controller compatible with Exynos5410
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SoCs.
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- "samsung,exynos5420-audss-clock" - controller compatible with Exynos5420
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SoCs.
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- reg: physical base address and length of the controller's register set.
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- #clock-cells: should be 1.
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- clocks:
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- pll_ref: Fixed rate PLL reference clock, parent of mout_audss. "fin_pll"
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is used if not specified.
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- pll_in: Input PLL to the AudioSS block, parent of mout_audss. "fout_epll"
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is used if not specified.
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- cdclk: External i2s clock, parent of mout_i2s. "cdclk0" is used if not
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specified.
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- sclk_audio: Audio bus clock, parent of mout_i2s. "sclk_audio0" is used if
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not specified.
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- sclk_pcm_in: PCM clock, parent of sclk_pcm. "sclk_pcm0" is used if not
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specified.
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- clock-names: Aliases for the above clocks. They should be "pll_ref",
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"pll_in", "cdclk", "sclk_audio", and "sclk_pcm_in" respectively.
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Optional Properties:
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- power-domains: a phandle to respective power domain node as described by
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generic PM domain bindings (see power/power_domain.txt for more
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information).
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The following is the list of clocks generated by the controller. Each clock is
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assigned an identifier and client nodes use this identifier to specify the
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clock which they consume. Some of the clocks are available only on a particular
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Exynos4 SoC and this is specified where applicable.
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Provided clocks:
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Clock ID SoC (if specific)
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-----------------------------------------------
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mout_audss 0
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mout_i2s 1
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dout_srp 2
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dout_aud_bus 3
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dout_i2s 4
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srp_clk 5
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i2s_bus 6
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sclk_i2s 7
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pcm_bus 8
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sclk_pcm 9
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adma 10 Exynos5420
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Example 1: An example of a clock controller node using the default input
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clock names is listed below.
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clock_audss: audss-clock-controller@3810000 {
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compatible = "samsung,exynos5250-audss-clock";
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reg = <0x03810000 0x0C>;
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#clock-cells = <1>;
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};
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Example 2: An example of a clock controller node with the input clocks
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specified.
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clock_audss: audss-clock-controller@3810000 {
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compatible = "samsung,exynos5250-audss-clock";
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reg = <0x03810000 0x0C>;
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#clock-cells = <1>;
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clocks = <&clock 1>, <&clock 7>, <&clock 138>, <&clock 160>,
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<&ext_i2s_clk>;
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clock-names = "pll_ref", "pll_in", "sclk_audio", "sclk_pcm_in", "cdclk";
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};
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Example 3: I2S controller node that consumes the clock generated by the clock
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controller. Refer to the standard clock bindings for information
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about 'clocks' and 'clock-names' property.
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i2s0: i2s@3830000 {
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compatible = "samsung,i2s-v5";
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reg = <0x03830000 0x100>;
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dmas = <&pdma0 10
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&pdma0 9
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&pdma0 8>;
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dma-names = "tx", "rx", "tx-sec";
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clocks = <&clock_audss EXYNOS_I2S_BUS>,
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<&clock_audss EXYNOS_I2S_BUS>,
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<&clock_audss EXYNOS_SCLK_I2S>,
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<&clock_audss EXYNOS_MOUT_AUDSS>,
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<&clock_audss EXYNOS_MOUT_I2S>;
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clock-names = "iis", "i2s_opclk0", "i2s_opclk1",
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"mout_audss", "mout_i2s";
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};
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