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path: root/drivers/clk/renesas
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2021-09-02Merge tag 'clk-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux Pull clk updates from Stephen Boyd: "Nothing changed in the clk framework core this time around. We did get some updates to the basic clk types to use determine_rate for the divider type and add a power of two fractional divider flag though. Otherwise, this is a collection of clk driver updates. More than half the diffstat is in the Qualcomm clk driver where we add a bunch of data to describe clks on various SoCs and fix bugs. The other big new thing in here is the Mediatek MT8192 clk driver. That's been under review for a while and it's nice to see that it's finally upstream. Beyond that it's the usual set of minor fixes and tweaks to clk drivers. There are some non-clk driver bits in here which have all been acked by the respective maintainers. New Drivers: - Support video, gpu, display clks on qcom sc7280 SoCs - GCC clks on qcom MSM8953, SM4250/6115, and SM6350 SoCs - Multimedia clks (MMCC) on qcom MSM8994/MSM8992 - RPMh clks on qcom SM6350 SoCs - Support for Mediatek MT8192 SoCs - Add display (DU and DSI) clocks on Renesas R-Car V3U - Add I2C, DMAC, USB, sound (SSIF-2), GPIO, CANFD, and ADC clocks and resets on Renesas RZ/G2L Updates: - Support the SD/OE pin on IDT VersaClock 5 and 6 clock generators - Add power of two flag to fractional divider clk type - Migrate some clk drivers to clk_divider_ops.determine_rate - Migrate to clk_parent_data in gcc-sdm660 - Fix CLKOUT clocks on i.MX8MM and i.MX8MN by using imx_clk_hw_mux2 - Switch from .round_rate to .determine_rate in clk-divider-gate - Fix clock tree update for TF-A controlled clocks for all i.MX8M - Add missing M7 core clock for i.MX8MN - YAML conversion of rk3399 clock controller binding - Removal of GRF dependency for the rk3328/rk3036 pll types - Drop CLK_IS_CRITICAL flag from Tegra fuse clk - Make CLK_R9A06G032 Kconfig symbol invisible - Convert various DT bindings to YAML" * tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (128 commits) dt-bindings: clock: samsung: fix header path in example clk: tegra: fix old-style declaration clk: qcom: Add SM6350 GCC driver MAINTAINERS: clock: include S3C and S5P in Samsung SoC clock entry dt-bindings: clock: samsung: convert S5Pv210 AudSS to dtschema dt-bindings: clock: samsung: convert Exynos AudSS to dtschema dt-bindings: clock: samsung: convert Exynos4 to dtschema dt-bindings: clock: samsung: convert Exynos3250 to dtschema dt-bindings: clock: samsung: convert Exynos542x to dtschema dt-bindings: clock: samsung: add bindings for Exynos external clock dt-bindings: clock: samsung: convert Exynos5250 to dtschema clk: vc5: Add properties for configuring SD/OE behavior clk: vc5: Use dev_err_probe dt-bindings: clk: vc5: Add properties for configuring the SD/OE pin dt-bindings: clock: brcm,iproc-clocks: fix armpll properties clk: zynqmp: Fix kernel-doc format clk: at91: clk-generated: Limit the requested rate to our range clk: ralink: avoid to set 'CLK_IS_CRITICAL' flag for gates clk: zynqmp: Fix a memory leak clk: zynqmp: Check the return type ...
2021-08-29Merge tag 'clk-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux Pull clk fix from Stephen Boyd: "One hotfix for a NULL pointer deref in the Renesas usb clk driver" * tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: clk: renesas: rcar-usb2-clock-sel: Fix kernel NULL pointer dereference
2021-08-28clk: renesas: rcar-usb2-clock-sel: Fix kernel NULL pointer dereferenceAdam Ford
The probe was manually passing NULL instead of dev to devm_clk_hw_register. This caused a Unable to handle kernel NULL pointer dereference error. Fix this by passing 'dev'. Signed-off-by: Adam Ford <aford173@gmail.com> Fixes: a20a40a8bbc2 ("clk: renesas: rcar-usb2-clock-sel: Fix error handling in .probe()") Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2021-08-13clk: renesas: Make CLK_R9A06G032 invisibleGeert Uytterhoeven
When configuring a kernel including support for Renesas ARM/ARM64 Socs, but excluding support for the RZ/N1D SoC, the user is always asked about the RZ/N1D clock driver. As this driver is already auto-selected when building a kernel including support for the RZ/N1D SoC, there is no need to make the CLK_R9A06G032 symbol visible, unless compile-testing. Align the symbol description with the other symbols. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Link: https://lore.kernel.org/r/4f3d30c730c30546f702715ffc648922a8156703.1628672649.git.geert+renesas@glider.be
2021-07-26clk: renesas: r9a07g044: Add entry for fixed clock P0_DIV2Lad Prabhakar
Add entry for fixed core clock P0_DIV2 and assign LAST_DT_CORE_CLK to R9A07G044_CLK_P0_DIV2. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com> Link: https://lore.kernel.org/r/20210719143811.2135-5-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-07-19clk: renesas: r9a07g044: Add clock and reset entries for ADCLad Prabhakar
Add clock and reset entries for ADC block in CPG driver. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com> Link: https://lore.kernel.org/r/20210719085840.21842-4-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-07-19clk: renesas: r9a07g044: Add clock and reset entries for CANFDLad Prabhakar
Add clock and reset entries for CANFD in CPG driver. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com> Link: https://lore.kernel.org/r/20210715182123.23372-6-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-07-19clk: renesas: Rename renesas-rzg2l-cpg.[ch] to rzg2l-cpg.[ch]Geert Uytterhoeven
Rename renesas-rzg2l-cpg.c and renesas-rzg2l-cpg.h to rzg2l-cpg.c resp. rzg2l-cpg.h, for consistency with other (sub)drivers. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Acked-by: Biju Das <biju.das.jz@bp.renesas.com> Link: https://lore.kernel.org/r/edc442daaedffcf10e835ff479d906fcae0e59db.1626268821.git.geert+renesas@glider.be
2021-07-19clk: renesas: r9a07g044: Add GPIO clock and reset entriesLad Prabhakar
Add GPIO clock and reset entries in CPG driver. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com> Link: https://lore.kernel.org/r/20210712194422.12405-4-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-07-19clk: renesas: r9a07g044: Add SSIF-2 clock and reset entriesBiju Das
Add SSIF-2 clock and reset entries in CPG driver. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Link: https://lore.kernel.org/r/20210702135010.5937-3-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-07-19clk: renesas: r9a07g044: Add USB clocks/resetsBiju Das
Add clock/reset entries for USB PHY control, USB2.0 host and device. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Link: https://lore.kernel.org/r/20210630073013.22415-5-biju.das.jz@bp.renesas.com [geert: s/usb0_device/usb0_func] Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-07-19clk: renesas: r9a07g044: Add DMAC clocks/resetsBiju Das
Add DMAC clock and reset entries in CPG driver. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Link: https://lore.kernel.org/r/20210626081344.5783-10-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-07-19clk: renesas: r9a07g044: Add I2C clocks/resetsBiju Das
Add I2C{0,1,2,3} clock and reset entries. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Link: https://lore.kernel.org/r/20210626081344.5783-9-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-07-19clk: renesas: r8a779a0: Add the DSI clocksKieran Bingham
The DSI clock is incorrectly defined as a fixed clock. This demonstrates itself as the dsi-encoders failing to correctly enable and start their PPI and HS clocks internally, and causes failures. Move the DSI parent clock to match the updates in the BSP, which resolves the initialisation procedures. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Fixes: 17bcc8035d2d19fc ("clk: renesas: cpg-mssr: Add support for R-Car V3U") Link: https://lore.kernel.org/r/20210622232711.3219697-3-kieran.bingham@ideasonboard.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-07-19clk: renesas: r8a779a0: Add the DU clockKieran Bingham
The DU clock is added to the S3D1 clock parent. The Renesas BSP lists S2D1 as the clock parent, however there is no S2 clock on this platform. S3D1 is chosen as a best effort guess and demonstrates functionality but is not guaranteed to be correct. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Link: https://lore.kernel.org/r/20210622232711.3219697-2-kieran.bingham@ideasonboard.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-07-19clk: renesas: rzg2: Rename i2c-dvfs to iic-pmicGeert Uytterhoeven
As RZ/G2 SoCs do not support DVFS, the "iic-dvfs" module was renamed to "iic-pmic" in the RZ/G Series, 2nd Generation User’s Manual: Hardware Rev. 1.00. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Link: https://lore.kernel.org/r/3e549b41989ff2797b998a1c749c9f607845f44a.1624016693.git.geert+renesas@glider.be
2021-07-19clk: renesas: rzg2l: Fix off-by-one check in rzg2l_cpg_clk_src_twocell_get()Lad Prabhakar
Fix clock index out of range check for module clocks in rzg2l_cpg_clk_src_twocell_get(). Fixes: ef3c613ccd68 ("clk: renesas: Add CPG core wrapper for RZ/G2L SoC") Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Link: https://lore.kernel.org/r/20210617155432.18827-1-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-07-19clk: renesas: rzg2l: Avoid mixing error pointers and NULLDan Carpenter
These functions accidentally return both error pointers and NULL when there is an error. It doesn't cause a problem but it is confusing and seems unintentional. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Link: https://lore.kernel.org/r/YMtY7nOtqEvTokh7@mwanda Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-07-19clk: renesas: rzg2l: Fix a double free on errorDan Carpenter
The "pll_clk" and "clock" pointers are allocated with devm_kzalloc() so freeing them with kfree() will lead to a double free. This would only happen if probe failed, and the system is not bootable. Fixes: ef3c613ccd68 ("clk: renesas: Add CPG core wrapper for RZ/G2L SoC") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Link: https://lore.kernel.org/r/YMtYs7LVveYH4eRe@mwanda Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-07-19clk: renesas: rzg2l: Fix return value and unused assignmentYang Li
Currently the function returns NULL on error, so exact error code is lost. This patch changes return convention of the function to use ERR_PTR() on error instead. Reported-by: Abaci Robot <abaci@linux.alibaba.com> Signed-off-by: Yang Li <yang.lee@linux.alibaba.com> Link: https://lore.kernel.org/r/1623896524-102058-1-git-send-email-yang.lee@linux.alibaba.com [geert: Drop curly braces] Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-07-19clk: renesas: rzg2l: Remove unneeded semicolonYang Li
Eliminate the following coccicheck warning: ./drivers/clk/renesas/renesas-rzg2l-cpg.c:299:2-3: Unneeded semicolon Reported-by: Abaci Robot <abaci@linux.alibaba.com> Signed-off-by: Yang Li <yang.lee@linux.alibaba.com> Link: https://lore.kernel.org/r/1623749970-38020-1-git-send-email-yang.lee@linux.alibaba.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-07-12dt-bindings: clock: r9a07g044-cpg: Update clock/reset definitionsBiju Das
Update clock and reset definitions as per RZ/G2L_clock_list_r02_02.xlsx and RZ/G2L HW(Rev.0.50) manual. Update {GIC,IA55,SCIF} clock and reset entries in the CPG driver, and separate reset from module clocks in order to handle them efficiently. Update the SCIF0 clock and reset index in the SoC DTSI. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Link: https://lore.kernel.org/r/20210626081344.5783-6-biju.das.jz@bp.renesas.com Link: https://lore.kernel.org/r/20210626081344.5783-7-biju.das.jz@bp.renesas.com Link: https://lore.kernel.org/r/20210626081344.5783-8-biju.das.jz@bp.renesas.com [geert: Squashed 3 commits] Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-07-12clk: renesas: r9a07g044: Add P2 Clock supportBiju Das
Add support for P2 clock which is sourced from pll3_div2_4_2. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Link: https://lore.kernel.org/r/20210626081344.5783-5-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-07-12clk: renesas: r9a07g044: Fix P1 ClockBiju Das
As per RZ/G2L HW Manual(Rev.0.50) P1 is sourced from pll3_div2_4. So fix the clock definitions for P1. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Link: https://lore.kernel.org/r/20210626081344.5783-4-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-07-12clk: renesas: r9a07g044: Rename divider tableBiju Das
As per RZ/G2L HW Manual (Rev.0.50), CPG_PL3A_DDIV,CPG_PL3B_DDIV and CPG_PL2_DDIV(for P0) shares same divider table entries. Rename clk_div_table dtable_3b to clk_div_table dtable_1_32 so that it can be reused. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Link: https://lore.kernel.org/r/20210626081344.5783-3-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-07-12clk: renesas: rzg2l: Add multi clock PM supportBiju Das
Add multi clock PM support for cpg driver. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Link: https://lore.kernel.org/r/20210626081344.5783-2-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-06-10clk: renesas: Add support for R9A07G044 SoCLad Prabhakar
Define the clock outputs supported by RZ/G2L (R9A07G044) SoC and bind it with RZ/G2L CPG core. Based on a patch in the BSP by Binh Nguyen <binh.nguyen.jz@renesas.com>. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com> Link: https://lore.kernel.org/r/20210609153230.6967-10-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-06-10clk: renesas: Add CPG core wrapper for RZ/G2L SoCLad Prabhakar
Add CPG core wrapper for RZ/G2L family. Based on a patch in the BSP by Binh Nguyen <binh.nguyen.jz@renesas.com>. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com> Link: https://lore.kernel.org/r/20210609153230.6967-9-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-05-27clk: renesas: r8a77995: Add ZA2 clockKuninori Morimoto
R-Car D3 ZA2 clock is from PLL0D3 or S0, and it can be controlled by ZA2CKCR. It is needed for R-Car Sound, but is not used so far. Using default settings is very enough at this point. This patch adds it by DEF_FIXED(). Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/87pmxclrmy.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-05-27clk: renesas: cpg-mssr: Make srstclr[] comment block consistentGeert Uytterhoeven
Make the style of the comment block for the Software Reset Clearing Register offsets consistent with the comment blocks for the other register offsets. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Stephen Boyd <sboyd@kernel.org> Link: https://lore.kernel.org/r/97dde75fe3ff27b9639c59a43cddbd9d5c405d0c.1620119700.git.geert+renesas@glider.be
2021-05-27clk: renesas: cpg-mssr: Remove unused [RM]MSTPCR() definitionsGeert Uytterhoeven
The Realtime Module Stop Control Register definitions (RMSTPCR(i)) are incorrect for i >= 8 on R-Car Gen2 and Gen3. As these are unused, and not planned to be used, just like the corresponding Modem Module Stop Control Register definitions (MMSTPCR()) on R-Mobile APE6 (they are intended for the software running on the Real-Time and Modem CPU cores), they can just be removed. Reported-by: Hai Nguyen Pham <hai.pham.ud@renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Stephen Boyd <sboyd@kernel.org> Link: https://lore.kernel.org/r/2d8bc4d9806b419ebb06030d2f31b2ea1e59b1d6.1620119700.git.geert+renesas@glider.be
2021-05-11clk: renesas: r9a06g032: Switch to .determine_rate()Geert Uytterhoeven
As the .round_rate() callback returns a long clock rate, it cannot return clock rates that do not fit in signed long, but do fit in unsigned long. Hence switch the divider clocks on RZ/N1 from the old .round_rate() callback to the newer .determine_rate() callback, which does not suffer from this limitation. Note that range checking is not yet implemented. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/7a384d02b85cdaac4a0e2b357582c8244b9a6f98.1617282116.git.geert+renesas@glider.be
2021-05-11clk: renesas: div6: Implement range checkingGeert Uytterhoeven
Consider the minimum and maximum clock rates imposed by clock users when calculating the most appropriate clock rate in the .determine_rate() callback. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/35ceb262c71f1b2e9864a39bde9dafd78b2981f4.1617281699.git.geert+renesas@glider.be
2021-05-11clk: renesas: div6: Consider all parents for requested rateGeert Uytterhoeven
Currently the .determine_rate() callback considers only the current parent clock, limiting the range of achievable clock rates on DIV6 clocks with multiple parents, as found on SH/R-Mobile SoCs. Extend the callback to consider all available parent clocks. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/60e639692b462f99e0b6ab868c3675b3d97dbdb0.1617281699.git.geert+renesas@glider.be
2021-05-11clk: renesas: div6: Switch to .determine_rate()Geert Uytterhoeven
As the .round_rate() callback returns a long clock rate, it cannot return clock rates that do not fit in signed long, but do fit in unsigned long. Hence switch the DIV6 clocks on SH/R-Mobile and R-Car SoCs from the old .round_rate() callback to the newer .determine_rate() callback, which does not suffer from this limitation. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/7fd8c45cd8bf5c6d928ca69c8b669be35b93de09.1617281699.git.geert+renesas@glider.be
2021-05-11clk: renesas: div6: Simplify src mask handlingGeert Uytterhoeven
Simplify the handling of the register bits to select the parent clock, by storing a bitmask instead of separate shift and width values. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/5f05a5110d222ce5a113e683fe2aa726f4100b73.1617281699.git.geert+renesas@glider.be
2021-05-11clk: renesas: div6: Use clamp() instead of clamp_t()Geert Uytterhoeven
As "div" is already "unsigned int", adding "U" suffixes to the constants "1" and "64" allows us to replace the call to clamp_t() by a call to clamp(). This removes hidden casts, and thus helps the compiler doing a better job at type-checking. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/2670c1e3c82a245666578cbbd1fb20d37932fd8e.1617281699.git.geert+renesas@glider.be
2021-05-11clk: renesas: rcar-usb2-clock-sel: Fix error handling in .probe()Dinghao Liu
The error handling paths after pm_runtime_get_sync() have no refcount decrement, which leads to refcount leak. Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn> Link: https://lore.kernel.org/r/20210415073338.22287-1-dinghao.liu@zju.edu.cn [geert: Remove now unused variable priv] Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-05-11clk: renesas: r8a779a0: Add ISPCS clocksNiklas Söderlund
Add support for the ISPCS clocks on R-Car V3U. Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Link: https://lore.kernel.org/r/20210329223220.1139211-1-niklas.soderlund+renesas@ragnatech.se Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-05-11clk: renesas: rcar-gen3: Add boost support to Z clocksGeert Uytterhoeven
Add support for switching the Z and Z2 clocks between normal and boost modes, by requesting clock rate changes to parent PLLs. Inspired by a patch in the BSP by Takeshi Kihara <takeshi.kihara.df@renesas.com>. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Stephen Boyd <sboyd@kernel.org> Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Link: https://lore.kernel.org/r/20210326120100.1577596-8-geert+renesas@glider.be
2021-05-11clk: renesas: rcar-gen3: Add custom clock for PLLsGeert Uytterhoeven
Currently the PLLs are modeled as fixed factor clocks, based on initial settings. However, enabling CPU boost clock rates requires increasing the PLL clock rates. Add a custom clock driver to model the PLL clocks. This will allow the Z (CPU) clock driver to request changing the PLL clock rate. Based on a patch in the BSP by Takeshi Kihara <takeshi.kihara.df@renesas.com>. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Stephen Boyd <sboyd@kernel.org> Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Link: https://lore.kernel.org/r/20210326120100.1577596-7-geert+renesas@glider.be
2021-05-11clk: renesas: rcar-gen3: Increase Z clock accuracyGeert Uytterhoeven
Improve accuracy in the .determine_rate() callback for Z and Z2 clocks by using rounded divisions. This is similar to the calculation of rates and multipliers in the .recalc_rate() resp. set_rate() callbacks. Sample impact for a few requested clock rates: - R-Car H3: - Z 500 MHz: 468 MHz => 515 MHz - Z2 1000 MHz: 973 MHz => 1011 MHz - R-Car M3-W: - Z 500 MHz: 422 MHz => 516 MHz - Z2 800 MHz: 750 MHz => 788 MHz Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Stephen Boyd <sboyd@kernel.org> Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Link: https://lore.kernel.org/r/20210326120100.1577596-6-geert+renesas@glider.be
2021-05-11clk: renesas: rcar-gen3: Grammar s/dependent of/dependent on/Geert Uytterhoeven
Fix grammar in comments for cpg_z_clk_set_rate(). Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Stephen Boyd <sboyd@kernel.org> Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Link: https://lore.kernel.org/r/20210326120100.1577596-5-geert+renesas@glider.be
2021-05-11clk: renesas: rcar-gen3: Remove superfluous masking in cpg_z_clk_set_rate()Geert Uytterhoeven
Due to the clamping of mult, "(32 - mult) << __ffs(zclk->mask)" can never exceed the mask. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Stephen Boyd <sboyd@kernel.org> Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Link: https://lore.kernel.org/r/20210326120100.1577596-4-geert+renesas@glider.be
2021-05-11clk: renesas: rcar-gen3: Make cpg_z_clk.mask u32Geert Uytterhoeven
cpg_z_clk.mask contains a mask for a 32-bit register. Hence its size can be reduced from unsigned long to u32. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Stephen Boyd <sboyd@kernel.org> Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Link: https://lore.kernel.org/r/20210326120100.1577596-3-geert+renesas@glider.be
2021-05-11clk: renesas: rcar-gen3: Update Z clock rate formula in commentsGeert Uytterhoeven
The fixed divider in the calculation of the Z and Z2 clock rates was generalized from a hardcoded value of two to a parameterized value, but the comments were not updated accordingly. Fixes: 20cc05ba04a93f05 ("clk: renesas: rcar-gen3: Parameterise Z and Z2 clock fixed divisor") Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Stephen Boyd <sboyd@kernel.org> Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Link: https://lore.kernel.org/r/20210326120100.1577596-2-geert+renesas@glider.be
2021-03-30clk: renesas: Zero init clk_init_dataGeert Uytterhoeven
As clk_core_populate_parent_map() checks clk_init_data.num_parents first, and checks clk_init_data.parent_names[] before clk_init_data.parent_data[] and clk_init_data.parent_hws[], leaving the latter uninitialized doesn't do harm for now. However, it is better to play it safe, and initialize all clk_init_data structures to zeroes, to avoid any current and future members containing uninitialized data. Remove a few explicit zero initializers, which are now superfluous. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Stephen Boyd <sboyd@kernel.org> Link: https://lore.kernel.org/r/20210326105434.1574796-1-geert+renesas@glider.be
2021-03-24clk: renesas: Couple of spelling fixesBhaskar Chowdhury
s/suposed/supposed/ s/concurent/concurrent/ Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Link: https://lore.kernel.org/r/20210321075813.9471-1-unixbhaskar@gmail.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-03-12clk: renesas: r8a779a0: Add CMT clocksWolfram Sang
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Link: https://lore.kernel.org/r/20210311092939.3129-2-wsa+renesas@sang-engineering.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-03-12clk: renesas: r8a7795: Add TMU clocksNiklas Söderlund
Add TMU{0,1,2,3,4} clocks. Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Link: https://lore.kernel.org/r/20210310104554.3281912-1-niklas.soderlund+renesas@ragnatech.se Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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