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path: root/drivers/clk/renesas/r9a07g043-cpg.c
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2025-06-10clk: renesas: rzg2l: Add support for MSTOP in clock enable/disable APIClaudiu Beznea
The RZ/{G2L,V2L,G3S} CPG versions support a feature called MSTOP. Each module has one or more MSTOP bits associated with it, and these bits need to be configured along with the module clocks. Setting the MSTOP bits switches the module between normal and standby states. Previously, MSTOP support was abstracted through power domains (struct generic_pm_domain::{power_on, power_off} APIs). With this abstraction, the order of setting the MSTOP and CLKON bits was as follows: Previous Order: A/ Switching to Normal State (e.g., during probe): 1/ Clear module MSTOP bit 2/ Set module CLKON bit B/ Switching to Standby State (e.g., during remove): 1/ Clear CLKON bit 2/ Set MSTOP bit However, in some cases (when the clock is disabled through devres), the order may have been (due to the issue described in link section): 1/ Set MSTOP bit 2/ Clear CLKON bit Recently, the hardware team has suggested that the correct order to set the MSTOP and CLKON bits is: Updated Order: A/ Switching to Normal State (e.g., during probe): 1/ Set CLKON bit 2/ Clear MSTOP bit B/ Switching to Standby State (e.g., during remove): 1/ Set MSTOP bit 2/ Clear CLKON bit To prevent future issues due to incorrect ordering, the MSTOP setup has now been implemented in rzg2l_mod_clock_endisable(), ensuring compliance with the sequence suggested in Figure 41.5: Module Standby Mode Procedure from the RZ/G3S HW manual, Rev1.10. Additionally, since multiple clocks of a single module may be mapped to a single MSTOP bit, MSTOP setup is reference-counted. Furthermore, as all modules start in the normal state after reset, if the module clocks are disabled, the module state is switched to standby. This prevents keeping the module in an invalid state, as recommended by the hardware team. Link: https://lore.kernel.org/all/20250215130849.227812-1-claudiu.beznea.uj@bp.renesas.com/ Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/20250527112403.1254122-5-claudiu.beznea.uj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2025-02-03clk: renesas: r9a07g043: Fix HP clock source for RZ/FiveLad Prabhakar
According to the Rev.1.20 hardware manual for the RZ/Five SoC, the clock source for HP is derived from PLL6 divided by 2. Correct the implementation by configuring HP as a fixed clock source instead of a MUX. The `CPG_PL6_ETH_SSEL' register, which is available on the RZ/G2UL SoC, is not present on the RZ/Five SoC, necessitating this change. Fixes: 95d48d270305ad2c ("clk: renesas: r9a07g043: Add support for RZ/Five SoC") Cc: stable@vger.kernel.org Reported-by: Hien Huynh <hien.huynh.px@renesas.com> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/20250127173159.34572-1-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2024-07-30clk: renesas: r9a07g043: Add LCDC clock and reset entriesBiju Das
Add LCDC clock and reset entries to CPG driver. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Acked-by: Conor Dooley <conor.dooley@microchip.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/20240709135152.185042-5-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2024-04-23clk: renesas: r9a07g043: Add clock and reset entry for PLICLad Prabhakar
Add the missing clock and reset entry for PLIC. Also add R9A07G043_NCEPLIC_ACLK to the critical clocks list. Fixes: 95d48d270305ad2c ("clk: renesas: r9a07g043: Add support for RZ/Five SoC") Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20240403200952.633084-1-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2024-03-26clk: renesas: r9a07g043: Mark mod_clks and resets arrays as constPaul Barker
The r9a07g043_mod_clks and r9a07g043_resets arrays describe the module clocks and reset signals (respectively) in this SoC and do not change at runtime. Signed-off-by: Paul Barker <paul.barker.ct@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20240320082831.9666-1-paul.barker.ct@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2024-02-13clk: renesas: r9a07g04[34]: Fix typo for sel_shdi variableClaudiu Beznea
Fix typo for sel_shdi variable. Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20240131102930.1841901-3-claudiu.beznea.uj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2024-02-13clk: renesas: r9a07g04[34]: Use SEL_SDHI1_STS status configuration for SD1 muxClaudiu Beznea
The status configuration for SD1 mux clock is SEL_SDHI1_STS. Fix it. Fixes: 16b86e5c03c5 ("clk: renesas: rzg2l: Refactor SD mux driver") Reported-by: Hien Huynh <hien.huynh.px@renesas.com> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20240131102930.1841901-2-claudiu.beznea.uj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2024-01-31clk: renesas: r9a07g043: Add clock and reset entries for CRUBiju Das
Add CRU clock and reset entries to CPG driver. CRU_SYSCLK and CRU_VCLK clocks need to be turned ON/OFF in particular sequence for the CRU block hence add these clocks to r9a07g043_no_pm_mod_clks[] array and pass it as part of CPG data for RZ/G2UL SoCs. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20240123114415.290918-1-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-10-10clk: renesas: rzg2l: Refactor SD mux driverClaudiu Beznea
Refactor SD MUX driver to be able to reuse the same code on RZ/G3S. RZ/G2{L,UL} has a limitation with regards to switching the clock source for SD MUX (MUX clock source has to be switched to 266MHz before switching b/w 533MHz and 400MHz). Rework the handling of this limitation to use a clock notifier that is registered according to platform based initialization data, so the SD MUX code can be reused on RZ/G3S. As RZ/G2{L,UL} and RZ/G3S use different bits in different registers to check if the clock switching has been done, this configuration (register offset, register bits and bitfield width) is now passed through struct cpg_core_clk::sconf (status configuration) from platform specific initialization code. Along with struct cpg_core_clk::sconf the mux table indices are also passed from platform specific initialization code. Also, mux flags are now passed to DEF_SD_MUX() as they will be used later by RZ/G3S. CPG_WEN_BIT macro has been introduced to select properly the WEN bit of various registers. Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20231006103959.197485-3-claudiu.beznea.uj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-10-05clk: renesas: rzg2l: Remove CPG_SDHI_DSEL from generic headerClaudiu Beznea
Remove CPG_SDHI_DSEL and its bits from the generic header as RZ/G3S has different offset registers and bits for this, thus avoid mixing them. Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230929053915.1530607-10-claudiu.beznea@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-07-25clk: renesas: r9a07g043: Add MTU3a clock and reset entryBiju Das
Add MTU3a clock and reset entry to CPG driver. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230714075649.146978-1-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2022-10-26clk: renesas: r9a07g043: Drop WDT2 clock and reset entryLad Prabhakar
WDT CH2 is specifically to check the operation of Cortex-M33 CPU and if used from CA55 CPU would result in an unexpected behaviour. Hence drop WDT2 clock and reset entries. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Link: https://lore.kernel.org/r/20221009231253.15592-1-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2022-07-05clk: renesas: r9a07g043: Add support for RZ/Five SoCLad Prabhakar
Renesas RZ/Five SoC has almost the same clock structure compared to the Renesas RZ/G2UL SoC, re-use the r9a07g043-cpg.c file to add support for RZ/Five SoC. This patch splits up the clocks and reset arrays for RZ/G2UL and RZ/Five SoC using #ifdef CONFIG_ARM64 and #ifdef CONFIG_RISCV checks. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Link: https://lore.kernel.org/r/20220622181723.13033-3-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2022-05-05clk: renesas: rzg2l: Make use of CLK_MON registers optionalPhil Edworthy
The RZ/V2M SoC doesn't use CLK_MON registers, so make them optional. Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com> Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com> Link: https://lore.kernel.org/r/20220503115557.53370-9-phil.edworthy@renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2022-05-05clk: renesas: rzg2l: Set HIWORD mask for all mux and dividersPhil Edworthy
All of the muxes and dividers that can be modified require the HIWORD flags, so make the macros set them. It won't affect read only muxes and dividers. This will make the clock tables a little easier to read, particularly for new SoCs coming. Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com> Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com> Link: https://lore.kernel.org/r/20220503115557.53370-8-phil.edworthy@renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2022-05-05clk: renesas: rzg2l: Add read only versions of the clk macrosPhil Edworthy
This just makes the clk tables easier to read. Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com> Link: https://lore.kernel.org/r/20220503115557.53370-7-phil.edworthy@renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2022-05-05clk: renesas: rzg2l: Move the DEF_MUX array size calc into the macroPhil Edworthy
We only ever use ARRAY_SIZE() to populate the number of parents, so move this into the macro to always detect it automatically. This also makes the tables of clocks a little simpler. Similarly for the DEF_SD_MUX macro. Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com> Link: https://lore.kernel.org/r/20220503115557.53370-6-phil.edworthy@renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2022-05-05clk: renesas: r9a07g043: Add clock and reset entries for ADCBiju Das
Add clock and reset entries for ADC block in CPG driver. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Link: https://lore.kernel.org/r/20220501083450.26541-5-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2022-05-05clk: renesas: r9a07g043: Add TSU clock and reset entryBiju Das
Add TSU clock and reset entry to CPG driver. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Link: https://lore.kernel.org/r/20220501083450.26541-4-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2022-05-05clk: renesas: r9a07g043: Add RSPI clock and reset entriesBiju Das
Add RSPI{0,1,2} clock and reset entries to CPG driver. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Link: https://lore.kernel.org/r/20220501083450.26541-3-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2022-05-05clk: renesas: r9a07g043: Add clock and reset entries for SPI Multi I/O Bus ↵Biju Das
Controller Add clock and reset entries for SPI Multi I/O Bus Controller. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Link: https://lore.kernel.org/r/20220501083450.26541-2-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2022-04-28clk: renesas: r9a07g043: Add WDT clock and reset entriesBiju Das
Add WDT{0,2} clock and reset entries to CPG driver. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Link: https://lore.kernel.org/r/20220425095244.156720-7-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2022-04-28clk: renesas: r9a07g043: Add OSTM clock and reset entriesBiju Das
Add OSTM{0,1,2} clock and reset entries to CPG driver. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Link: https://lore.kernel.org/r/20220425095244.156720-6-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2022-04-28clk: renesas: r9a07g043: Add clock and reset entries for CANFDBiju Das
Add clock and reset entries for CANFD in CPG driver. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Link: https://lore.kernel.org/r/20220425095244.156720-5-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2022-04-28clk: renesas: r9a07g043: 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/20220425095244.156720-4-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2022-04-28clk: renesas: r9a07g043: Add SSIF-2 clock and reset entriesBiju Das
Add SSIF-2{0,1,2,3} clock and reset entries in CPG driver. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Link: https://lore.kernel.org/r/20220425095244.156720-3-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2022-04-28clk: renesas: r9a07g043: 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> Link: https://lore.kernel.org/r/20220425095244.156720-2-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2022-04-13clk: renesas: r9a07g043: Add SDHI clock and reset entriesBiju Das
Add SDHI{0,1} mux, clock and reset entries to 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/20220402074626.25624-5-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2022-04-13clk: renesas: r9a07g043: Add GbEthernet clock/resetBiju Das
Add ETH{0,1} clock/reset entries to 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/20220402074626.25624-4-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2022-04-13clk: renesas: r9a07g043: Add ethernet clock sourcesBiju Das
Ethernet reference clock can be sourced from PLL5_500 or PLL6. Add support for ethernet source clock selection using SEL_PLL_6_2 mux. 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/20220402074626.25624-3-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2022-04-13clk: renesas: r9a07g043: Add GPIO clock and reset entriesBiju Das
Add GPIO 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/20220402074626.25624-2-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2022-04-13clk: renesas: Add support for RZ/G2UL SoCBiju Das
The clock structure for RZ/G2UL is almost identical to RZ/G2L SoC with fewer IP blocks. The IP blocks such as WDT1, GPT, H264, GPU and POEG are not present on RZ/G2UL. This patch adds minimal clock and reset entries required to boot the system on Renesas RZ/G2UL SMARC EVK and binds it with the RZ/G2L CPG core 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/20220412161314.13800-2-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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