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path: root/drivers/clk/renesas/rzg2l-cpg.c
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2022-10-28clk: renesas: rzg2l: Don't assume all CPG_MOD clocks support PMLad Prabhakar1-15/+24
There are cases where not all CPG_MOD clocks should be assumed to support PM. For example on the CRU block there is a particular sequence that needs to be followed to initialize the CSI-2 D-PHY in which individual clocks need to be turned ON/OFF, due to which Runtime PM support wasn't used by the CRU CSI-2 driver. This patch adds support to allow indicating if PM is not supported by the CPG_MOD clocks. Two new members no_pm_mod_clks and num_no_pm_mod_clks are added to struct rzg2l_cpg_info so that MOD clocks which do not support PM can be passed by no_pm_mod_clks[] array and when the driver uses Runtime PM support the clk ID is matched against the no_pm_mod_clks[] array to see if the clk is needed to be included as part of Runtime PM. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Link: https://lore.kernel.org/r/20221026014227.162121-2-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2022-10-26clk: renesas: rzg2l: Fix typo in struct rzg2l_cpg_priv kerneldocLad Prabhakar1-1/+1
Fix typo pll5_mux_dsi_div_params -> mux_dsi_div_params Fixes the below warning (make W=1): drivers/clk/renesas/rzg2l-cpg.c:115: warning: Function parameter or member 'mux_dsi_div_params' not described in 'rzg2l_cpg_priv' Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Link: https://lore.kernel.org/r/20221026012123.159790-1-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2022-10-17clk: renesas: rzg2l: Fix typo in function nameLad Prabhakar1-3/+3
Fix typo, rzg2l_mod_clock__get_sibling -> rzg2l_mod_clock_get_sibling Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Link: https://lore.kernel.org/r/20220921080051.5604-1-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2022-10-17clk: renesas: rzg2l: Support sd clk mux round operationBiju Das1-1/+1
Currently, determine_rate() is not doing any round operation and due to this it always selects a lower clock source compared to the closest higher one. Support sd clk mux round operation by passing CLK_MUX_ROUND_CLOSEST flag to clk_mux_determine_rate_flags(). Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Link: https://lore.kernel.org/r/20220919084110.3065156-1-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2022-06-07clk: renesas: rzg2l: Fix reset status functionBiju Das1-1/+1
As per RZ/G2L HW(Rev.1.10) manual, reset monitor register value 0 means reset signal is not applied (deassert state) and 1 means reset signal is applied (assert state). reset_control_status() expects a positive value if the reset line is asserted. But rzg2l_cpg_status function returns zero for asserted state. This patch fixes the issue by adding double inverted logic, so that reset_control_status returns a positive value if the reset line is asserted. Fixes: ef3c613ccd68 ("clk: renesas: Add CPG core wrapper for RZ/G2L SoC") Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Link: https://lore.kernel.org/r/20220531071657.104121-1-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2022-05-06clk: renesas: Add RZ/V2M support using the rzg2l driverPhil Edworthy1-0/+6
The Renesas RZ/V2M SoC is very similar to RZ/G2L, though it doesn't have any CLK_MON registers. 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/20220503115557.53370-11-phil.edworthy@renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2022-05-05clk: renesas: rzg2l: Add support for RZ/V2M reset monitor regPhil Edworthy1-1/+9
The RZ/V2M doesn't have a matching set of reset monitor regs for each reset reg like the RZ/G2L. Instead, it has a single CPG_RST_MON reg which has a single bit per module. 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/20220503115557.53370-10-phil.edworthy@renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2022-05-05clk: renesas: rzg2l: Make use of CLK_MON registers optionalPhil Edworthy1-1/+7
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: Add DSI divider clk supportBiju Das1-0/+125
M3 clock is sourced from DSI Divider (DSIDIVA * DSIDIVB) This patch add support for DSI divider clk by combining DSIDIVA and DSIDIVB. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Link: https://lore.kernel.org/r/20220430114156.6260-4-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2022-05-05clk: renesas: rzg2l: Add PLL5_4 clk mux supportBiju Das1-0/+93
Add PLL5_4 clk mux support to select clock from clock sources FOUTPOSTDIV and FOUT1PH0. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Link: https://lore.kernel.org/r/20220430114156.6260-3-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2022-05-05clk: renesas: rzg2l: Add FOUTPOSTDIV clk supportBiju Das1-0/+212
PLL5 generates FOUTPOSTDIV clk and is sourced by LCDC/DSI modules. The FOUTPOSTDIV is connected to PLL5_4 MUX. Video clock is sourced from DSI divider which is connected to PLL5_4 MUX. This patch adds support for generating FOUTPOSTDIV clk. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Link: https://lore.kernel.org/r/20220430114156.6260-2-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 Das1-0/+6
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>
2022-04-13clk: renesas: rzg2l: Simplify multiplication/shift logicGeert Uytterhoeven1-1/+1
"a * (1 << b)" == "a << b". No change in generated code. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/71e1cf2e30fb2d7966fc8ec6bab23eb7e24aa1c4.1645460687.git.geert+renesas@glider.be
2022-04-04clk: renesas: rzg2l: Remove unused notifiersPhil Edworthy1-2/+0
notifiers is not used. Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com> Link: https://lore.kernel.org/r/20220304143241.8523-1-phil.edworthy@renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2022-02-10clk: renesas: rzg2l-cpg: Add support for RZ/V2L SoCBiju Das1-0/+6
The clock structure for RZ/V2L is almost identical to the RZ/G2L SoC. The only difference being that RZ/V2L has additional registers to control clocks and resets for the DRP-AI block. Reuse r9a07g044-cpg.c, as the clock IDs and reset IDs are the same between RZ/G2L and RZ/V2L, and add a separate r9a07g054_cpg_info to take care of the DRP-AI clocks/resets. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Link: https://lore.kernel.org/r/20220205084006.7142-1-biju.das.jz@bp.renesas.com Link: https://lore.kernel.org/r/20220209203411.22332-1-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-11-19clk: renesas: rzg2l: propagate return value of_genpd_add_provider_simple()Lad Prabhakar1-2/+1
of_genpd_add_provider_simple() might fail, this patch makes sure we check the return value of of_genpd_add_provider_simple() by propagating the return value to the caller of rzg2l_cpg_add_clk_domain(). Fixes: ef3c613ccd68a ("clk: renesas: Add CPG core wrapper for RZ/G2L SoC") Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Link: https://lore.kernel.org/r/20211117115101.28281-3-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-11-19clk: renesas: rzg2l: Check return value of pm_genpd_init()Lad Prabhakar1-1/+13
Make sure we check the return value of pm_genpd_init() which might fail. Also add a devres action to remove the power-domain in-case the probe callback fails further down in the code flow. Fixes: ef3c613ccd68a ("clk: renesas: Add CPG core wrapper for RZ/G2L SoC") Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Link: https://lore.kernel.org/r/20211117115101.28281-2-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-11-15clk: renesas: rzg2l: Add missing kerneldoc for resetsGeert Uytterhoeven1-0/+1
make W=1: drivers/clk/renesas/rzg2l-cpg.c:95: warning: Function parameter or member 'num_resets' not described in 'rzg2l_cpg_priv' Add the missing kerneldoc for fields in struct rzg2l_cpg_priv and struct rzg2l_cpg_info related to Module Resets. Fixes: c3e67ad6f5a2c698 ("dt-bindings: clock: r9a07g044-cpg: Update clock/reset definitions") Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Link: https://lore.kernel.org/r/39c2c5fd4232b6620a4a56dba4e2b0d61476ee36.1634646869.git.geert+renesas@glider.be
2021-10-08clk: renesas: rzg2l: Add SDHI clk mux supportBiju Das1-0/+118
Add SDHI clk mux support to select SDHI clock from different clock sources. As per HW manual, direct clock switching from 533MHz to 400MHz and vice versa is not recommended. So added support for handling this in 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/20211007111434.8665-2-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-09-24clk: renesas: rzg2l: Add support to handle coupled clocksBiju Das1-0/+71
The AXI and CHI clocks use the same register bit for controlling clock output. Add a new clock type for coupled clocks, which sets the CPG_CLKON_ETH.CLK[01]_ON bit when at least one clock is enabled, and clears the bit only when both clocks are disabled. 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/20210922155145.28156-4-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-09-24clk: renesas: rzg2l: Add support to handle MUX clocksBiju Das1-0/+23
Add support to handle mux clocks in order to select a clock source from multiple sources. 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/20210922155145.28156-2-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-09-24clk: renesas: rzg2l: Fix clk status functionBiju Das1-1/+1
As per RZ/G2L HW(Rev.0.50) manual, clock monitor register value 0 means clock is not supplied and 1 means clock is supplied. This patch fixes the issue by removing the inverted logic. Fixing the above, triggered following 2 issues 1) GIC interrupts don't work if we disable IA55_CLK and DMAC_ACLK. Fixed this issue by adding these clocks as critical clocks. 2) DMA is not working, since the DMA driver is not turning on DMAC_PCLK. So will provide a fix in the DMA driver to turn on DMA_PCLK. Fixes: ef3c613ccd68 ("clk: renesas: Add CPG core wrapper for RZ/G2L SoC") Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Link: https://lore.kernel.org/r/20210922112405.26413-2-biju.das.jz@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 Uytterhoeven1-0/+750
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
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