From: Pavel Machek <pavel@denx.de>
To: Claudiu <claudiu.beznea@tuxon.dev>
Cc: nobuhiro1.iwamatsu@toshiba.co.jp, cip-dev@lists.cip-project.org
Subject: Re: [PATCH 5.10.y-cip 00/22] RZ/{G2L, G2LC, G2UL, G3S, Five, V2L}: Backport MSTOP support
Date: Fri, 28 Nov 2025 13:02:15 +0100 [thread overview]
Message-ID: <aSmPR2lrojvlkjpW@duo.ucw.cz> (raw)
In-Reply-To: <20251106081218.2574950-1-claudiu.beznea.uj@bp.renesas.com>
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Hi!
> Series backports the MSTOP (Module Stop) support for the Renesas
> RZ/G2L, RZ/G2LC, RZ/G2UL, RZ/G3S, RZ/Five, RZ/V2L SoCs.
>
> The purpose of MSTOP is to reduce power consumption by stopping
> unnecessary module's functions.
>
> If any master accesses a module that has the clock stopped and the
> MSTOP bit set, a bus error will occur.
>
> Due to this, to avoid CPU generating synchronous aborts, changes
> to PM domain specific code were needed. The changes backported in
> this series were adjusted to be executed only for the above
> mentioned Renesas SoCs.
>
> Please share your thoughts on this approach.
Ok, so after IRC meeting, I went through the patches again, but I
guess I'll need some more help.
03/22] PM: domains: Add helper to check for PM domain detach on unbind
This one is not mainline, and is only non-mainline patch around,
correct?
05/22] driver core: platform: Drop dev_pm_domain_detach() call
06/22] mmc: sdio: Drop dev_pm_domain_detach() call
07/22] spi: Drop dev_pm_domain_detach() call
08/22] rpmsg: core: Drop dev_pm_domain_detach() call
09/22] soundwire: bus: Drop dev_pm_domain_detach() call
10/22] serdev: Drop dev_pm_domain_detach() call
11/22] i2c: core: Drop dev_pm_domain_detach() call
These are good cleanups, but are they neccessary for your goals? (Are
you using rpmsg?) Could we get rid of some or all of these?
22/22] clk: renesas: r9a07g04[34]: Use tabs instead of spaces
This one is certainly not neccessary.
Thanks and best regards,
Pavel
--
In cooperation with DENX Software Engineering GmbH, HRB 165235 Munich,
Office: Kirchenstr.5, D-82194 Groebenzell, Germany
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next prev parent reply other threads:[~2025-11-28 12:02 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-06 8:11 [PATCH 5.10.y-cip 00/22] RZ/{G2L, G2LC, G2UL, G3S, Five, V2L}: Backport MSTOP support Claudiu
2025-11-06 8:11 ` [PATCH 5.10.y-cip 01/22] PM: domains: Add flags to specify power on attach/detach Claudiu
2025-11-06 8:11 ` [PATCH 5.10.y-cip 02/22] of: Add of_machine_compatible_match() Claudiu
2025-11-06 8:11 ` [PATCH 5.10.y-cip 03/22] PM: domains: Add helper to check for PM domain detach on unbind cleanup Claudiu
2025-11-06 8:12 ` [PATCH 5.10.y-cip 04/22] PM: domains: Detach on device_unbind_cleanup() Claudiu
2025-11-06 8:12 ` [PATCH 5.10.y-cip 05/22] driver core: platform: Drop dev_pm_domain_detach() call Claudiu
2025-11-06 8:12 ` [PATCH 5.10.y-cip 06/22] mmc: sdio: " Claudiu
2025-11-06 8:12 ` [PATCH 5.10.y-cip 07/22] spi: " Claudiu
2025-11-06 8:12 ` [PATCH 5.10.y-cip 08/22] rpmsg: core: " Claudiu
2025-11-06 8:12 ` [PATCH 5.10.y-cip 09/22] soundwire: bus: " Claudiu
2025-11-06 8:12 ` [PATCH 5.10.y-cip 10/22] serdev: " Claudiu
2025-11-06 8:12 ` [PATCH 5.10.y-cip 11/22] i2c: core: " Claudiu
2025-11-06 8:12 ` [PATCH 5.10.y-cip 12/22] clk: renesas: rzg2l: Extend power domain support Claudiu
2025-11-06 8:12 ` [PATCH 5.10.y-cip 13/22] clk: renesas: rzg2l: Postpone updating priv->clks[] Claudiu
2025-11-06 8:12 ` [PATCH 5.10.y-cip 14/22] clk: renesas: rzg2l: Move pointers after hw member Claudiu
2025-11-06 8:12 ` [PATCH 5.10.y-cip 15/22] clk: renesas: rzg2l: Add macro to loop through module clocks Claudiu
2025-11-06 8:12 ` [PATCH 5.10.y-cip 16/22] clk: renesas: rzg2l: Add support for MSTOP in clock enable/disable API Claudiu
2025-11-06 8:12 ` [PATCH 5.10.y-cip 17/22] clk: renesas: r9a08g045: Drop power domain instantiation Claudiu
2025-11-06 8:12 ` [PATCH 5.10.y-cip 18/22] clk: renesas: r9a08g045: Add MSTOP for coupled clocks as well Claudiu
2025-11-06 8:12 ` [PATCH 5.10.y-cip 19/22] clk: renesas: r9a08g045: Add MSTOP for GPIO Claudiu
2025-11-06 8:12 ` [PATCH 5.10.y-cip 20/22] clk: renesas: r9a07g044: Add MSTOP for RZ/G2L Claudiu
2025-11-06 8:12 ` [PATCH 5.10.y-cip 21/22] clk: renesas: r9a07g043: Add MSTOP for RZ/G2UL Claudiu
2025-11-06 8:12 ` [PATCH 5.10.y-cip 22/22] clk: renesas: r9a07g04[34]: Use tabs instead of spaces Claudiu
2025-11-06 19:23 ` [PATCH 5.10.y-cip 00/22] RZ/{G2L, G2LC, G2UL, G3S, Five, V2L}: Backport MSTOP support Pavel Machek
2025-11-07 10:06 ` Claudiu Beznea
[not found] ` <1875B18477989308.416970@lists.cip-project.org>
2025-11-11 8:47 ` [cip-dev] " Claudiu Beznea
2025-11-21 12:47 ` Claudiu Beznea
2025-11-21 12:50 ` [PATCH] drm: renesas: Open/close devres_group on probe/remove Claudiu
2025-11-21 13:43 ` [cip-dev] [PATCH 5.10.y-cip 00/22] RZ/{G2L, G2LC, G2UL, G3S, Five, V2L}: Backport MSTOP support Pavel Machek
2025-11-21 13:55 ` Claudiu Beznea
2025-11-23 9:15 ` Biju Das
2025-11-24 8:03 ` Claudiu Beznea
2025-11-24 10:10 ` Pavel Machek
2025-11-24 13:21 ` Claudiu Beznea
2025-11-28 12:02 ` Pavel Machek [this message]
2025-11-28 14:54 ` Claudiu Beznea
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