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[73.183.52.120]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-8d9f122b21bsm43742846d6.4.2026.06.16.14.10.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 16 Jun 2026 14:10:24 -0700 (PDT) From: Brian Masney Date: Tue, 16 Jun 2026 17:09:43 -0400 Subject: [PATCH v2 1/5] clk: introduce stub clk_sync_state() Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260616-clk-sync-state-v2-1-15f82c64d95c@redhat.com> References: <20260616-clk-sync-state-v2-0-15f82c64d95c@redhat.com> In-Reply-To: <20260616-clk-sync-state-v2-0-15f82c64d95c@redhat.com> To: Saravana Kannan , Abel Vesa , Maxime Ripard , Michael Turquette , Stephen Boyd , Russell King , Bjorn Andersson , Hans de Goede , Konrad Dybcio , Dmitry Baryshkov Cc: linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Brian Masney , Jens Glathe X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=2048; i=bmasney@redhat.com; s=20250903; h=from:subject:message-id; bh=taSF5g+TYPmZ3BTF82P0LBh5qfQ8aapUDFKnR5l8sjU=; b=owGbwMvMwCW2/dJd9di6A+2Mp9WSGLIMd+8oi127i4G5q8JJdLql2Mb1M0U+imx9ZKbgN+ev/ stkD4ZdHaUsDGJcDLJiiixLco0KIlJX2d67o8kCM4eVCWQIAxenAEzkkirD/+CHOq9iVxy0qnnf 22hUzjTBY9aZx4/fVTF9jlc6pHHqCD/DL+ZuwVX/ni0OZvKsz8h4mfeu0y5/cVLB2y6mNQeva6R N4AUA X-Developer-Key: i=bmasney@redhat.com; a=openpgp; fpr=A46D32705865AA3DDEDC2904B7D2DD275D7EC087 Add a stub clk_sync_state() since this will be needed for some clk drivers that already have a sync_state callback. This allows introducing all of the necessary changes into the drivers before actually adding the real clk_sync_state() implementation. Doing it this way ensures that the tree stays bisectable, and the individual changes are small patches. Tested-by: Jens Glathe Signed-off-by: Brian Masney --- drivers/clk/clk.c | 6 ++++++ include/linux/clk.h | 14 ++++++++++++++ 2 files changed, 20 insertions(+) diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c index 048adfa86a5d..9cb2b42d1be4 100644 --- a/drivers/clk/clk.c +++ b/drivers/clk/clk.c @@ -1557,6 +1557,12 @@ static int __init clk_disable_unused(void) } late_initcall_sync(clk_disable_unused); +void clk_sync_state(struct device *dev) +{ + /* Will fill in */ +} +EXPORT_SYMBOL_GPL(clk_sync_state); + static int clk_core_determine_round_nolock(struct clk_core *core, struct clk_rate_request *req) { diff --git a/include/linux/clk.h b/include/linux/clk.h index 998ba3f261da..31a0c9224c46 100644 --- a/include/linux/clk.h +++ b/include/linux/clk.h @@ -846,6 +846,20 @@ void devm_clk_put(struct device *dev, struct clk *clk); */ +/* + * clk_sync_state - sync_state callback to disable unused clocks + * @dev: the clock provider device whose unused clocks should be disabled + * + * It is called by the driver core once all consumers of @dev have probed, + * and disables any clocks belonging to @dev that are unused at that point. + * + * If a clock provider doesn't have a sync_state callback, then the framework + * will set up clk_sync_state() on your drivers behalf. If your driver needs + * a sync_state callback, then that callback also needs to call + * clk_sync_state(). + */ +void clk_sync_state(struct device *dev); + /** * clk_round_rate - adjust a rate to the exact rate a clock can provide * @clk: clock source -- 2.54.0