From nobody Tue Feb 10 03:36:58 2026 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 919916F085; Mon, 25 Mar 2024 21:00:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711400459; cv=none; b=nAeoFjgG8YSl62mWnv+vZ4gReJUyHQ0S+Tt2rrhGLXp0CD+yXmgToTtLee2E6sUSNWmyxgr8aQKSVeS5WC9MD3yqtg6bmJmGF9H/SteVkqVDB1HFyDRlhjDP0fIcuHSbo1IRIJkWycpbmJiarqPcl/nZC3Z675b0wiQLmZh6eTI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711400459; c=relaxed/simple; bh=4SiRoeD6bB8DFgQrOsAZsx4BXqwPKBOWJLo8r/Mu7Y4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=nPBifP2YAf9JHdn9gPNEL1PizsC7n8prGpvG/kyJNi48j6jlZ1cFsyE1yZ5aAV15FRqY/e+vx41eQ1FH6BY74V5feXAMU2WDd0neMMoMrmiom55pwCHfMHXdFzBcYdPj/RbeZaBmixz+DXoTaQs7NSfWcvzc98pgiqCkVeddP/E= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 9D8D21595; Mon, 25 Mar 2024 14:01:31 -0700 (PDT) Received: from pluto.fritz.box (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 003D53F694; Mon, 25 Mar 2024 14:00:55 -0700 (PDT) From: Cristian Marussi To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org Cc: sudeep.holla@arm.com, james.quinlan@broadcom.com, f.fainelli@gmail.com, vincent.guittot@linaro.org, peng.fan@oss.nxp.com, michal.simek@amd.com, quic_sibis@quicinc.com, quic_nkela@quicinc.com, souvik.chakravarty@arm.com, mturquette@baylibre.com, sboyd@kernel.org, Cristian Marussi Subject: [PATCH v2 4/5] clk: scmi: Add support for re-parenting restricted clocks Date: Mon, 25 Mar 2024 21:00:24 +0000 Message-ID: <20240325210025.1448717-5-cristian.marussi@arm.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240325210025.1448717-1-cristian.marussi@arm.com> References: <20240325210025.1448717-1-cristian.marussi@arm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Some exposed SCMI Clocks could be marked as non-supporting re-parenting changes. Configure a clk_ops descriptor which does not provide the re-parenting callbacks for such clocks when registering with CLK framework. CC: Michael Turquette CC: Stephen Boyd CC: linux-clk@vger.kernel.org Signed-off-by: Cristian Marussi Reviewed-by: Florian Fainelli --- drivers/clk/clk-scmi.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/clk/clk-scmi.c b/drivers/clk/clk-scmi.c index d20dcc60f9d1..87e968b6c095 100644 --- a/drivers/clk/clk-scmi.c +++ b/drivers/clk/clk-scmi.c @@ -20,6 +20,7 @@ enum scmi_clk_feats { SCMI_CLK_ATOMIC_SUPPORTED, SCMI_CLK_STATE_CTRL_FORBIDDEN, SCMI_CLK_RATE_CTRL_FORBIDDEN, + SCMI_CLK_PARENT_CTRL_FORBIDDEN, SCMI_CLK_MAX_FEATS }; =20 @@ -254,7 +255,8 @@ scmi_clk_ops_alloc(struct device *dev, unsigned long fe= ats_key) =20 /* Parent ops */ ops->get_parent =3D scmi_clk_get_parent; - ops->set_parent =3D scmi_clk_set_parent; + if (!(feats_key & BIT(SCMI_CLK_PARENT_CTRL_FORBIDDEN))) + ops->set_parent =3D scmi_clk_set_parent; =20 return ops; } @@ -301,6 +303,9 @@ scmi_clk_ops_select(struct scmi_clk *sclk, bool atomic_= capable, if (ci->rate_ctrl_forbidden) feats_key |=3D BIT(SCMI_CLK_RATE_CTRL_FORBIDDEN); =20 + if (ci->parent_ctrl_forbidden) + feats_key |=3D BIT(SCMI_CLK_PARENT_CTRL_FORBIDDEN); + /* Lookup previously allocated ops */ ops =3D clk_ops_db[feats_key]; if (!ops) { --=20 2.44.0