From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Tue, 04 Jul 2023 11:11:51 +0200 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1qGc4e-00EamI-V0 for lore@lore.pengutronix.de; Tue, 04 Jul 2023 11:11:51 +0200 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1qGc4c-0003gU-DC for lore@pengutronix.de; Tue, 04 Jul 2023 11:11:50 +0200 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:From:In-Reply-To: Content-Type:MIME-Version:References:Message-ID:Subject:Cc:To:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=S97+jt7tbJQx/ngKf3Ub8mI3lY6VWBRUA+9drNJsorE=; b=slgyu7lF1ruw1frYmBYn9oDxfH bNWsDhTrzecNCBgDhG8d7C6qLsj5vClnrydboWauYyolTuM2a1C2ENC2fxI1dRo/d0tC06YfdXuVS F63Rwk3e7o/8jEmCrpoLf+zbww9flIXzWnJVzhn6fwgiS4/SPFSqjLbPnkngh/g6PvBj3XGbEZOCp haGg/t0oVbfCdKBvTUE79lKSxtvafuRfTwfxgiMnLV9PYXtOsB25a5frfU76AhQsVfOTLOsLms/IT ByGxACvG0e0CZkoRAgRzR22lw7z8rwxDxYV+z/s0UP5XBkMbJtebgswJDyTxOcbWSl7Dl36SHfBu2 x+2G3lAQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qGc3V-00CfkI-07; Tue, 04 Jul 2023 09:10:41 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qGc3S-00CfjU-0m for barebox@lists.infradead.org; Tue, 04 Jul 2023 09:10:39 +0000 Received: from ptx.hi.pengutronix.de ([2001:67c:670:100:1d::c0]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1qGc3P-0003Rp-OP; Tue, 04 Jul 2023 11:10:35 +0200 Received: from sha by ptx.hi.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1qGc3P-0007wh-EO; Tue, 04 Jul 2023 11:10:35 +0200 Date: Tue, 4 Jul 2023 11:10:35 +0200 To: Steffen Trumtrar Cc: barebox@lists.infradead.org, Assmann Kai Message-ID: <20230704091035.GZ18491@pengutronix.de> References: <20230626103756.983193-1-s.trumtrar@pengutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230626103756.983193-1-s.trumtrar@pengutronix.de> X-Sent-From: Pengutronix Hildesheim X-URL: http://www.pengutronix.de/ X-Accept-Language: de,en X-Accept-Content-Type: text/plain User-Agent: Mutt/1.10.1 (2018-07-13) From: Sascha Hauer X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230704_021038_285460_6DEDD9D9 X-CRM114-Status: GOOD ( 28.32 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.ext.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-4.8 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE, T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: Re: [PATCH] ARM: zynq: get ps_clk_rate from dt X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.ext.pengutronix.de) On Mon, Jun 26, 2023 at 12:37:46PM +0200, Steffen Trumtrar wrote: > From: "Assmann Kai (BEG/EMS1)" > > This adds a barebox-specific binding to overwrite the PS clock > frequency. > > Currently the ps_clk_rate is locked to 33.3MHz. Introduce a devicetree > property "ps-clock-frequency" that specifies this clock. > > If the property is found, overwrite ps_clk_rate otherwise stay at the > default 33.3MHz > > Signed-off-by: Assmann Kai (BEG/MSD-NE2) > Signed-off-by: Steffen Trumtrar > --- Applied, thanks Sascha > > Notes: > changes since v1: > - reword commit message > - add binding rst > - change type of ps_clk_frequency > > .../devicetree/bindings/clocks/xlnx,ps7-clkc.rst | 10 ++++++++++ > drivers/clk/zynq/clkc.c | 4 +++- > 2 files changed, 13 insertions(+), 1 deletion(-) > create mode 100644 Documentation/devicetree/bindings/clocks/xlnx,ps7-clkc.rst > > diff --git a/Documentation/devicetree/bindings/clocks/xlnx,ps7-clkc.rst b/Documentation/devicetree/bindings/clocks/xlnx,ps7-clkc.rst > new file mode 100644 > index 0000000000..523b0cf56e > --- /dev/null > +++ b/Documentation/devicetree/bindings/clocks/xlnx,ps7-clkc.rst > @@ -0,0 +1,10 @@ > +Xilinx PS7 clkc > +=============== > + > +In addition to the upstream bindings, following properties are understood: > + > +Optional properties: > + > +- ``ps-clock-frequency`` : Overrides the ps clock frequency set by the driver. > + Per default the clock is set to 33.3MHz. When this property is set, the frequency > + is overwritten by the devicetree property. > diff --git a/drivers/clk/zynq/clkc.c b/drivers/clk/zynq/clkc.c > index 1219e25f7a..d6de583e32 100644 > --- a/drivers/clk/zynq/clkc.c > +++ b/drivers/clk/zynq/clkc.c > @@ -368,7 +368,7 @@ static int zynq_clock_probe(struct device *dev) > { > struct resource *iores; > void __iomem *clk_base; > - unsigned long ps_clk_rate = 33333330; > + u32 ps_clk_rate = 33333330; > resource_size_t slcr_offset = 0; > > iores = dev_get_resource(dev, IORESOURCE_MEM, 0); > @@ -390,6 +390,8 @@ static int zynq_clock_probe(struct device *dev) > slcr_offset = parent_res->start; > } > > + of_property_read_u32(dev->device_node, "ps-clk-frequency", &ps_clk_rate); > + > iores = request_iomem_region(dev_name(dev), iores->start + slcr_offset, > iores->end + slcr_offset); > if (IS_ERR(iores)) > -- > 2.41.0 > > > -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |