From patchwork Mon Sep 30 09:30:56 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Wahren X-Patchwork-Id: 13815800 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 08E67CF64A0 for ; Mon, 30 Sep 2024 10:04:06 +0000 (UTC) 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:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=sY+L5lzlsetMV2bHl+NCJRDblGupsZADF4yHxFO+I+k=; b=qPTQ/1j8OLXvSS+xp/tLk6W/gZ XPjjLh2zRsGv3FHlpiNdpusXV9jgNa7ilZY5A3keO76/rKvcEZmsS74dpmKjH2Dy29eCdXiDicAET XJK37DMLZ0+eNqExi4bb2RLOVxupiWW+ILxkrxcBIFo4BmU1FreJnxnMG29mXV+jyRzRzGEAymh02 egxBLh+I5zG2qNe1pRhA3FJDPRB7c3Wk+C4zOYlTPvZNJ/NoMEbkae4ufHXI396c1K2BynS7uzyD5 SMMoRGER5knOC/4k/KcGmYMHl4cIaH5rgaTvWu6saAlf5c7lBLXzyWelgdpQstEYTcQ5UvEY4Kr1A M5+mnkkw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1svDFt-0000000Gci2-2HhA; Mon, 30 Sep 2024 10:03:49 +0000 Received: from mout.gmx.net ([212.227.15.19]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1svCkI-0000000GXBD-3SSr for linux-arm-kernel@lists.infradead.org; Mon, 30 Sep 2024 09:31:13 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmx.net; s=s31663417; t=1727688660; x=1728293460; i=wahrenst@gmx.net; bh=sY+L5lzlsetMV2bHl+NCJRDblGupsZADF4yHxFO+I+k=; h=X-UI-Sender-Class:From:To:Cc:Subject:Date:Message-Id:In-Reply-To: References:MIME-Version:Content-Transfer-Encoding:cc: content-transfer-encoding:content-type:date:from:message-id: mime-version:reply-to:subject:to; b=oVdY7dwc9BLzk7RYbS36Vf+WD3fXEDR3XJNzqjkgPUtruZVRD0H0v6WK+vphbbAR GY4rjbChmACypZ2cvS7mSLUtsD0SCQDtcEf0/+oKZAW9jQNc3RLp/BrqPsIRN3zAG b33AvdkCSfE6C0ozw9/OiqCDRtRArZDRjhFocoNO/Om8K6aYKJy7UsfS0cPxf7/iU hFR01mD+ozQxjHlHp/mmWl+cvUvGVskNpiM5kHJ79WHV0DUuc3OIZhdApWR+yWpVn 804GtwmgHNTRYdiA11PR1gdNOUH6npzns6abdYFRag6ayWivVjbOtFzZETZ+inps8 d0c/XQRCjE6KRbEb5g== X-UI-Sender-Class: 724b4f7f-cbec-4199-ad4e-598c01a50d3a Received: from stefanw-SCHENKER ([37.4.248.43]) by mail.gmx.net (mrgmx005 [212.227.17.190]) with ESMTPSA (Nemesis) id 1N2E1M-1rtyeY2v8g-017OVO; Mon, 30 Sep 2024 11:31:00 +0200 From: Stefan Wahren To: Mark Brown , Carlos Song , Frank Li , Fabio Estevam , Shawn Guo Cc: linux-arm-kernel@lists.infradead.org, linux-spi@vger.kernel.org, "imx @ lists . linux . dev" , Pengutronix Kernel Team , Stefan Wahren Subject: [PATCH 3/3] spi: spi-fsl-lpspi: support effective_speed_hz Date: Mon, 30 Sep 2024 11:30:56 +0200 Message-Id: <20240930093056.93418-4-wahrenst@gmx.net> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240930093056.93418-1-wahrenst@gmx.net> References: <20240930093056.93418-1-wahrenst@gmx.net> MIME-Version: 1.0 X-Provags-ID: V03:K1:FGHoyPznj8FacNxU9Nu//r0ysWw9iHPsxi0c3fBlj0Cz9lMJNh+ PYX5XAYLoSsKGGlI78Q3llcgWUBWIsDOfEVF7KNQ2/0BrsUD2KxabzALkj2gafXB4qFbdRH N/MfD9trPE04d5t0918vJU6STOvNbzVMcMcNLzDQQ+h4/XEF4twWMkTO8QnaAm5IYDdgNLZ Ii4jrq8rLjaAKebngs6WA== UI-OutboundReport: notjunk:1;M01:P0:MV8S/9v7k0k=;0bCwECx6vZKE15FgPUKn8Y/HMqw tWsMTaIKHY3bOxjsHcmzDDvI/qsJTqinUB+bnRXr1xk55/LlTr9SfpH4UF32yjEFPJIlFtpq5 5aNKG0mhtKpudyXPVqISpjRHpP8cPo0KV0gk/oPWgURNdkV1l9ZDw9Z9W5DGqtFepxJIOcXqv /KfGhKWj2aL6e+4ZRlg2C+iJhM+3iEgCIp3wiOjZnXqbnIAP1vNNXx8ZWvlnwkjUisf4kgA+g LTPBag83S6Ng35/eHjH4u3Ew6D8lrH8FspobOevgE89dnq+CNHbV6MV5vXdvTmtBWH1yGSC2s B7oS1GgdVMlb38/KAB8BaNC30ppFyD51+P+OY+8f74EqZmS6fI6zIsY982kUpGXjpCLWQt1qB R4Y3rQFXqenT9iQnM2Sfz+eva08wE6XMeF4uT/5AQtOjhdY++3IjBZeI/5titnDfe6mARUG8o m5F/KTZhXGfkhnQqi0Le9W4D6ULsZixPCa3NOSsSYAlGZEtOfFz8XiejoWE/REbNsFoBvEhta RAMRhN9C0GaMxdpLOXYrwKs5VrEeGDKA4ZtOJMuOdOVYQrEOds7tmqZkBrEaEgw96cG9gx45D TsJADn1abZRFSWfyaqp3IW4MfKiO5F6EymRj9tfhH3P4RbOKE1w2QBEzpNFMiBc8wELmyUdWb uPyZFU2O6gUqLMhNONa5jeugCF/ZhZm7+qyff8AqWCKCvanSfmBhmWoiEpqmko3rkRZFqw3Q3 QzzyoPq8j7abWKn4kH2fDw/ZWEcb3vN5fjMlChfzuRlTQzcbkjZC+W2h+aJgbTHPdHYEREKYC ulJbxMk8eyGNeqTD1BrzwHLA== X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240930_023111_169128_CD7AC1EB X-CRM114-Status: GOOD ( 10.08 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Setting spi_transfer->effective_speed_hz in transfer_one so that SPI client driver can use it. Signed-off-by: Stefan Wahren Reviewed-by: Frank Li --- drivers/spi/spi-fsl-lpspi.c | 6 ++++++ 1 file changed, 6 insertions(+) -- 2.34.1 diff --git a/drivers/spi/spi-fsl-lpspi.c b/drivers/spi/spi-fsl-lpspi.c index 3b5aa91079ae..5d55ef4d4ba6 100644 --- a/drivers/spi/spi-fsl-lpspi.c +++ b/drivers/spi/spi-fsl-lpspi.c @@ -92,6 +92,7 @@ struct lpspi_config { u8 prescale; u16 mode; u32 speed_hz; + u32 effective_speed_hz; }; struct fsl_lpspi_data { @@ -351,6 +352,9 @@ static int fsl_lpspi_set_bitrate(struct fsl_lpspi_data *fsl_lpspi) writel(scldiv | (scldiv << 8) | ((scldiv >> 1) << 16), fsl_lpspi->base + IMX7ULP_CCR); + fsl_lpspi->config.effective_speed_hz = perclk_rate / (scldiv + 2) * + (1 << prescale); + dev_dbg(fsl_lpspi->dev, "perclk=%u, speed=%u, prescale=%u, scldiv=%d\n", perclk_rate, config.speed_hz, prescale, scldiv); @@ -750,6 +754,8 @@ static int fsl_lpspi_transfer_one(struct spi_controller *controller, if (ret < 0) return ret; + t->effective_speed_hz = fsl_lpspi->config.effective_speed_hz; + fsl_lpspi_set_cmd(fsl_lpspi); fsl_lpspi->is_first_byte = false;