From mboxrd@z Thu Jan 1 00:00:00 1970 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 92616C88E6E for ; Mon, 14 Sep 2026 15:46:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:From:References:Cc:To: Subject:MIME-Version:Date:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=RqZwjfUWyUQU9D9OM+xU98RL85hsZ533Iopla7PzYTs=; b=FwJuNZHgXJWAmH H40dqH0TSJmbwB4fsevbiRV4ZRstL3V9WIeesSMwQzWGc2BQgIDTUgC6iiIJSbaoVflVItZVSfQFy Qz1BIRbAF17mDSwtylyMOCXZdtlLZZr555WgGEelxV0Lgo11KV/JnQbdqSTju2snhlqJ/U2aoJCz8 ldI8NM+TBuVwizi8sjBrgmyQbqZTGbPEh3elvYQbC+IbOTCr64MhYOgjgNyioeQyBR6ah9IZjGge2 zgH3iBwcLMOhVbiPBetN30vqFrdhynRrHl4sd8OLI5q1V7Hgl5r1/LtzMXFUu5UTFeuSQ8PKx7DwP caXtl2KPIgwtJCFu81Qg==; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org On 14/09/2026 15:14, Valerio Setti wrote: > Thanks for your review and feedbacks. > > > On 9/13/26 11:41 AM, Krzysztof Kozlowski wrote: >> On Sat, Sep 12, 2026 at 12:14:32AM +0200, Valerio Setti wrote: >>> +static int meson_gx_audin_probe(struct platform_device *pdev) >>> +{ >>> + struct device *dev = &pdev->dev; >>> + struct resource *res; >>> + void __iomem *mmio; >>> + struct regmap *regmap; >>> + struct clk *clk; >>> + int ret; >>> + >>> + ret = device_reset(dev); >>> + if (ret) >>> + return dev_err_probe(dev, ret, "Failed to reset device\n"); >>> + >>> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); >>> + if (!res) >>> + return dev_err_probe(dev, -EINVAL, "Failed to get memory resource\n"); >>> + >>> + /* >>> + * Do not use devm_platform_ioremap_resource() here: it would claim the >>> + * whole AUDIN window exclusively and the FIFO children would then fail >>> + * to request their own sub-ranges. >>> + */ >> >> And this should point you that child is not a separate device. >> >> Please open your datasheet and read what is the address space of this >> device. You claim here ENTIRE address space. If you insist that entire >> address space is not owned by this device, then you misrepresented >> hardware in the DT anyway. > > As I mentioned in the cover letter I designed it this way so that I > could easily re-use the same driver code for all 3 FIFOs just offsetting > the base address. I knew it was a bit hackish a solution, but IMO that > was worth it since it was simplifying a bit driver's code. Perhaps it > was more software-oriented rather than hardware related. > The other possible approach is to fully copy what AIU is doing and > allocate each FIFO as a DAI. I'll follow that design then, but if you > have any better idea please let me know. Do not design hardware description - so DTS - to facilitate your driver design. Specifically requested by writing bindings. Best regards, Krzysztof _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic