From nobody Fri Dec 19 16:08:56 2025 Received: from m16.mail.163.com (m16.mail.163.com [117.135.210.3]) by smtp.subspace.kernel.org (Postfix) with ESMTP id C63F528C5CA; Mon, 19 May 2025 16:05:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=117.135.210.3 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747670736; cv=none; b=ZueXbzwGtHbrxycSGhCja5EUFqnwvwK485KEFJUL/y7emJvtGF+XsMSj/TjeZGoTaX8bedRkHFGm/RwgDsaD6sOX8l+liy7glF1lGqvJG5HXOJV0otscuKbToWXXvhah21mLmOFcL8sb0XlSyproUePvOoSnX6FUcfMqkTk+iyY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747670736; c=relaxed/simple; bh=UamZjfyN6na3p67Dkavvu/KY840DiztSpAhsgs34BpE=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=p/in6YiAkIZk+c2pP6yOhzgjbKpOPn88CotD6uCAZZbxozknTqJC7uVF7DpPrLXD4C2XGXYReiIrxLdM/rxdPxZ1Q0bWurnKkE8OX+fW3yGpMmcU+307udqJ0zw2CCOrTcUJCcuUMhBs7fgcupr7xP010LZFsaThSwmPwchi4tk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com; spf=pass smtp.mailfrom=163.com; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b=XH/baRnp; arc=none smtp.client-ip=117.135.210.3 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=163.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b="XH/baRnp" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=ij u8xELG4+fnR3215qcICf+KmnT2kIbCVpbjooreXLw=; b=XH/baRnpZkoCFnUWlI 8PdkaQFL2V/4NL010Kv9mP+kS7L9tWiD9zon/IGFbi2vFhromKdjzouFPXBemLel 6fbPRXYIQjeqk79VmduLST9cOJzdtEaO2yDwYTX7iFD+Ay+S2STALDoC1QQLSOw6 4c02GN5P1jtwdXWGlpED4V3ms= Received: from localhost.localdomain (unknown []) by gzga-smtp-mtada-g1-2 (Coremail) with SMTP id _____wDHWSeiVitokozvCQ--.46206S5; Tue, 20 May 2025 00:04:53 +0800 (CST) From: Hans Zhang <18255117159@163.com> To: bhelgaas@google.com, lpieralisi@kernel.org, kw@linux.com, krzk+dt@kernel.org, manivannan.sadhasivam@linaro.org, conor+dt@kernel.org Cc: robh@kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Hans Zhang <18255117159@163.com> Subject: [PATCH 3/3] PCI: of: Relax max-link-speed check to support PCIe Gen5/Gen6 Date: Tue, 20 May 2025 00:04:48 +0800 Message-Id: <20250519160448.209461-4-18255117159@163.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250519160448.209461-1-18255117159@163.com> References: <20250519160448.209461-1-18255117159@163.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 X-CM-TRANSID: _____wDHWSeiVitokozvCQ--.46206S5 X-Coremail-Antispam: 1Uf129KBjvdXoWrtw43uFWDZw4fKFyUGrWDXFb_yoWfAwbE9F 17XrWfGr4Fkry5Gw1YyrWavrn0v34rW3WUXFyFy3WfAa4UuFyDZFnxuF45Za93A3W3JF1U GFyDGr1UKr1DKjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUvcSsGvfC2KfnxnUUI43ZEXa7xRifOzJUUUUU== X-CM-SenderInfo: rpryjkyvrrlimvzbiqqrwthudrp/1tbiOhhSo2grT8qeFwAAsc Content-Type: text/plain; charset="utf-8" The existing code restricted `max-link-speed` to values 1~4 (Gen1~Gen4), but current SOCs using Synopsys/Cadence IP may require Gen5/Gen6 support. This patch updates the validation in `of_pci_get_max_link_speed` to allow values up to 6, ensuring compatibility with newer PCIe generations. Signed-off-by: Hans Zhang <18255117159@163.com> --- drivers/pci/of.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pci/of.c b/drivers/pci/of.c index ab7a8252bf41..379d90913937 100644 --- a/drivers/pci/of.c +++ b/drivers/pci/of.c @@ -890,7 +890,7 @@ int of_pci_get_max_link_speed(struct device_node *node) u32 max_link_speed; =20 if (of_property_read_u32(node, "max-link-speed", &max_link_speed) || - max_link_speed =3D=3D 0 || max_link_speed > 4) + max_link_speed =3D=3D 0 || max_link_speed > 6) return -EINVAL; =20 return max_link_speed; --=20 2.25.1