From patchwork Thu Nov 7 13:50:53 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "lorenzo@kernel.org" X-Patchwork-Id: 13866541 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 1B4CDD43360 for ; Thu, 7 Nov 2024 13:56:46 +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:Cc:To:In-Reply-To:References :Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=01nEnPrHr/KB6tX2/rLObtEkZwgoa/NK4Y4p1QWGNTc=; b=Hgl0Uz8Yh29qc6SNkcDjm0uYKg EzvxlpNfBO+Y2TJSb4/NEx3uIN6VlLXo+VhnI1yXDxU1sWcLBM0jddC6PcO/tMhKOvEl6DppGaUN3 l+mQF5vYpVkziPe67vgX+HwfDL7G2oxWr9lKD37moYtiScK9dkv8KktmjwAZ3zbTg15pdZyQZMt/x LCUCXZpXqN8Kvda3DTzuykOtPadrGnzdCHy3e8Sd+qcCqBhJud/s9DpeIN7fdGsH1Cv2YXFPGuRhD kLp3ISjw934tchr488H3Jo6Vw085Y3346PkJWgJIGuJkZUN78wazpezpHHeNVRSocFnvhEi0yksCG 1G748YAw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1t9300-00000007CQ2-3BRn; Thu, 07 Nov 2024 13:56:36 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1t92uz-00000007BX5-3LOk; Thu, 07 Nov 2024 13:51:27 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 779C15C58E6; Thu, 7 Nov 2024 13:50:40 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5BBB6C4CECC; Thu, 7 Nov 2024 13:51:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1730987484; bh=WjKW4w6m9vxglUpKnIKGk6mwn72chjGL/VfCQGNIAxM=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=ExGndzmsAu9yPvANhTikksjegfEO+gzD/zauKwUogXN0B4EhHorTvDxNnlxhF2RIv aOLG0RQ6HCywBNB8fJRWXcPvi7seUek9snum1XkoQBmfmKPOKwImKPD/xdkEqkfn2U 50oUpSQd84YFiZxHhbG3tH2NvGdiUxNkNkO79grcxDTydShRmbYqnrZ1LtdvpcNrTQ d1e/mDu7rcnUs9IPw/oVU5knuJnWEMI0IWP/tZ7v9G7SH88+0/Qzv9GAHf7AU1Gboi 8l3SogVe1V1KMC0vkQYX87wuBDWxZf13iU8Wd5bWCFH4cCG/J9VpmTWOVXd8y2G3T2 bJMkuClCQZCMw== From: Lorenzo Bianconi Date: Thu, 07 Nov 2024 14:50:53 +0100 Subject: [PATCH 1/3] PCI: mediatek-gen3: Add missing reset_control_deassert for mac_rst in mtk_pcie_en7581_power_up MIME-Version: 1.0 Message-Id: <20241107-pcie-en7581-fixes-v1-1-af0c872323c7@kernel.org> References: <20241107-pcie-en7581-fixes-v1-0-af0c872323c7@kernel.org> In-Reply-To: <20241107-pcie-en7581-fixes-v1-0-af0c872323c7@kernel.org> To: Ryder Lee , Jianjun Wang , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy?= =?utf-8?q?=C5=84ski?= , Manivannan Sadhasivam , Rob Herring , Bjorn Helgaas , Philipp Zabel , Matthias Brugger , AngeloGioacchino Del Regno Cc: linux-pci@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Lorenzo Bianconi X-Mailer: b4 0.14.2 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241107_055125_911883_1DDFFC95 X-CRM114-Status: UNSURE ( 9.72 ) X-CRM114-Notice: Please train this message. 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 Even if this is not a real issue since Airoha EN7581 SoC does not require the mac reset line, add missing reset_control_deassert() for mac reset line in mtk_pcie_en7581_power_up callback. Signed-off-by: Lorenzo Bianconi --- drivers/pci/controller/pcie-mediatek-gen3.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/pci/controller/pcie-mediatek-gen3.c b/drivers/pci/controller/pcie-mediatek-gen3.c index 66ce4b5d309bb6d64618c70ac5e0a529e0910511..0fac0b9fd785e463d26d29d695b923db41eef9cc 100644 --- a/drivers/pci/controller/pcie-mediatek-gen3.c +++ b/drivers/pci/controller/pcie-mediatek-gen3.c @@ -897,6 +897,9 @@ static int mtk_pcie_en7581_power_up(struct mtk_gen3_pcie *pcie) */ mdelay(PCIE_EN7581_RESET_TIME_MS); + /* MAC power on and enable transaction layer clocks */ + reset_control_deassert(pcie->mac_reset); + pm_runtime_enable(dev); pm_runtime_get_sync(dev); @@ -931,6 +934,7 @@ static int mtk_pcie_en7581_power_up(struct mtk_gen3_pcie *pcie) err_clk_prepare: pm_runtime_put_sync(dev); pm_runtime_disable(dev); + reset_control_assert(pcie->mac_reset); reset_control_bulk_assert(pcie->soc->phy_resets.num_resets, pcie->phy_resets); err_phy_deassert: phy_power_off(pcie->phy); From patchwork Thu Nov 7 13:50:54 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "lorenzo@kernel.org" X-Patchwork-Id: 13866547 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 D4FD2D4335D for ; Thu, 7 Nov 2024 14:00:23 +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:Cc:To:In-Reply-To:References :Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=unLD63mlfnLbbsnPXGXQINMsXcJV84XB4kO84Db/lAo=; b=t3qYQDrmMIFVozkrt6KwXVuFvk AMEh2x2/fT9QvrmTDY93I3qt0zupSJcwsw7BqRhoqzRU8cjep32IEh4Xky0VEaYQmTlihymFe6cO7 N6/XvEdfjW1NcghQPV6D5rTRNgplNH9wwJr6awyeYC4ZScmMQ/dQP0O3pcVHck0bEsWh6DRz0NfT9 ykrMjVQ4+eKxG/pUj2f2IC6hsCB+xs3TV0tcTLA2t/CGOWpKpraP2Whf2o20ekJ/k8x93uk/IeDRn dCNutK6LuMJ47FXsoPHu42O2ooEyG3x3MERDeHuXRSgjpGryiVK5bl+7mUeBr6pCzMZRatsV/EPi0 38Zta1RQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1t933R-00000007CzC-31fE; Thu, 07 Nov 2024 14:00:09 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1t92v2-00000007BYV-0lbO; Thu, 07 Nov 2024 13:51:29 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 094B45C58BD; Thu, 7 Nov 2024 13:50:43 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 123BAC4CED0; Thu, 7 Nov 2024 13:51:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1730987487; bh=EyDwIt88XF1ie7BfiMN0PnlL3XgXILjIU8/naicxr1A=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=KrrO1sAWC/yWE+U/fKXp2U0WRJrLNKqbduLjYdaKGr7aUOFo1pA6YcWtxSkQ+XD+y 63w9cjDUX/6NBHKjF9QsEJCEe+mf39xKnH/+suYjhl2uWiJ4xQs8JBKCm6eASY+zjR bxOcJN0d9llvXnZlXV1eo1Bsb27z0t2dzLoww1s9o6eJa8zZ/DUVcCygU5CGvGdjWh XjniDYse61zmVo9knPZBjpeRtQ//VtXqFi3rdVvGNNOP3PJe5lZnk1mqRxy55a4LRB BJmW7KeZY55Uv29JioF+rjw99U6Lv4MMdAZxbI90a1cKNV1oXM3YmTKKi2vPkehTAE htHd0YpGjDBsg== From: Lorenzo Bianconi Date: Thu, 07 Nov 2024 14:50:54 +0100 Subject: [PATCH 2/3] PCI: mediatek-gen3: rely on clk_bulk_prepare_enable in mtk_pcie_en7581_power_up MIME-Version: 1.0 Message-Id: <20241107-pcie-en7581-fixes-v1-2-af0c872323c7@kernel.org> References: <20241107-pcie-en7581-fixes-v1-0-af0c872323c7@kernel.org> In-Reply-To: <20241107-pcie-en7581-fixes-v1-0-af0c872323c7@kernel.org> To: Ryder Lee , Jianjun Wang , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy?= =?utf-8?q?=C5=84ski?= , Manivannan Sadhasivam , Rob Herring , Bjorn Helgaas , Philipp Zabel , Matthias Brugger , AngeloGioacchino Del Regno Cc: linux-pci@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Lorenzo Bianconi X-Mailer: b4 0.14.2 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241107_055128_301434_05798608 X-CRM114-Status: UNSURE ( 9.60 ) X-CRM114-Notice: Please train this message. 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 Squash clk_bulk_prepare and clk_bulk_enable in clk_bulk_prepare_enable in mtk_pcie_en7581_power_up routine Signed-off-by: Lorenzo Bianconi --- drivers/pci/controller/pcie-mediatek-gen3.c | 14 +++----------- 1 file changed, 3 insertions(+), 11 deletions(-) diff --git a/drivers/pci/controller/pcie-mediatek-gen3.c b/drivers/pci/controller/pcie-mediatek-gen3.c index 0fac0b9fd785e463d26d29d695b923db41eef9cc..8c8c733a145634cdbfefd339f4a692f25a6e24de 100644 --- a/drivers/pci/controller/pcie-mediatek-gen3.c +++ b/drivers/pci/controller/pcie-mediatek-gen3.c @@ -903,12 +903,6 @@ static int mtk_pcie_en7581_power_up(struct mtk_gen3_pcie *pcie) pm_runtime_enable(dev); pm_runtime_get_sync(dev); - err = clk_bulk_prepare(pcie->num_clks, pcie->clks); - if (err) { - dev_err(dev, "failed to prepare clock\n"); - goto err_clk_prepare; - } - val = FIELD_PREP(PCIE_VAL_LN0_DOWNSTREAM, 0x47) | FIELD_PREP(PCIE_VAL_LN1_DOWNSTREAM, 0x47) | FIELD_PREP(PCIE_VAL_LN0_UPSTREAM, 0x41) | @@ -921,17 +915,15 @@ static int mtk_pcie_en7581_power_up(struct mtk_gen3_pcie *pcie) FIELD_PREP(PCIE_K_FINETUNE_MAX, 0xf); writel_relaxed(val, pcie->base + PCIE_PIPE4_PIE8_REG); - err = clk_bulk_enable(pcie->num_clks, pcie->clks); + err = clk_bulk_prepare_enable(pcie->num_clks, pcie->clks); if (err) { dev_err(dev, "failed to prepare clock\n"); - goto err_clk_enable; + goto err_clk_init; } return 0; -err_clk_enable: - clk_bulk_unprepare(pcie->num_clks, pcie->clks); -err_clk_prepare: +err_clk_init: pm_runtime_put_sync(dev); pm_runtime_disable(dev); reset_control_assert(pcie->mac_reset); From patchwork Thu Nov 7 13:50:55 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "lorenzo@kernel.org" X-Patchwork-Id: 13866548 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 4EE55D43360 for ; 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Thu, 07 Nov 2024 14:02:09 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1t92v5-00000007BaD-0IVY; Thu, 07 Nov 2024 13:51:32 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id DDBDE5C2736; Thu, 7 Nov 2024 13:50:45 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E196BC4CECC; Thu, 7 Nov 2024 13:51:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1730987490; bh=btGOvKZTxZhuaxAnzRi1ntXNxujI8W8vvUilrAMbVOE=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=Zikc2VXFiWG6/99xKSMZnRo6dLllsbHAsCjJjy7JHGNrfbHuwtWCrEQcLnJ5Xp+ID /VYRfkguYkSTn/d6DCMrjYv4Scq8fIshoRYWkg45ttHdpuIdGluoJLVsCZy5Q4QhJ6 sXK/hFtofEGozO18hsVQnDNcrnKu36od0fVooytjIAddhozdY5CFXaml6RGoxXbRaC iBZg6gxCBMmWN0wVHfk7Q/iwuRj8v8YleKr7zoO8IZMZEkNGy71tLinT65t4z3u+pr cxuHCc0fNRJVcssxCE1A5/HPOJz2Ubn43OknWXDQkxH4X7bD389u2zHn48KceYGQzn 24uMjxTfiiFJg== From: Lorenzo Bianconi Date: Thu, 07 Nov 2024 14:50:55 +0100 Subject: [PATCH 3/3] PCI: mediatek-gen3: Move reset/assert callbacks in .power_up() MIME-Version: 1.0 Message-Id: <20241107-pcie-en7581-fixes-v1-3-af0c872323c7@kernel.org> References: <20241107-pcie-en7581-fixes-v1-0-af0c872323c7@kernel.org> In-Reply-To: <20241107-pcie-en7581-fixes-v1-0-af0c872323c7@kernel.org> To: Ryder Lee , Jianjun Wang , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy?= =?utf-8?q?=C5=84ski?= , Manivannan Sadhasivam , Rob Herring , Bjorn Helgaas , Philipp Zabel , Matthias Brugger , AngeloGioacchino Del Regno Cc: linux-pci@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Lorenzo Bianconi X-Mailer: b4 0.14.2 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241107_055131_234451_D5862867 X-CRM114-Status: GOOD ( 12.39 ) 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 In order to make the code more readable, move phy and mac reset lines assert/de-assert configuration in .power_up callback (mtk_pcie_en7581_power_up/mtk_pcie_power_up). Signed-off-by: Lorenzo Bianconi --- drivers/pci/controller/pcie-mediatek-gen3.c | 24 ++++++++++++++++-------- 1 file changed, 16 insertions(+), 8 deletions(-) diff --git a/drivers/pci/controller/pcie-mediatek-gen3.c b/drivers/pci/controller/pcie-mediatek-gen3.c index 8c8c733a145634cdbfefd339f4a692f25a6e24de..c0127d0fb4f059b9f9e816360130e183e8f0e990 100644 --- a/drivers/pci/controller/pcie-mediatek-gen3.c +++ b/drivers/pci/controller/pcie-mediatek-gen3.c @@ -867,6 +867,13 @@ static int mtk_pcie_en7581_power_up(struct mtk_gen3_pcie *pcie) int err; u32 val; + /* + * The controller may have been left out of reset by the bootloader + * so make sure that we get a clean start by asserting resets here. + */ + reset_control_bulk_assert(pcie->soc->phy_resets.num_resets, + pcie->phy_resets); + reset_control_assert(pcie->mac_reset); /* * Wait for the time needed to complete the bulk assert in * mtk_pcie_setup for EN7581 SoC. @@ -941,6 +948,15 @@ static int mtk_pcie_power_up(struct mtk_gen3_pcie *pcie) struct device *dev = pcie->dev; int err; + /* + * The controller may have been left out of reset by the bootloader + * so make sure that we get a clean start by asserting resets here. + */ + reset_control_bulk_assert(pcie->soc->phy_resets.num_resets, + pcie->phy_resets); + reset_control_assert(pcie->mac_reset); + usleep_range(10, 20); + /* PHY power on and enable pipe clock */ err = reset_control_bulk_deassert(pcie->soc->phy_resets.num_resets, pcie->phy_resets); if (err) { @@ -1013,14 +1029,6 @@ static int mtk_pcie_setup(struct mtk_gen3_pcie *pcie) * counter since the bulk is shared. */ reset_control_bulk_deassert(pcie->soc->phy_resets.num_resets, pcie->phy_resets); - /* - * The controller may have been left out of reset by the bootloader - * so make sure that we get a clean start by asserting resets here. - */ - reset_control_bulk_assert(pcie->soc->phy_resets.num_resets, pcie->phy_resets); - - reset_control_assert(pcie->mac_reset); - usleep_range(10, 20); /* Don't touch the hardware registers before power up */ err = pcie->soc->power_up(pcie);