Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751646AbdG0CCF (ORCPT ); Wed, 26 Jul 2017 22:02:05 -0400 Received: from mailgw01.mediatek.com ([210.61.82.183]:40368 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1751467AbdG0CBZ (ORCPT ); Wed, 26 Jul 2017 22:01:25 -0400 From: To: , , , CC: , , , , , , , , , , , , , Honghui Zhang Subject: [PATCH 1/3] memory: mtk-smi: add larbid init routine Date: Thu, 27 Jul 2017 10:01:10 +0800 Message-ID: <1501120872-19652-2-git-send-email-honghui.zhang@mediatek.com> X-Mailer: git-send-email 2.6.4 In-Reply-To: <1501120872-19652-1-git-send-email-honghui.zhang@mediatek.com> References: <1501120872-19652-1-git-send-email-honghui.zhang@mediatek.com> MIME-Version: 1.0 Content-Type: text/plain X-MTK: N Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1393 Lines: 42 From: Honghui Zhang In the commit 3c8f4ad85c4b ("memory/mediatek: add support for mt2701"), the larb->larbid was added but not initialized. Mediatek's gen1 smi need this hardware larbid information to get the register offset which controls whether enable iommu for this larb. This patch add the initialize routine for larbid. Signed-off-by: Honghui Zhang --- drivers/memory/mtk-smi.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/memory/mtk-smi.c b/drivers/memory/mtk-smi.c index 2b798bb4..fe36b3e 100644 --- a/drivers/memory/mtk-smi.c +++ b/drivers/memory/mtk-smi.c @@ -240,6 +240,7 @@ static int mtk_smi_larb_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct device_node *smi_node; struct platform_device *smi_pdev; + int err; if (!dev->pm_domain) return -EPROBE_DEFER; @@ -263,6 +264,14 @@ static int mtk_smi_larb_probe(struct platform_device *pdev) return PTR_ERR(larb->smi.clk_smi); larb->smi.dev = dev; + err = of_property_read_u32(dev->of_node, "mediatek,larbid", + &larb->larbid); + if (err && of_device_is_compatible(dev->of_node, + "mediatek,mt2701-smi-larb")) { + dev_err(dev, "missing larbid property\n"); + return err; + } + smi_node = of_parse_phandle(dev->of_node, "mediatek,smi", 0); if (!smi_node) return -EINVAL; -- 2.6.4