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Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit From: Kenny Root Add support for parsing the 'memory-region' DT property in addition to the 'reg' DT property. This enables use cases where the pmem region is not in I/O address space or dedicated memory (e.g. a bootloader carveout). Signed-off-by: Kenny Root Signed-off-by: Alistair Delva Reviewed-by: "Oliver O'Halloran" Cc: Rob Herring Cc: Dan Williams Cc: Vishal Verma Cc: Dave Jiang Cc: Ira Weiny Cc: devicetree@vger.kernel.org Cc: linux-nvdimm@lists.01.org Cc: kernel-team@android.com --- [v3: adelva: remove duplicate "From:"] drivers/nvdimm/of_pmem.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) diff --git a/drivers/nvdimm/of_pmem.c b/drivers/nvdimm/of_pmem.c index fdf54494e8c9..cff47cc5fc4a 100644 --- a/drivers/nvdimm/of_pmem.c +++ b/drivers/nvdimm/of_pmem.c @@ -49,11 +49,12 @@ static void of_pmem_register_region(struct platform_device *pdev, static int of_pmem_region_probe(struct platform_device *pdev) { + struct device_node *mr_np, *np; struct of_pmem_private *priv; - struct device_node *np; struct nvdimm_bus *bus; + struct resource res; bool is_volatile; - int i; + int i, ret; np = dev_of_node(&pdev->dev); if (!np) @@ -83,6 +84,21 @@ static int of_pmem_region_probe(struct platform_device *pdev) is_volatile); } + i = 0; + while ((mr_np = of_parse_phandle(np, "memory-region", i++))) { + ret = of_address_to_resource(mr_np, 0, &res); + if (ret) { + dev_warn( + &pdev->dev, + "Unable to acquire memory-region from %pOF: %d\n", + mr_np, ret); + } else { + of_pmem_register_region(pdev, bus, np, &res, + is_volatile); + } + of_node_put(mr_np); + } + return 0; } -- 2.25.0.265.gbab2e86ba0-goog _______________________________________________ Linux-nvdimm mailing list -- linux-nvdimm@lists.01.org To unsubscribe send an email to linux-nvdimm-leave@lists.01.org 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 X-Spam-Level: X-Spam-Status: No, score=-17.4 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT, USER_IN_DEF_DKIM_WL autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5C292C35677 for ; 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charset="UTF-8" Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: Kenny Root Add support for parsing the 'memory-region' DT property in addition to the 'reg' DT property. This enables use cases where the pmem region is not in I/O address space or dedicated memory (e.g. a bootloader carveout). Signed-off-by: Kenny Root Signed-off-by: Alistair Delva Reviewed-by: "Oliver O'Halloran" Cc: Rob Herring Cc: Dan Williams Cc: Vishal Verma Cc: Dave Jiang Cc: Ira Weiny Cc: devicetree@vger.kernel.org Cc: linux-nvdimm@lists.01.org Cc: kernel-team@android.com --- [v3: adelva: remove duplicate "From:"] drivers/nvdimm/of_pmem.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) diff --git a/drivers/nvdimm/of_pmem.c b/drivers/nvdimm/of_pmem.c index fdf54494e8c9..cff47cc5fc4a 100644 --- a/drivers/nvdimm/of_pmem.c +++ b/drivers/nvdimm/of_pmem.c @@ -49,11 +49,12 @@ static void of_pmem_register_region(struct platform_device *pdev, static int of_pmem_region_probe(struct platform_device *pdev) { + struct device_node *mr_np, *np; struct of_pmem_private *priv; - struct device_node *np; struct nvdimm_bus *bus; + struct resource res; bool is_volatile; - int i; + int i, ret; np = dev_of_node(&pdev->dev); if (!np) @@ -83,6 +84,21 @@ static int of_pmem_region_probe(struct platform_device *pdev) is_volatile); } + i = 0; + while ((mr_np = of_parse_phandle(np, "memory-region", i++))) { + ret = of_address_to_resource(mr_np, 0, &res); + if (ret) { + dev_warn( + &pdev->dev, + "Unable to acquire memory-region from %pOF: %d\n", + mr_np, ret); + } else { + of_pmem_register_region(pdev, bus, np, &res, + is_volatile); + } + of_node_put(mr_np); + } + return 0; } -- 2.25.0.265.gbab2e86ba0-goog