Re: [PATCH v4 2/2] ath11k: Use reserved host DDR addresses from DT for PCI devices
From: Sven Eckelmann <sven@narfation.org>
Date: 2021-11-21 14:45:40
Also in:
ath11k, linux-devicetree
On Sunday, 21 November 2021 15:22:01 CET Anilkumar Kolli wrote: [...]
+static int ath11k_mhi_read_addr_from_dt(struct mhi_controller *mhi_ctrl)
+{
+ struct device_node *np;
+ dma_addr_t start;
+ u32 reg[4];
+ int ret;
+
+ np = of_find_node_by_type(NULL, "memory");
+ if (!np)
+ return -ENOENT;
+
+ ret = of_property_read_u32_array(np, "reg", reg, 4);
+ if (ret)
+ return ret;
+
+ start = reg[0] + reg[1];
+ mhi_ctrl->iova_start = start + 0x1000000;
+ mhi_ctrl->iova_stop = start + reg[2] + reg[3];
+
+ return 0;
+}
+[...]
+ ret = of_property_read_u32(dev->of_node, "memory-region",
+ &hremote_phandle);
+ if (ret) {
+ ath11k_dbg(ab, ATH11K_DBG_QMI,
+ "qmi fail to get hremote phandle\n");
+ return ret;
+ }
+
+ hremote_node = of_find_node_by_phandle(hremote_phandle);
+ if (!hremote_node) {
+ ath11k_dbg(ab, ATH11K_DBG_QMI,
+ "qmi fail to get hremote_node\n");
+ return ret;
+ }
+
+ ret = of_property_read_u32_array(hremote_node, "reg", reg, 4);
+ if (ret) {
+ ath11k_dbg(ab, ATH11K_DBG_QMI,
+ "qmi fail to get reg from hremote\n");
+ return ret;
+ }
+
+ start = reg[0] + reg[1];
+ size = reg[2] + reg[3];See my messages for v2 [1] and v3 [2] Kind regards, Sven [1] https://patchwork.kernel.org/project/linux-wireless/patch/1637082058-6398-2-git-send-email-akolli@codeaurora.org/#24605391 [2] https://patchwork.kernel.org/project/linux-wireless/patch/1637244892-27267-2-git-send-email-akolli@codeaurora.org/#24605417