1 From f3565e6c2276411275e707a5442d3f69cc111273 Mon Sep 17 00:00:00 2001
2 Message-Id: <f3565e6c2276411275e707a5442d3f69cc111273.1678718888.git.lorenzo@kernel.org>
3 From: Lorenzo Bianconi <lorenzo@kernel.org>
4 Date: Sun, 12 Mar 2023 18:51:47 +0100
5 Subject: [PATCH net-next 1/3] net: ethernet: mtk_wed: move ilm a dedicated dts
8 Since the ilm memory region is not part of the RAM SoC, move ilm in a
9 deidicated syscon node.
10 This patch helps to keep backward-compatibility with older version of
11 uboot codebase where we have a limit of 8 reserved-memory dts child
13 Keep backward-compatibility with older dts version where ilm was defined
14 as reserved-memory child node.
16 Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
18 drivers/net/ethernet/mediatek/mtk_wed_mcu.c | 55 ++++++++++++++++++---
19 1 file changed, 49 insertions(+), 6 deletions(-)
21 --- a/drivers/net/ethernet/mediatek/mtk_wed_mcu.c
22 +++ b/drivers/net/ethernet/mediatek/mtk_wed_mcu.c
23 @@ -300,6 +300,52 @@ next:
27 +mtk_wed_mcu_load_memory_regions(struct mtk_wed_wo *wo,
28 + struct mtk_wed_wo_memory_region *region)
30 + struct device_node *np;
33 + /* firmware EMI memory region */
34 + ret = mtk_wed_get_reserved_memory_region(wo,
35 + ®ion[MTK_WED_WO_REGION_EMI]);
39 + /* firmware DATA memory region */
40 + ret = mtk_wed_get_reserved_memory_region(wo,
41 + ®ion[MTK_WED_WO_REGION_DATA]);
45 + np = of_parse_phandle(wo->hw->node, "mediatek,wo-ilm", 0);
47 + struct mtk_wed_wo_memory_region *ilm_region;
48 + struct resource res;
50 + ret = of_address_to_resource(np, 0, &res);
56 + ilm_region = ®ion[MTK_WED_WO_REGION_ILM];
57 + ilm_region->phy_addr = res.start;
58 + ilm_region->size = resource_size(&res);
59 + ilm_region->addr = devm_ioremap(wo->hw->dev, res.start,
60 + resource_size(&res));
62 + return IS_ERR(ilm_region->addr) ? PTR_ERR(ilm_region->addr) : 0;
65 + /* For backward compatibility, we need to check if ILM
66 + * node is defined through reserved memory property.
68 + return mtk_wed_get_reserved_memory_region(wo,
69 + ®ion[MTK_WED_WO_REGION_ILM]);
73 mtk_wed_mcu_load_firmware(struct mtk_wed_wo *wo)
75 static struct mtk_wed_wo_memory_region mem_region[] = {
76 @@ -320,12 +366,9 @@ mtk_wed_mcu_load_firmware(struct mtk_wed
80 - /* load firmware region metadata */
81 - for (i = 0; i < ARRAY_SIZE(mem_region); i++) {
82 - ret = mtk_wed_get_reserved_memory_region(wo, &mem_region[i]);
86 + ret = mtk_wed_mcu_load_memory_regions(wo, mem_region);
90 wo->boot_regmap = syscon_regmap_lookup_by_phandle(wo->hw->node,
91 "mediatek,wo-cpuboot");