[v2,15/53] mtd: nand: denali_dt: remove dma-mask DT property

Message ID 1490191680-14481-16-git-send-email-yamada.masahiro@socionext.com
State Accepted
Commit 60d920d32ca40660e382cf9ccbc236599a49e607
Headers show
Series
  • [v2,01/53] mtd: nand: allow to set only one of ECC size and ECC strength from DT
Related show

Commit Message

Masahiro Yamada March 22, 2017, 2:07 p.m.
The driver sets appropriate DMA mask.  Delete the "dma-mask" DT
property.  See [1] for negative comments for this binding.

[1] https://lkml.org/lkml/2016/2/8/57

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

Acked-by: Rob Herring <robh@kernel.org>

---

Changes in v2: None

 Documentation/devicetree/bindings/mtd/denali-nand.txt | 2 --
 drivers/mtd/nand/denali_dt.c                          | 9 ---------
 2 files changed, 11 deletions(-)

-- 
2.7.4


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diff --git a/Documentation/devicetree/bindings/mtd/denali-nand.txt b/Documentation/devicetree/bindings/mtd/denali-nand.txt
index 6f4ab4c..e593bbe 100644
--- a/Documentation/devicetree/bindings/mtd/denali-nand.txt
+++ b/Documentation/devicetree/bindings/mtd/denali-nand.txt
@@ -6,7 +6,6 @@  Required properties:
   - reg : should contain registers location and length for data and reg.
   - reg-names: Should contain the reg names "nand_data" and "denali_reg"
   - interrupts : The interrupt number.
-  - dm-mask : DMA bit mask
 
 The device tree may optionally contain sub-nodes describing partitions of the
 address space. See partition.txt for more detail.
@@ -20,5 +19,4 @@  nand: nand@ff900000 {
 	reg = <0xff900000 0x100000>, <0xffb80000 0x10000>;
 	reg-names = "nand_data", "denali_reg";
 	interrupts = <0 144 4>;
-	dma-mask = <0xffffffff>;
 };
diff --git a/drivers/mtd/nand/denali_dt.c b/drivers/mtd/nand/denali_dt.c
index 9577bfd..b8a8284 100644
--- a/drivers/mtd/nand/denali_dt.c
+++ b/drivers/mtd/nand/denali_dt.c
@@ -46,8 +46,6 @@  static const struct of_device_id denali_nand_dt_ids[] = {
 };
 MODULE_DEVICE_TABLE(of, denali_nand_dt_ids);
 
-static u64 denali_dma_mask;
-
 static int denali_dt_probe(struct platform_device *ofdev)
 {
 	struct resource *denali_reg, *nand_data;
@@ -83,13 +81,6 @@  static int denali_dt_probe(struct platform_device *ofdev)
 	if (IS_ERR(denali->flash_mem))
 		return PTR_ERR(denali->flash_mem);
 
-	if (!of_property_read_u32(ofdev->dev.of_node,
-		"dma-mask", (u32 *)&denali_dma_mask)) {
-		denali->dev->dma_mask = &denali_dma_mask;
-	} else {
-		denali->dev->dma_mask = NULL;
-	}
-
 	dt->clk = devm_clk_get(&ofdev->dev, NULL);
 	if (IS_ERR(dt->clk)) {
 		dev_err(&ofdev->dev, "no clk available\n");