From eb43e023130b5021c1ffad4d5c84cb310ffcb0f6 Mon Sep 17 00:00:00 2001 From: Marcin Wojtas Date: Mon, 14 Mar 2016 09:38:56 +0100 Subject: misc: sram: add optional ioremap without write combining Some SRAM users may require non-bufferable access to the memory, which is impossible, because devm_ioremap_wc() is used for setting sram->virt_base. This commit adds optional flag 'no-memory-wc', which allow to choose remap method, using DT property. Documentation is updated accordingly. Signed-off-by: Marcin Wojtas Signed-off-by: David S. Miller --- Documentation/devicetree/bindings/sram/sram.txt | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'Documentation/devicetree/bindings/sram') diff --git a/Documentation/devicetree/bindings/sram/sram.txt b/Documentation/devicetree/bindings/sram/sram.txt index 42ee9438b771..227e3a341af1 100644 --- a/Documentation/devicetree/bindings/sram/sram.txt +++ b/Documentation/devicetree/bindings/sram/sram.txt @@ -25,6 +25,11 @@ Required properties in the sram node: - ranges : standard definition, should translate from local addresses within the sram to bus addresses +Optional properties in the sram node: + +- no-memory-wc : the flag indicating, that SRAM memory region has not to + be remapped as write combining. WC is used by default. + Required properties in the area nodes: - reg : iomem address range, relative to the SRAM range -- cgit v1.2.3