>From v4.2+ the GPMC code has been changed to reset all the bootloader
GPMC settings when the kernel starts.
As such, this DTS file now needs the external FRAM defined.
Signed-off-by: Mark Jackson <mpfj@xxxxxxxxxxxxx>
---
arch/arm/boot/dts/am335x-nano.dts | 31 ++++++++++++++++++++++++++++++-
1 file changed, 30 insertions(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/am335x-nano.dts b/arch/arm/boot/dts/am335x-nano.dts
index 483d585..807494b 100644
--- a/arch/arm/boot/dts/am335x-nano.dts
+++ b/arch/arm/boot/dts/am335x-nano.dts
@@ -249,7 +249,8 @@
#address-cells = <2>;
#size-cells = <1>;
- ranges = <0 0 0x08000000 0x08000000>; /* CS0: NOR 128M */
+ ranges = <0 0 0x08000000 0x08000000>, /* CS0: NOR 128M */
+ <1 0 0x1c000000 0x01000000>; /* CS1: FRAM 16M */
nor@0,0 {
reg = <0 0x00000000 0x08000000>;
@@ -342,6 +343,34 @@
reg = <0x04000000 0x04000000>; /* 64MB */
};
};
+
+ fram@1,0 {
+ reg = <1 0x00000000 0x01000000>;
+ bank-width = <2>;
+
+ gpmc,mux-add-data = <2>;
+
+ gpmc,sync-clk-ps = <0>;
+ gpmc,cs-on-ns = <0>;
+ gpmc,cs-rd-off-ns = <160>;
+ gpmc,cs-wr-off-ns = <160>;
+ gpmc,adv-on-ns = <10>;
+ gpmc,adv-rd-off-ns = <20>;
+ gpmc,adv-wr-off-ns = <20>;
+ gpmc,oe-on-ns = <30>;
+ gpmc,oe-off-ns = <150>;
+ gpmc,we-on-ns = <30>;
+ gpmc,we-off-ns = <150>;
+ gpmc,rd-cycle-ns = <160>;
+ gpmc,wr-cycle-ns = <160>;
+ gpmc,access-ns = <130>;
+ gpmc,page-burst-access-ns = <10>;
+ gpmc,cycle2cycle-samecsen;
+ gpmc,cycle2cycle-diffcsen;
+ gpmc,cycle2cycle-delay-ns = <10>;
+ gpmc,wr-data-mux-bus-ns = <30>;
+ gpmc,wr-access-ns = <0>;
+ };
};
&mac {
--
2.7.4
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