Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 3.16 187/357] ARM: dts: dra7-evm: Fix NAND GPMC timings | Date | Fri, 3 Oct 2014 14:29:33 -0700 |
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3.16-stable review patch. If anyone has any objections, please let me know.
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From: Roger Quadros <rogerq@ti.com>
commit 5990047cef0c6a36eefcb166bd32d99a8f95c75b upstream.
The nand timings were scaled down by 2 to account for the 2x rate returned by clk_get_rate(gpmc_fclk).
As the clock data got fixed by [1], revert back to actual timings (i.e. scale them up by 2).
Without this NAND doesn't work on dra7-evm.
[1] - commit dd94324b983afe114ba9e7ee3649313b451f63ce ARM: dts: dra7xx-clocks: Fix the l3 and l4 clock rates
Fixes: ff66a3c86e00 ("ARM: dts: dra7: add support for parallel NAND flash") Signed-off-by: Roger Quadros <rogerq@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- arch/arm/boot/dts/dra7-evm.dts | 27 ++++++++++++--------------- 1 file changed, 12 insertions(+), 15 deletions(-)
--- a/arch/arm/boot/dts/dra7-evm.dts +++ b/arch/arm/boot/dts/dra7-evm.dts @@ -427,22 +427,19 @@ gpmc,device-width = <2>; gpmc,sync-clk-ps = <0>; gpmc,cs-on-ns = <0>; - gpmc,cs-rd-off-ns = <40>; - gpmc,cs-wr-off-ns = <40>; + gpmc,cs-rd-off-ns = <80>; + gpmc,cs-wr-off-ns = <80>; gpmc,adv-on-ns = <0>; - gpmc,adv-rd-off-ns = <30>; - gpmc,adv-wr-off-ns = <30>; - gpmc,we-on-ns = <5>; - gpmc,we-off-ns = <25>; - gpmc,oe-on-ns = <2>; - gpmc,oe-off-ns = <20>; - gpmc,access-ns = <20>; - gpmc,wr-access-ns = <40>; - gpmc,rd-cycle-ns = <40>; - gpmc,wr-cycle-ns = <40>; - gpmc,wait-pin = <0>; - gpmc,wait-on-read; - gpmc,wait-on-write; + gpmc,adv-rd-off-ns = <60>; + gpmc,adv-wr-off-ns = <60>; + gpmc,we-on-ns = <10>; + gpmc,we-off-ns = <50>; + gpmc,oe-on-ns = <4>; + gpmc,oe-off-ns = <40>; + gpmc,access-ns = <40>; + gpmc,wr-access-ns = <80>; + gpmc,rd-cycle-ns = <80>; + gpmc,wr-cycle-ns = <80>; gpmc,bus-turnaround-ns = <0>; gpmc,cycle2cycle-delay-ns = <0>; gpmc,clk-activation-ns = <0>;
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