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authorTony Lindgren <tony@atomide.com>2014-11-04 03:48:16 +0300
committerTony Lindgren <tony@atomide.com>2014-11-04 03:48:16 +0300
commit13aec8e419ac1b02610fd7d550121bf286a3cf24 (patch)
treebd8a5b9aaa062f3e6fdaf643d07005e7d5c5ce6d /arch/arm/boot/dts/omap-gpmc-smsc911x.dtsi
parentb5399ea8453ac1ffe5c1515ba63afc978e242e7f (diff)
downloadlinux-13aec8e419ac1b02610fd7d550121bf286a3cf24.tar.xz
ARM: dts: Use better omap GPMC timings for LAN9220
With the GPMC warnings now enabled, I noticed the LAN9220 timings can overflow the GPMC registers with 200MHz L3 speed. Earlier we were just skipping the bad timings and would continue with the bootloader timings. Now we no longer allow to continue with bad timings as we have the timings in the .dts files. We could start using the GPMC clock divider, but let's instead use the u-boot timings that are known to be working and a bit faster. These are basically the u-boot NET_GPMC_CONFIG[1-6] defines deciphered. Except that we don't set gpmc,burst-length as that's only partially configured and does not seem to work if fully enabled. [tony@atomide.com: updated to remove gpmc,burst-length] Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/boot/dts/omap-gpmc-smsc911x.dtsi')
-rw-r--r--arch/arm/boot/dts/omap-gpmc-smsc911x.dtsi41
1 files changed, 23 insertions, 18 deletions
diff --git a/arch/arm/boot/dts/omap-gpmc-smsc911x.dtsi b/arch/arm/boot/dts/omap-gpmc-smsc911x.dtsi
index 521c587acaee..445fafc73254 100644
--- a/arch/arm/boot/dts/omap-gpmc-smsc911x.dtsi
+++ b/arch/arm/boot/dts/omap-gpmc-smsc911x.dtsi
@@ -23,24 +23,29 @@
ethernet@gpmc {
compatible = "smsc,lan9221", "smsc,lan9115";
bank-width = <2>;
- gpmc,mux-add-data;
- gpmc,cs-on-ns = <1>;
- gpmc,cs-rd-off-ns = <180>;
- gpmc,cs-wr-off-ns = <180>;
- gpmc,adv-rd-off-ns = <18>;
- gpmc,adv-wr-off-ns = <48>;
- gpmc,oe-on-ns = <54>;
- gpmc,oe-off-ns = <168>;
- gpmc,we-on-ns = <54>;
- gpmc,we-off-ns = <168>;
- gpmc,rd-cycle-ns = <186>;
- gpmc,wr-cycle-ns = <186>;
- gpmc,access-ns = <144>;
- gpmc,page-burst-access-ns = <24>;
- gpmc,bus-turnaround-ns = <90>;
- gpmc,cycle2cycle-delay-ns = <90>;
- gpmc,cycle2cycle-samecsen;
- gpmc,cycle2cycle-diffcsen;
+ gpmc,device-width = <1>;
+ gpmc,cycle2cycle-samecsen = <1>;
+ gpmc,cycle2cycle-diffcsen = <1>;
+ gpmc,cs-on-ns = <5>;
+ gpmc,cs-rd-off-ns = <150>;
+ gpmc,cs-wr-off-ns = <150>;
+ gpmc,adv-on-ns = <0>;
+ gpmc,adv-rd-off-ns = <15>;
+ gpmc,adv-wr-off-ns = <40>;
+ gpmc,oe-on-ns = <45>;
+ gpmc,oe-off-ns = <140>;
+ gpmc,we-on-ns = <45>;
+ gpmc,we-off-ns = <140>;
+ gpmc,rd-cycle-ns = <155>;
+ gpmc,wr-cycle-ns = <155>;
+ gpmc,access-ns = <120>;
+ gpmc,page-burst-access-ns = <20>;
+ gpmc,bus-turnaround-ns = <75>;
+ gpmc,cycle2cycle-delay-ns = <75>;
+ gpmc,wait-monitoring-ns = <0>;
+ gpmc,clk-activation-ns = <0>;
+ gpmc,wr-data-mux-bus-ns = <0>;
+ gpmc,wr-access-ns = <0>;
vddvario-supply = <&vddvario>;
vdd33a-supply = <&vdd33a>;
reg-io-width = <4>;