From 13aec8e419ac1b02610fd7d550121bf286a3cf24 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Mon, 3 Nov 2014 16:48:16 -0800 Subject: [PATCH] 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 --- arch/arm/boot/dts/omap-gpmc-smsc911x.dtsi | 41 +++++++++++++---------- arch/arm/boot/dts/omap3-sb-t35.dtsi | 41 +++++++++++++---------- 2 files changed, 46 insertions(+), 36 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>; diff --git a/arch/arm/boot/dts/omap3-sb-t35.dtsi b/arch/arm/boot/dts/omap3-sb-t35.dtsi index d59e3de1441e..28e16a6ce4bd 100644 --- a/arch/arm/boot/dts/omap3-sb-t35.dtsi +++ b/arch/arm/boot/dts/omap3-sb-t35.dtsi @@ -22,24 +22,29 @@ interrupts = <1 IRQ_TYPE_LEVEL_LOW>; reg = <4 0 0xff>; 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>; -- 2.34.1