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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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aac9aa37e5
Some devices (SMSC9217, SMSC9218 and SMSC9221 at least) have better timings, allowing a higher transfer speed. Create a common file with these timings. Performance results with iperf: - omap-gpmc-smsc911x.dtsi => 54.9 Mbps - omap-gpmc-smsc9221.dtsi => 92.7 Mbps Signed-off-by: Florian Vaussard <florian.vaussard@epfl.ch> Signed-off-by: Tony Lindgren <tony@atomide.com>
59 lines
1.3 KiB
Plaintext
59 lines
1.3 KiB
Plaintext
/*
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* Common file for GPMC connected smsc9221 on omaps
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*
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* Compared to smsc911x, smsc9221 (and others like smsc9217
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* or smsc 9218) has faster timings, leading to higher
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* bandwidth.
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*
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* Note that the board specifc DTS file needs to specify
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* ranges, pinctrl, reg, interrupt parent and interrupts.
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*/
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/ {
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vddvario: regulator-vddvario {
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compatible = "regulator-fixed";
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regulator-name = "vddvario";
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regulator-always-on;
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};
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vdd33a: regulator-vdd33a {
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compatible = "regulator-fixed";
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regulator-name = "vdd33a";
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regulator-always-on;
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};
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};
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&gpmc {
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ethernet@gpmc {
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compatible = "smsc,lan9221","smsc,lan9115";
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bank-width = <2>;
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gpmc,mux-add-data;
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gpmc,cs-on-ns = <0>;
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gpmc,cs-rd-off-ns = <42>;
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gpmc,cs-wr-off-ns = <36>;
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gpmc,adv-on-ns = <6>;
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gpmc,adv-rd-off-ns = <12>;
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gpmc,adv-wr-off-ns = <12>;
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gpmc,oe-on-ns = <0>;
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gpmc,oe-off-ns = <42>;
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gpmc,we-on-ns = <0>;
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gpmc,we-off-ns = <36>;
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gpmc,rd-cycle-ns = <60>;
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gpmc,wr-cycle-ns = <54>;
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gpmc,access-ns = <36>;
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gpmc,page-burst-access-ns = <0>;
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gpmc,bus-turnaround-ns = <0>;
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gpmc,cycle2cycle-delay-ns = <0>;
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gpmc,wr-data-mux-bus-ns = <18>;
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gpmc,wr-access-ns = <42>;
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gpmc,cycle2cycle-samecsen;
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gpmc,cycle2cycle-diffcsen;
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vddvario-supply = <&vddvario>;
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vdd33a-supply = <&vdd33a>;
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reg-io-width = <4>;
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smsc,save-mac-address;
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};
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};
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