[ARM] pxa/zeus: relax memory timings on Zeus ethernet ports
DM9000s on Zeus sometime fail under heavy load. Relaxing the timings a bit seems to be of a great help. Signed-off-by: Marc Zyngier <maz@misterjones.org> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
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@ -726,9 +726,18 @@ static mfp_cfg_t zeus_pin_config[] __initdata = {
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GPIO99_GPIO, /* CF RDY */
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};
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/*
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* DM9k MSCx settings: SRAM, 16 bits
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* 17 cycles delay first access
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* 5 cycles delay next access
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* 13 cycles recovery time
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* faster device
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*/
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#define DM9K_MSC_VALUE 0xe4c9
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static void __init zeus_init(void)
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{
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u16 dm9000_msc = 0xe279;
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u16 dm9000_msc = DM9K_MSC_VALUE;
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system_rev = __raw_readw(ZEUS_CPLD_VERSION);
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pr_info("Zeus CPLD V%dI%d\n", (system_rev & 0xf0) >> 4, (system_rev & 0x0f));
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