Measurements: Massive Display-related power savings

Andy Green andy at openmoko.com
Fri Oct 17 13:25:34 CEST 2008


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Somebody in the thread at some point said:

|> Maybe the SPI timings are now even lower.  You might want to try that.
| What do I have to do?

In arch/arm/mach-s3c2440/mach_gta02.c there's this:

static struct spi_board_info gta02_spi_board_info[] = {
	{
		.modalias	= "jbt6k74",
		/* platform_data */
		.platform_data	= &jbt6k74_pdata,
		/* controller_data */
		/* irq */
		.max_speed_hz	= 10 * 1000 * 1000,
		.bus_num	= 2,
		/* chip_select */
	},
};

it means reduce the max_speed_hz from 10MHz to say 1MHz see if it
impacts it I guess.

- -Andy
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