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am33xx: Add support, update omap3 McSPI driver

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Signed-off-by: Tom Rini <trini@ti.com>
This commit is contained in:
Tom Rini 2012-08-08 14:29:51 -07:00 • committed by Albert ARIBAUD
parent 6bfca5031b
commit 4c0620bf42
3 changed files with 16 additions and 0 deletions
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5
arch/arm/cpu/armv7/am33xx/clock.c
View file

@ -148,6 +148,11 @@ static void enable_per_clocks(void)
writel(PRCM_MOD_EN, &cmper->cpgmac0clkctrl);
while ((readl(&cmper->cpgmac0clkctrl) & CPGMAC0_IDLE) != PRCM_FUNCTL)
;
/* spi0 */
writel(PRCM_MOD_EN, &cmper->spi0clkctrl);
while (readl(&cmper->spi0clkctrl) != PRCM_MOD_EN)
;
}
static void mpu_pll_config(void)

6
drivers/spi/omap3_spi.c
View file

@ -86,15 +86,21 @@ struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
case 0:
ds->regs = (struct mcspi *)OMAP3_MCSPI1_BASE;
break;
#ifdef OMAP3_MCSPI2_BASE
case 1:
ds->regs = (struct mcspi *)OMAP3_MCSPI2_BASE;
break;
#endif
#ifdef OMAP3_MCSPI3_BASE
case 2:
ds->regs = (struct mcspi *)OMAP3_MCSPI3_BASE;
break;
#endif
#ifdef OMAP3_MCSPI4_BASE
case 3:
ds->regs = (struct mcspi *)OMAP3_MCSPI4_BASE;
break;
#endif
default:
printf("SPI error: unsupported bus %i. \
Supported busses 0 - 3\n", bus);

5
drivers/spi/omap3_spi.h
View file

@ -30,10 +30,15 @@
#ifndef _OMAP3_SPI_H_
#define _OMAP3_SPI_H_
#ifdef CONFIG_AM33XX
#define OMAP3_MCSPI1_BASE 0x48030100
#define OMAP3_MCSPI2_BASE 0x481A0100
#else
#define OMAP3_MCSPI1_BASE 0x48098000
#define OMAP3_MCSPI2_BASE 0x4809A000
#define OMAP3_MCSPI3_BASE 0x480B8000
#define OMAP3_MCSPI4_BASE 0x480BA000
#endif
#define OMAP3_MCSPI_MAX_FREQ 48000000