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author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2012-06-11 08:51:32 +0200 |
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committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2012-06-15 15:59:33 +0200 |
commit | f7deb58df032f5796769b066a2d796348b04dd55 (patch) | |
tree | 381428123beff3f16f8dacfb87e5bc635b5915d6 /c/src/lib/libbsp/arm/lpc24xx/startup/start-config-emc-static.c | |
parent | bsp/lpc24xx: New BSP variants (PLX800 on LPC1778) (diff) | |
download | rtems-f7deb58df032f5796769b066a2d796348b04dd55.tar.bz2 |
bsp/lpc24xx: Simplify EMC configuration
Diffstat (limited to '')
-rw-r--r-- | c/src/lib/libbsp/arm/lpc24xx/startup/start-config-emc-static.c | 52 |
1 files changed, 26 insertions, 26 deletions
diff --git a/c/src/lib/libbsp/arm/lpc24xx/startup/start-config-emc-static.c b/c/src/lib/libbsp/arm/lpc24xx/startup/start-config-emc-static.c index f8fa4eff6e..f42b74aec1 100644 --- a/c/src/lib/libbsp/arm/lpc24xx/startup/start-config-emc-static.c +++ b/c/src/lib/libbsp/arm/lpc24xx/startup/start-config-emc-static.c @@ -65,7 +65,7 @@ BSP_START_DATA_SECTION const lpc24xx_emc_static_chip_config } } #elif defined(LPC24XX_EMC_M29W320E70) - /* Static Memory 0: M29W320E70 at 51612800Hz (tCK = 19.4ns) */ + /* Static Memory 0: M29W320E70 */ { .chip_select = (volatile lpc_emc_static *) EMC_STA_BASE_0, .config = { @@ -75,27 +75,27 @@ BSP_START_DATA_SECTION const lpc24xx_emc_static_chip_config */ .config = 0x81, - /* (n + 1) clock cycles -> 38.8ns >= 30ns (tWHWL) */ - .waitwen = 1, + /* 30ns (tWHWL) */ + .waitwen = LPC24XX_PS_TO_EMCCLK(30000, 1), - /* (n + 1) clock cycles -> 19.4ns >= 0ns */ - .waitoen = 0, + /* 0ns */ + .waitoen = LPC24XX_PS_TO_EMCCLK(0, 1), - /* (n + 1) clock cycles -> 77.5ns >= 70ns (tAVQV, tELQV) */ - .waitrd = 3, + /* 70ns (tAVQV, tELQV) */ + .waitrd = LPC24XX_PS_TO_EMCCLK(70000, 1), - /* (n + 1) clock cycles -> 77.5ns >= 70ns (tAVQV, tELQV) */ - .waitpage = 3, + /* 70ns (tAVQV, tELQV) */ + .waitpage = LPC24XX_PS_TO_EMCCLK(70000, 1), - /* (n + 2) clock cycles -> 58.1ns >= 45ns (tWLWH) */ - .waitwr = 1, + /* 45ns (tWLWH) */ + .waitwr = LPC24XX_PS_TO_EMCCLK(45000, 2), - /* (n + 1) clock cycles -> 38.8ns >= 25ns (tEHQZ) */ - .waitrun = 1 + /* 25ns (tEHQZ) */ + .waitrun = LPC24XX_PS_TO_EMCCLK(25000, 1) } } #elif defined(LPC24XX_EMC_SST39VF3201) - /* Static Memory 0: SST39VF3201 at 51612800Hz (tCK = 19.4ns) */ + /* Static Memory 0: SST39VF3201 */ { .chip_select = (volatile lpc_emc_static *) EMC_STA_BASE_0, .config = { @@ -105,23 +105,23 @@ BSP_START_DATA_SECTION const lpc24xx_emc_static_chip_config */ .config = 0x81, - /* (n + 1) clock cycles -> 19.4ns >= 0ns (tCS, tAS) */ - .waitwen = 0, + /* 0ns (tCS, tAS) */ + .waitwen = LPC24XX_PS_TO_EMCCLK(0, 1), - /* (n + 1) clock cycles -> 19.4ns >= 0ns (tOES) */ - .waitoen = 0, + /* 0ns (tOES) */ + .waitoen = LPC24XX_PS_TO_EMCCLK(0, 1), - /* (n + 1) clock cycles -> 77.5ns >= 70ns (tRC) */ - .waitrd = 2, + /* 70ns (tRC) */ + .waitrd = LPC24XX_PS_TO_EMCCLK(70000, 1), - /* (n + 1) clock cycles -> 77.5ns >= 70ns (tRC) */ - .waitpage = 2, + /* 70ns (tRC) */ + .waitpage = LPC24XX_PS_TO_EMCCLK(70000, 1), - /* (n + 2) clock cycles -> 38.8ns >= 20ns (tCHZ, TOHZ) */ - .waitwr = 0, + /* 20ns (tCHZ, TOHZ) */ + .waitwr = LPC24XX_PS_TO_EMCCLK(20000, 2), - /* (n + 1) clock cycles -> 38.8ns >= 20ns (tCHZ, TOHZ) */ - .waitrun = 1 + /* 20ns (tCHZ, TOHZ) */ + .waitrun = LPC24XX_PS_TO_EMCCLK(20000, 1) } } #endif |