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nxphlite-v3:SDHC setting is for EMI issue with GPS and FCC (#11029) 

This updating of the driver setting is for EMI issue with GPS and FCC.
   With this setting the clock is sinusoidal

   N.B. sd_bench fails on SanDISK HC, but Passes SanDISK **HC1** and
   Kingston cards.

   ****Use HC1 or Kingston cards!***

   Testing done on SanDISK HC all failed sd_bench with Drive/Slew other
   than default and _PIN_OUTPUT_FAST|_PIN_OUTPUT_HIGHDRIVE

	_PIN_OUTPUT_FAST|_PIN_OUTPUT_HIGHDRIVE    Square noisy, pass SanDISK HC
        _PIN_OUTPUT_FAST|_PIN_OUTPUT_LOWDRIVE     Square noisy, pass SanDISK HC
        _PIN_OUTPUT_HIGHDRIVE|_PIN_OUTPUT_SLOW    sinusoidal fail SanDISK HC, pass SanDISK HC1
        _PIN_OUTPUT_LOWDRIVE |_PIN_OUTPUT_SLOW    sinusoidal fail SanDISK HC, pass SanDISK HC1
                              _PIN_OUTPUT_SLOW    sinusoidal fail SanDISK HC, pass SanDISK HC1
This commit is contained in:
David Sidrane 2018-12-12 17:51:57 -08:00 committed by Daniel Agar
parent 11f9925b02
commit 53bc357cda
1 changed files with 13 additions and 0 deletions
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13
boards/nxp/fmuk66-v3/src/sdhc.c
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@ -184,6 +184,19 @@ int fmuk66_sdhc_initialize(void)
return -ENODEV;
}
// Testing done on SanDISK HC all failed sd_bench with Drive/Slew other than default and _PIN_OUTPUT_FAST|_PIN_OUTPUT_HIGHDRIVE
// _PIN_OUTPUT_FAST|_PIN_OUTPUT_HIGHDRIVE Square noisy, pass SanDISK HC
// _PIN_OUTPUT_FAST|_PIN_OUTPUT_LOWDRIVE Square noisy, pass SanDISK HC
// _PIN_OUTPUT_HIGHDRIVE|_PIN_OUTPUT_SLOW sinusoidal fail SanDISK HC pass SanDISK HC1
// _PIN_OUTPUT_LOWDRIVE|_PIN_OUTPUT_SLOW sinusoidal fail SanDISK HC pass SanDISK HC1
// _PIN_OUTPUT_SLOW sinusoidal fail SanDISK HC pass SanDISK HC1
// This up dating of the driver setting is for EMI issue with GPS and FCC
// With this setting the clock is sinusoidal N.B. sd_bench fails on SanDISK HC, but
// Passes SanDISK **HC1** - use HC1 or Kingston cards!
kinetis_pinconfig(PIN_SDHC0_DCLK | _PIN_OUTPUT_HIGHDRIVE | _PIN_OUTPUT_SLOW);
/* Now bind the SDHC interface to the MMC/SD driver */
mcinfo("Bind SDHC to the MMC/SD driver, minor=%d\n", CONFIG_NSH_MMCSDMINOR);