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arch/arm/src/imxrt/imxrt_usdhc.c: Move some comments.

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Dave Marples 2019-09-21 07:26:49 -06:00 committed by Gregory Nutt
parent 05bbbec3e1
commit 62fca7c376
1 changed files with 11 additions and 7 deletions
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18
arch/arm/src/imxrt/imxrt_usdhc.c
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@ -2011,13 +2011,8 @@ static int imxrt_sendcmd(FAR struct sdio_dev_s *dev, uint32_t cmd,
mcinfo("cmd: %08x arg: %08x regval: %08x mcrval: %08x\n", cmd, arg,
regval, mcrregval);
/* The Command Inhibit (CIHB) bit is set in the PRSSTAT bit immediately
* after the transfer type register is written. This bit is cleared
* when the command response is received. If this status bit is 0, it
* indicates that the CMD line is not in use and the USDHC can issue a
* SD/MMC Command using the CMD line. CIHB should always be clear before
* this function is called, but this check is performed here to provide
* overlap and maximum performance.
/* If there has been a response error then perform a reset and wait for it
* to complete.
*/
if ((getreg32(priv->addr + IMXRT_USDHC_IRQSTAT_OFFSET) & USDHC_RESPERR_INTS) != 0)
@ -2029,6 +2024,15 @@ static int imxrt_sendcmd(FAR struct sdio_dev_s *dev, uint32_t cmd,
}
}
/* The Command Inhibit (CIHB) bit is set in the PRSSTAT bit immediately
* after the transfer type register is written. This bit is cleared
* when the command response is received. If this status bit is 0, it
* indicates that the CMD line is not in use and the USDHC can issue a
* SD/MMC Command using the CMD line. CIHB should always be clear before
* this function is called, but this check is performed here to provide
* overlap and maximum performance.
*/
timeout = USDHC_CMDTIMEOUT;
start = clock_systimer();
while ((getreg32(priv->addr + IMXRT_USDHC_PRSSTAT_OFFSET) &