Author: manu
Date: Sat Feb 17 18:30:25 2018
New Revision: 329463
URL: https://svnweb.freebsd.org/changeset/base/329463
Log:
aw_mmc: Only change the clock if it has really changed
This also seems to fix problem when booting Pine64 from the mmc.
Tested On: Pine64
Tested On: Pine64-LTS
Modified:
head/sys/arm/allwinner/aw_mmc.c
Modified: head/sys/arm/allwinner/aw_mmc.c
==============================================================================
--- head/sys/arm/allwinner/aw_mmc.c Sat Feb 17 18:00:01 2018
(r329462)
+++ head/sys/arm/allwinner/aw_mmc.c Sat Feb 17 18:30:25 2018
(r329463)
@@ -117,6 +117,7 @@ struct aw_mmc_softc {
int32_t aw_vdd;
regulator_t aw_reg_vmmc;
regulator_t aw_reg_vqmmc;
+ unsigned int aw_clock;
/* Fields required for DMA access. */
bus_addr_t aw_dma_desc_phys;
@@ -939,8 +940,8 @@ aw_mmc_update_ios(device_t bus, device_t child)
reg &= ~AW_MMC_CTRL_DDR_MOD_SEL;
AW_MMC_WRITE_4(sc, AW_MMC_GCTL, reg);
- if (ios->clock) {
- clock = ios->clock;
+ if (ios->clock && ios->clock != sc->aw_clock) {
+ sc->aw_clock = clock = ios->clock;
/* Disable clock */
error = aw_mmc_update_clock(sc, 0);
_______________________________________________
svn-src-head@freebsd.org mailing list
https://lists.freebsd.org/mailman/listinfo/svn-src-head
To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
