Date: Sat, 17 Feb 2018 18:30:25 +0000 (UTC) From: Emmanuel Vadot <manu@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r329463 - head/sys/arm/allwinner Message-ID: <201802171830.w1HIUPKb078725@repo.freebsd.org>
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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);
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