Author: manu
Date: Thu May 31 15:41:56 2018
New Revision: 334436
URL: https://svnweb.freebsd.org/changeset/base/334436
Log:
aw_mmc: Get max-frequency from the dtb
If a max-frequency is supplied in the dtb use it, otherwise fallback to a
default one of 52Mhz.
Modified:
head/sys/arm/allwinner/aw_mmc.c
Modified: head/sys/arm/allwinner/aw_mmc.c
==============================================================================
--- head/sys/arm/allwinner/aw_mmc.c Thu May 31 15:41:00 2018
(r334435)
+++ head/sys/arm/allwinner/aw_mmc.c Thu May 31 15:41:56 2018
(r334436)
@@ -182,7 +182,7 @@ aw_mmc_attach(device_t dev)
struct aw_mmc_softc *sc;
struct sysctl_ctx_list *ctx;
struct sysctl_oid_list *tree;
- uint32_t bus_width;
+ uint32_t bus_width, max_freq;
phandle_t node;
int error;
@@ -277,7 +277,12 @@ aw_mmc_attach(device_t dev)
}
sc->aw_host.f_min = 400000;
- sc->aw_host.f_max = 52000000;
+
+ if (OF_getencprop(node, "max-frequency", &max_freq,
+ sizeof(uint32_t)) <= 0)
+ max_freq = 52000000;
+ sc->aw_host.f_max = max_freq;
+
sc->aw_host.host_ocr = MMC_OCR_320_330 | MMC_OCR_330_340;
sc->aw_host.caps = MMC_CAP_HSPEED | MMC_CAP_UHS_SDR12 |
MMC_CAP_UHS_SDR25 | MMC_CAP_UHS_SDR50 |
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