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MdeModulePkg: Add bRefClkFreq card attribute programming support #2608

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merged 1 commit into from
Mar 10, 2022

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@hwu25 hwu25 commented Mar 10, 2022

Patch sent at: https://edk2.groups.io/g/devel/message/87349

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3851

When the UFS card comes out of Manufacturer, bRefClkFreq attribute is set
to 1h on the UFS card as per the Manufacturer Default Value
specified by the spec JESD220*. However, depends on the UFS host system
environment, it need to be set to the correct value.

Reference Clock Frequency value
0h:19.2 MHz
1h: 26 MHz
2h: 38.4 MHz
3h: Obsolete
Others: Reserved

Cc: Wu Hao A hao.a.wu@intel.com
Cc: Albecki Mateusz mateusz.albecki@intel.com
Cc: Liming Gao gaoliming@byosoft.com.cn
Cc: Zhiguang Liu zhiguang.liu@intel.com

Signed-off-by: Purna Chandra Rao Bandaru purna.chandra.rao.bandaru@intel.com
Reviewed-by: Hao A Wu hao.a.wu@intel.com

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3851

When the UFS card comes out of Manufacturer, bRefClkFreq attribute is set
to 1h on the UFS card as per the Manufacturer Default Value
specified by the spec JESD220*. However, depends on the UFS host system
environment, it need to be set to the correct value.

Reference Clock Frequency value
0h:19.2 MHz
1h: 26 MHz
2h: 38.4 MHz
3h: Obsolete
Others: Reserved

Cc: Wu Hao A <hao.a.wu@intel.com>
Cc: Albecki Mateusz <mateusz.albecki@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Zhiguang Liu <zhiguang.liu@intel.com>

Signed-off-by: Purna Chandra Rao Bandaru <purna.chandra.rao.bandaru@intel.com>
Reviewed-by: Hao A Wu <hao.a.wu@intel.com>
@hwu25 hwu25 added the push Auto push patch series in PR if all checks pass label Mar 10, 2022
@mergify mergify bot merged commit f06941c into tianocore:master Mar 10, 2022
@hwu25 hwu25 deleted the push_ufs_brefclkfreq branch August 30, 2022 06:28
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