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| author |   Christoph Muellner <christoph.muellner@theobroma-systems.com> | 2019-03-22 12:34:53 +0100 |
|---|---|---|
| committer |   Heiko Stuebner <heiko@sntech.de> | 2019-03-27 13:45:27 +0100 |
| commit | b4e1728232d64b8040dae9b5405cf2db7ebd4e8b (patch) | |
| tree | c9962ce3cb5160170621c03d183bfb98af4e8049 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | arm64: dts: rockchip: Define drive-impedance-ohm for RK3399's emmc-phy. (diff) | |
| download | wireguard-linux-b4e1728232d64b8040dae9b5405cf2db7ebd4e8b.tar.xz wireguard-linux-b4e1728232d64b8040dae9b5405cf2db7ebd4e8b.zip | |
arm64: dts: rockchip: Decrease emmc-phy's drive impedance on rk3399-puma
The RK3399-Q7 (Puma) requires 33 Ohm drive strength to ensure signal
integrity at HS-400 (200MHz clock, DDR signalling).
A repeated EMC testing run validates that this increase does not
negatively impact EMC compliance (emissions have ample distance to
the regulatory limits).
Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com>
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Tested-by: Jakob Unterwurzacher <jakob.unterwurzacher@theobroma-systems.com>
Tested-by: Klaus Goger <klaus.goger@theobroma-systems.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions