On 4/15/2019 6:35 AM, Tom Rini wrote:
On Mon, Apr 15, 2019 at 06:19:31AM +0530, keerthy wrote:
On 4/13/2019 6:32 PM, Tom Rini wrote:
On Fri, Apr 12, 2019 at 12:08:14PM +0530, Keerthy wrote:
The series adds the support for hardware leveling. This needs the kernel to be patched with hardware leveling support and the kernel support is already in linux-next:
https://patchwork.kernel.org/project/linux-omap/list/?series=100273
Match recommended values from EMIF Tools app note: http://www.ti.com/lit/an/sprac70/sprac70.pdf
What happens if you boot an old kernel with this series applied? I'm a bit worried about applying something that breaks existing kernels, thanks!
Hi Tom,
Deep Sleep 0 feature will fail as the corresponding hardware leveling patches will not be present.
So to be clear, some new functionality will not work, but there is no functional regression?
Okay i got your concern. Deep sleep 0 is currently working with software leveling that will stop working with this patch series(hardware leveling) applied on older kernels. EMIF tools application note recommends hardware leveling over what existed previously.
Hence i posted this series. Older kernels with this patch series Deep sleep 0 feature will regress.