On 10/17/2024 2:01 AM, Bryan Brattlof wrote:
Hi Vaishnav!
On October 16, 2024 thus sayeth Vaishnav Achath:
Add the latest 4000 MT/s DDR config generated by Jacinto7_DDRSS_RegConfigTool Rev 0.11 for J722S , make it the default config and update A53 default clock to 1.4 GHz matching the default speed grade (K).
Signed-off-by: Vaishnav Achath vaishnav.a@ti.com
memtester logs on J722S EVM: https://gist.github.com/vaishnavachath/4174d02e0338e53594015dfdd321a8ef The max frequency was not bumped up to 4000 MT/s initially since the characterization results were not available. All the devices populated on J722S EVM and Beagle Y AI is speed grade K.
arch/arm/dts/k3-j722s-ddr-lp4-50-4000.dtsi | 2797 ++++++++++++++++++++ arch/arm/dts/k3-j722s-r5-evm.dts | 4 +- 2 files changed, 2799 insertions(+), 2 deletions(-) create mode 100644 arch/arm/dts/k3-j722s-ddr-lp4-50-4000.dtsi
...
diff --git a/arch/arm/dts/k3-j722s-r5-evm.dts b/arch/arm/dts/k3-j722s-r5-evm.dts index aff83cd5d9..46f420d510 100644 --- a/arch/arm/dts/k3-j722s-r5-evm.dts +++ b/arch/arm/dts/k3-j722s-r5-evm.dts @@ -7,7 +7,7 @@ #include "k3-j722s-evm.dts" #include "k3-j722s-evm-u-boot.dtsi"
-#include "k3-j722s-ddr-lp4-50-3733.dtsi" +#include "k3-j722s-ddr-lp4-50-4000.dtsi"
Do we need to keep the 3733MT/s config around anymore?
I suggest to keep this, in case someone want to use lower grade SOC
then they can just change #include instead of doing regeneration of whole config
~Bryan