[PATCH 2/3] arm64: dts: ti: k3-j721s2-main: Add Itap Delay Value For DDR50 speed mode

Bhavya Kapoor posted 3 patches 2 years ago
[PATCH 2/3] arm64: dts: ti: k3-j721s2-main: Add Itap Delay Value For DDR50 speed mode
Posted by Bhavya Kapoor 2 years ago
DDR50 speed mode is enabled for MMCSD in J721s2 but its Itap Delay
Value is not present in the device tree. Thus, add Itap Delay Value
for MMCSD High Speed DDR which is DDR50 speed mode for J721s2 SoC
according to datasheet for J721s2.

[+] Refer to : section 7.10.5.17.2 MMC1/2 - SD/SDIO Interface,  in
	J721s2 datasheet
- https://www.ti.com/lit/ds/symlink/tda4vl-q1.pdf

Signed-off-by: Bhavya Kapoor <b-kapoor@ti.com>
---
 arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi b/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi
index b03731b53a26..e1255956288b 100644
--- a/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi
@@ -766,6 +766,7 @@ main_sdhci1: mmc@4fb0000 {
 		ti,itap-del-sel-sd-hs = <0x0>;
 		ti,itap-del-sel-sdr12 = <0x0>;
 		ti,itap-del-sel-sdr25 = <0x0>;
+		ti,itap-del-sel-ddr50 = <0x2>;
 		ti,clkbuf-sel = <0x7>;
 		ti,trm-icp = <0x8>;
 		dma-coherent;
-- 
2.34.1
Re: [PATCH 2/3] arm64: dts: ti: k3-j721s2-main: Add Itap Delay Value For DDR50 speed mode
Posted by Judith Mendez 2 years ago
Hi Bhavya,

On 12/1/23 2:20 AM, Bhavya Kapoor wrote:
> DDR50 speed mode is enabled for MMCSD in J721s2 but its Itap Delay
> Value is not present in the device tree. Thus, add Itap Delay Value
> for MMCSD High Speed DDR which is DDR50 speed mode for J721s2 SoC
> according to datasheet for J721s2.
> 
> [+] Refer to : section 7.10.5.17.2 MMC1/2 - SD/SDIO Interface,  in
> 	J721s2 datasheet
> - https://www.ti.com/lit/ds/symlink/tda4vl-q1.pdf
> 

LGTM

Reviewed-by: Judith Mendez <jm@ti.com>

> Signed-off-by: Bhavya Kapoor <b-kapoor@ti.com>
> ---
>   arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi b/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi
> index b03731b53a26..e1255956288b 100644
> --- a/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi
> @@ -766,6 +766,7 @@ main_sdhci1: mmc@4fb0000 {
>   		ti,itap-del-sel-sd-hs = <0x0>;
>   		ti,itap-del-sel-sdr12 = <0x0>;
>   		ti,itap-del-sel-sdr25 = <0x0>;
> +		ti,itap-del-sel-ddr50 = <0x2>;
>   		ti,clkbuf-sel = <0x7>;
>   		ti,trm-icp = <0x8>;
>   		dma-coherent;

~ Judith