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

Message ID 20231201082045.790478-3-b-kapoor@ti.com (mailing list archive)
State New, archived
Headers show
Series arm64: dts: ti: Add Itap Delay Value For High Speed DDR | expand

Commit Message

Bhavya Kapoor Dec. 1, 2023, 8:20 a.m. UTC
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(+)

Comments

Judith Mendez Dec. 5, 2023, 7:24 p.m. UTC | #1
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
diff mbox series

Patch

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;