[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-ID: <20230920094130.20279-1-b-kapoor@ti.com>
Date: Wed, 20 Sep 2023 15:11:30 +0530
From: Bhavya Kapoor <b-kapoor@...com>
To: <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>
CC: <nm@...com>, <vigneshr@...com>, <kristo@...nel.org>,
<robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
<conor+dt@...nel.org>, <linux-arm-kernel@...ts.infradead.org>,
<a-govindraju@...com>, <kishon@...com>, <b-kapoor@...com>,
<u-kumar1@...com>
Subject: [PATCH v3] arm64: dts: ti: k3-j721s2-main: Enable support for SDR104 speed mode
According to TRM for J721S2, SDR104 speed mode is supported by the SoC
but its capabilities were masked in device tree. Remove sdhci-caps-mask
to enable support for SDR104 speed mode for SD card in J721S2 SoC. Also
add itap delay select value for DDR50 High Speed Mode.
[+] Refer to : section 12.3.6.1.1 MMCSD Features, in J721S2 TRM
- https://www.ti.com/lit/zip/spruj28
Fixes: b8545f9d3a54 ("arm64: dts: ti: Add initial support for J721S2 SoC")
Signed-off-by: Bhavya Kapoor <b-kapoor@...com>
Reviewed-by: Udit Kumar <u-kumar1@...com>
---
Changelog v2->v3:
- Add Itap Delay Select value for DDR50 SD High Speed Mode
Link to v2 patch : https://lore.kernel.org/all/20230412121415.860447-1-b-kapoor@ti.com/
arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi b/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi
index 084f8f5b6699..a5ab301b14f1 100644
--- a/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi
@@ -766,11 +766,10 @@ main_sdhci1: mmc@...0000 {
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;
- /* Masking support for SDR104 capability */
- sdhci-caps-mask = <0x00000003 0x00000000>;
status = "disabled";
};
--
2.39.2
Powered by blists - more mailing lists