Add QPIC SPI NAND support for IPQ5424 and IPQ5332 platforms

[PATCH 8/9] arm64: dts: qcom: ipq5424: Remove eMMC support

Posted by Md Sadre Alam 1 week, 6 days ago

Remove eMMC support from the IPQ5424 RDP466 board configuration to
resolve GPIO pin conflicts with SPI NAND interface.

The IPQ5424 RDP466 board is designed with NOR + NAND as the default boot
mode configuration. The eMMC controller and SPI NAND controller share
the same GPIO pins, creating a hardware conflict:

Signed-off-by: Md Sadre Alam <quic_mdalam@quicinc.com>
---
 arch/arm64/boot/dts/qcom/ipq5424-rdp466.dts | 30 ---------------------
 1 file changed, 30 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/ipq5424-rdp466.dts b/arch/arm64/boot/dts/qcom/ipq5424-rdp466.dts
index accb15b0d742..347659d4f551 100644
--- a/arch/arm64/boot/dts/qcom/ipq5424-rdp466.dts
+++ b/arch/arm64/boot/dts/qcom/ipq5424-rdp466.dts
@@ -124,13 +124,6 @@ &qusb_phy_1 {
 	status = "okay";
 };
 
-&sdhc {
-	pinctrl-0 = <&sdc_default_state>;
-	pinctrl-names = "default";
-
-	status = "okay";
-};
-
 &sleep_clk {
 	clock-frequency = <32000>;
 };
@@ -201,29 +194,6 @@ mosi-pins {
 		};
 	};
 
-	sdc_default_state: sdc-default-state {
-		clk-pins {
-			pins = "gpio5";
-			function = "sdc_clk";
-			drive-strength = <8>;
-			bias-disable;
-		};
-
-		cmd-pins {
-			pins = "gpio4";
-			function = "sdc_cmd";
-			drive-strength = <8>;
-			bias-pull-up;
-		};
-
-		data-pins {
-			pins = "gpio0", "gpio1", "gpio2", "gpio3";
-			function = "sdc_data";
-			drive-strength = <8>;
-			bias-pull-up;
-		};
-	};
-
 	qpic_snand_default_state: qpic-snand-default-state {
 		clock-pins {
 			pins = "gpio5";
-- 
2.34.1

Re: [PATCH 8/9] arm64: dts: qcom: ipq5424: Remove eMMC support

Posted by Konrad Dybcio 1 week, 6 days ago

On 9/18/25 11:40 AM, Md Sadre Alam wrote:
> Remove eMMC support from the IPQ5424 RDP466 board configuration to
> resolve GPIO pin conflicts with SPI NAND interface.
> 
> The IPQ5424 RDP466 board is designed with NOR + NAND as the default boot
> mode configuration. The eMMC controller and SPI NAND controller share
> the same GPIO pins, creating a hardware conflict:
> 
> Signed-off-by: Md Sadre Alam <quic_mdalam@quicinc.com>
> ---

The subject should contain the board name, i.e.:

arm64: dts: qcom: ipq5424-rdp466: xxx

same for patch 9

Konrad

Re: [PATCH 8/9] arm64: dts: qcom: ipq5424: Remove eMMC support

Posted by Md Sadre Alam 1 week, 6 days ago


On 9/18/2025 6:16 PM, Konrad Dybcio wrote:
> On 9/18/25 11:40 AM, Md Sadre Alam wrote:
>> Remove eMMC support from the IPQ5424 RDP466 board configuration to
>> resolve GPIO pin conflicts with SPI NAND interface.
>>
>> The IPQ5424 RDP466 board is designed with NOR + NAND as the default boot
>> mode configuration. The eMMC controller and SPI NAND controller share
>> the same GPIO pins, creating a hardware conflict:
>>
>> Signed-off-by: Md Sadre Alam <quic_mdalam@quicinc.com>
>> ---
> 
> The subject should contain the board name, i.e.:
> 
> arm64: dts: qcom: ipq5424-rdp466: xxx
Ok, will add in next revision.
> 
> same for patch 9
ok

Re: [PATCH 8/9] arm64: dts: qcom: ipq5424: Remove eMMC support

Posted by Konrad Dybcio 1 week, 6 days ago

On 9/18/25 2:46 PM, Konrad Dybcio wrote:
> On 9/18/25 11:40 AM, Md Sadre Alam wrote:
>> Remove eMMC support from the IPQ5424 RDP466 board configuration to
>> resolve GPIO pin conflicts with SPI NAND interface.
>>
>> The IPQ5424 RDP466 board is designed with NOR + NAND as the default boot
>> mode configuration. The eMMC controller and SPI NAND controller share
>> the same GPIO pins, creating a hardware conflict:
>>
>> Signed-off-by: Md Sadre Alam <quic_mdalam@quicinc.com>
>> ---
> 
> The subject should contain the board name, i.e.:
> 
> arm64: dts: qcom: ipq5424-rdp466: xxx
> 
> same for patch 9

(and for patches 6-7)

Konrad