diff mbox series

[v2,4/5] ARM: dts: sun5i: Add port E pinmux settings for mmc2

Message ID 7949169f581cab37175602188f44bc26e79a45c0.1683719613.git.noodles@earth.li
State New
Headers
Series Minor device-tree additions for C.H.I.P |

Commit Message

Jonathan McDowell May 10, 2023, 12:02 p.m. UTC 
  These alternate pins for mmc2 are brought out to the 40 pin U14 header
on the C.H.I.P and can be used to add an external MMC device with a 4
bit interface. See

https://byteporter.com/ntc-chip-micro-sd-slot/

for further details on how.

Signed-off-by: Jonathan McDowell <noodles@earth.li>
---
 arch/arm/boot/dts/sun5i.dtsi | 9 +++++++++
 1 file changed, 9 insertions(+)

Comments

Jernej Škrabec May 11, 2023, 3:45 p.m. UTC | #1 
Dne sreda, 10. maj 2023 ob 14:02:02 CEST je Jonathan McDowell napisal(a):
> These alternate pins for mmc2 are brought out to the 40 pin U14 header
> on the C.H.I.P and can be used to add an external MMC device with a 4
> bit interface. See
> 
> https://byteporter.com/ntc-chip-micro-sd-slot/
> 
> for further details on how.
> 
> Signed-off-by: Jonathan McDowell <noodles@earth.li>

Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>

Best regards,
Jernej
diff mbox series

Patch

diff --git a/arch/arm/boot/dts/sun5i.dtsi b/arch/arm/boot/dts/sun5i.dtsi
index 250d6b87ab4d..ab7f675aeec4 100644
--- a/arch/arm/boot/dts/sun5i.dtsi
+++ b/arch/arm/boot/dts/sun5i.dtsi
@@ -517,6 +517,15 @@  mmc2_4bit_pc_pins: mmc2-4bit-pc-pins {
 				bias-pull-up;
 			};
 
+			/omit-if-no-ref/
+			mmc2_4bit_pe_pins: mmc2-4bit-pe-pins {
+				pins = "PE4", "PE5", "PE6", "PE7",
+				       "PE8", "PE9";
+				function = "mmc2";
+				drive-strength = <30>;
+				bias-pull-up;
+			};
+
 			mmc2_8bit_pins: mmc2-8bit-pins {
 				pins = "PC6", "PC7", "PC8", "PC9",
 				       "PC10", "PC11", "PC12", "PC13",