2019-04-24 15:42:14

by Alan Tull

Subject: [PATCH 1/2] ARM: dts: socfpga: add ltc2497 on arria10 devkit

Add the two ltc2497 devices that are on the SoCFPGA Arria10
Socdk board at addresses 0x14 and 0x16.

Signed-off-by: Alan Tull <[email protected]>
---
arch/arm/boot/dts/socfpga_arria10_socdk.dtsi | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)

diff --git a/arch/arm/boot/dts/socfpga_arria10_socdk.dtsi b/arch/arm/boot/dts/socfpga_arria10_socdk.dtsi
index 360dae5a5b12..0efbeccc5cd2 100644
--- a/arch/arm/boot/dts/socfpga_arria10_socdk.dtsi
+++ b/arch/arm/boot/dts/socfpga_arria10_socdk.dtsi
@@ -48,6 +48,13 @@
};
};

+ ref_033v: 033-v-ref {
+ compatible = "regulator-fixed";
+ regulator-name = "0.33V";
+ regulator-min-microvolt = <330000>;
+ regulator-max-microvolt = <330000>;
+ };
+
soc {
clkmgr@ffd04000 {
clocks {
@@ -128,6 +135,18 @@
i2c-sda-falling-time-ns = <6000>;
i2c-scl-falling-time-ns = <6000>;

+ adc@14 {
+ compatible = "lltc,ltc2497";
+ reg = <0x14>;
+ vref-supply = <&ref_033v>;
+ };
+
+ adc@16 {
+ compatible = "lltc,ltc2497";
+ reg = <0x16>;
+ vref-supply = <&ref_033v>;
+ };
+
eeprom@51 {
compatible = "atmel,24c32";
reg = <0x51>;
--
2.21.0

2019-04-24 21:55:09

by Alan Tull

Subject: [PATCH 2/2] ARM: socfpga_defconfig: enable LTC2497

Enable the LTC2497 driver to support the two LTC2497's that are on
the SoCFPGA Arria10 Devkit.

Signed-off-by: Alan Tull <[email protected]>
---
arch/arm/configs/socfpga_defconfig | 2 ++
1 file changed, 2 insertions(+)

diff --git a/arch/arm/configs/socfpga_defconfig b/arch/arm/configs/socfpga_defconfig
index 08d1b3e11d68..cfc447161c09 100644
--- a/arch/arm/configs/socfpga_defconfig
+++ b/arch/arm/configs/socfpga_defconfig
@@ -127,6 +127,8 @@ CONFIG_RTC_DRV_DS1307=y
CONFIG_DMADEVICES=y
CONFIG_PL330_DMA=y
CONFIG_DMATEST=m
+CONFIG_IIO=y
+CONFIG_LTC2497=y
CONFIG_FPGA=y
CONFIG_FPGA_MGR_SOCFPGA=y
CONFIG_FPGA_MGR_SOCFPGA_A10=y
--
2.21.0