[PATCH V3 1/3] arm64: dts: sc7280: Add QSPI node

Roja Rani Yarubandi
2021-06-04T13:55:28Z

Add QSPI DT node for SC7280 SoC.

Signed-off-by: Roja Rani Yarubandi <rojay@codeaurora.org>
---
Changes in V3:
- Broken the huge V2 patch into 3 smaller patches.
1. QSPI DT nodes
2. QUP wrapper_0 DT nodes
3. QUP wrapper_1 DT nodes

Changes in V2:
- As per Doug's comments removed pinmux/pinconf subnodes.
- As per Doug's comments split of SPI, UART nodes has been done.
- Moved QSPI node before aps_smmu as per the order.

arch/arm64/boot/dts/qcom/sc7280-idp.dts | 29 ++++++++++++
arch/arm64/boot/dts/qcom/sc7280.dtsi | 61 +++++++++++++++++++++++++
2 files changed, 90 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sc7280-idp.dts b/arch/arm64/boot/dts/qcom/sc7280-idp.dts
index 3900cfc09562..d0edffc15736 100644
--- a/arch/arm64/boot/dts/qcom/sc7280-idp.dts
+++ b/arch/arm64/boot/dts/qcom/sc7280-idp.dts
@@ -268,6 +268,22 @@ pmr735b_die_temp {
};
};

+&qspi {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <&qspi_clk>, <&qspi_cs0>, <&qspi_data01>;
+
+ flash@0 {
+ compatible = "jedec,spi-nor";
+ reg = <0>;
+
+ /* TODO: Increase frequency after testing */
+ spi-max-frequency = <25000000>;
+ spi-tx-bus-width = <2>;
+ spi-rx-bus-width = <2>;
+ };
+};
+
&qupv3_id_0 {
status = "okay";
};
@@ -278,6 +294,19 @@ &uart5 {

/* PINCTRL - additions to nodes defined in sc7280.dtsi */

+&qspi_cs0 {
+ bias-disable;
+};
+
+&qspi_clk {
+ bias-disable;
+};
+
+&qspi_data01 {
+ /* High-Z when no transfers; nice to park the lines */
+ bias-pull-up;
+};
+
&qup_uart5_default {
tx {
pins = "gpio46";
diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi
index 6c9d5eb93f93..3047ab802cd2 100644
--- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
@@ -1061,6 +1061,42 @@ apss_merge_funnel_in: endpoint {
};
};

+ qspi_opp_table: qspi-opp-table {
+ compatible = "operating-points-v2";
+
+ opp-75000000 {
+ opp-hz = /bits/ 64 <75000000>;
+ required-opps = <&rpmhpd_opp_low_svs>;
+ };
+
+ opp-150000000 {
+ opp-hz = /bits/ 64 <150000000>;
+ required-opps = <&rpmhpd_opp_svs>;
+ };
+
+ opp-300000000 {
+ opp-hz = /bits/ 64 <300000000>;
+ required-opps = <&rpmhpd_opp_nom>;
+ };
+ };
+
+ qspi: spi@88dc000 {
+ compatible = "qcom,qspi-v1";
+ reg = <0 0x088dc000 0 0x1000>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ interrupts = <GIC_SPI 82 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&gcc GCC_QSPI_CNOC_PERIPH_AHB_CLK>,
+ <&gcc GCC_QSPI_CORE_CLK>;
+ clock-names = "iface", "core";
+ interconnects = <&gem_noc MASTER_APPSS_PROC 0
+ &cnoc2 SLAVE_QSPI_0 0>;
+ interconnect-names = "qspi-config";
+ power-domains = <&rpmhpd SC7280_CX>;
+ operating-points-v2 = <&qspi_opp_table>;
+ status = "disabled";
+ };
+
system-cache-controller@9200000 {
compatible = "qcom,sc7280-llcc";
reg = <0 0x09200000 0 0xd0000>, <0 0x09600000 0 0x50000>;
@@ -1186,6 +1222,31 @@ tlmm: pinctrl@f100000 {
gpio-ranges = <&tlmm 0 0 175>;
wakeup-parent = <&pdc>;

+ qspi_clk: qspi-clk {
+ pins = "gpio14";
+ function = "qspi_clk";
+ };
+
+ qspi_cs0: qspi-cs0 {
+ pins = "gpio15";
+ function = "qspi_cs";
+ };
+
+ qspi_cs1: qspi-cs1 {
+ pins = "gpio19";
+ function = "qspi_cs";
+ };
+
+ qspi_data01: qspi-data01 {
+ pins = "gpio12", "gpio13";
+ function = "qspi_data";
+ };
+
+ qspi_data12: qspi-data12 {
+ pins = "gpio16", "gpio17";
+ function = "qspi_data";
+ };
+
qup_uart5_default: qup-uart5-default {
pins = "gpio46", "gpio47";
function = "qup13";
--
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