remoteproc: qcom: Add SLPI rproc support to load and boot slpi proc.

This patch add slpi remoteproc support in existing adsp rproc driver.
Signed-off-by: NAvaneesh Kumar Dwivedi <akdwived@codeaurora.org>
[bjorn: documented aggre2 and px-supply]
Signed-off-by: NBjorn Andersson <bjorn.andersson@linaro.org>

Documentation/devicetree/bindings/remoteproc/qcom,adsp.txt

@@ -9,6 +9,7 @@ on the Qualcomm ADSP Hexagon core.
 	Definition: must be one of:
 		    "qcom,msm8974-adsp-pil"
 		    "qcom,msm8996-adsp-pil"
+		    "qcom,msm8996-slpi-pil"
 
 - interrupts-extended:
 	Usage: required
@@ -24,13 +25,13 @@ on the Qualcomm ADSP Hexagon core.
 - clocks:
 	Usage: required
 	Value type: <prop-encoded-array>
-	Definition: reference to the xo clock to be held on behalf of the
-		    booting Hexagon core
+	Definition: reference to the xo clock and optionally aggre2 clock to be
+		    held on behalf of the booting Hexagon core
 
 - clock-names:
 	Usage: required
 	Value type: <stringlist>
-	Definition: must be "xo"
+	Definition: must be "xo" and optionally include "aggre2"
 
 - cx-supply:
 	Usage: required
@@ -38,6 +39,12 @@ on the Qualcomm ADSP Hexagon core.
 	Definition: reference to the regulator to be held on behalf of the
 		    booting Hexagon core
 
+- px-supply:
+	Usage: required
+	Value type: <phandle>
+	Definition: reference to the px regulator to be held on behalf of the
+		    booting Hexagon core
+
 - memory-region:
 	Usage: required
 	Value type: <phandle>
@@ -96,3 +103,31 @@ ADSP, as it is found on MSM8974 boards.
 			qcom,smd-edge = <1>;
 		};
 	};
+
+The following example describes the resources needed to boot control the
+SLPI, as it is found on MSM8996 boards.
+
+	slpi {
+		compatible = "qcom,msm8996-slpi-pil";
+		interrupts-extended = <&intc 0 390 IRQ_TYPE_EDGE_RISING>,
+				      <&slpi_smp2p_in 0 IRQ_TYPE_EDGE_RISING>,
+				      <&slpi_smp2p_in 1 IRQ_TYPE_EDGE_RISING>,
+				      <&slpi_smp2p_in 2 IRQ_TYPE_EDGE_RISING>,
+				      <&slpi_smp2p_in 3 IRQ_TYPE_EDGE_RISING>;
+		interrupt-names = "wdog",
+				  "fatal",
+				  "ready",
+				  "handover",
+				  "stop-ack";
+
+		clocks = <&rpmcc MSM8996_RPM_SMD_XO_CLK_SRC>,
+		         <&rpmcc MSM8996_RPM_SMD_AGGR2_NOC_CLK>;
+		clock-names = "xo", "aggre2";
+
+		cx-supply = <&pm8994_l26>;
+		px-supply = <&pm8994_lvs2>;
+
+		memory-region = <&slpi_region>;
+		qcom,smem-states = <&slpi_smp2p_out 0>;
+		qcom,smem-state-names = "stop";
+        };

drivers/remoteproc/qcom_adsp_pil.c

 /*
- * Qualcomm ADSP Peripheral Image Loader for MSM8974 and MSM8996
+ * Qualcomm ADSP/SLPI Peripheral Image Loader for MSM8974 and MSM8996
  *
  * Copyright (C) 2016 Linaro Ltd
  * Copyright (C) 2014 Sony Mobile Communications AB
@@ -459,9 +459,17 @@ static const struct adsp_data adsp_resource_init = {
 		.has_aggre2_clk = false,
 };
 
+static const struct adsp_data slpi_resource_init = {
+		.crash_reason_smem = 424,
+		.firmware_name = "slpi.mdt",
+		.pas_id = 12,
+		.has_aggre2_clk = true,
+};
+
 static const struct of_device_id adsp_of_match[] = {
 	{ .compatible = "qcom,msm8974-adsp-pil", .data = &adsp_resource_init},
 	{ .compatible = "qcom,msm8996-adsp-pil", .data = &adsp_resource_init},
+	{ .compatible = "qcom,msm8996-slpi-pil", .data = &slpi_resource_init},
 	{ },
 };
 MODULE_DEVICE_TABLE(of, adsp_of_match);