[edk2-devel] [edk2-platforms][PATCH v1 2/2] Platform/RaspberryPi: Add analog audio device in ACPI

[Mario Bălănică]

The Windows audio driver now binds to this device.

Signed-off-by: Mario Bălănică <mariobalanica02 at gmail.com>
---
 Platform/RaspberryPi/AcpiTables/GpuDevs.asl | 28 ++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/Platform/RaspberryPi/AcpiTables/GpuDevs.asl b/Platform/RaspberryPi/AcpiTables/GpuDevs.asl
index b499620e089a..734547e5a806 100644
--- a/Platform/RaspberryPi/AcpiTables/GpuDevs.asl
+++ b/Platform/RaspberryPi/AcpiTables/GpuDevs.asl
@@ -440,6 +440,34 @@ Device (PWM1)
 }

 #endif

 

+// Analog Audio (PWM-driven)

+Device (AAUD)

+{

+  Name (_HID, "RPI73EA")

+#if (RPI_MODEL == 3)

+  Name (_DEP, Package() { \_SB.GDV0.PWM0 })

+#elif (RPI_MODEL == 4)

+  Name (_DEP, Package() { \_SB.GDV0.PWM1 })

+#endif

+  Method (_STA)

+  {

+    Return (0xf)

+  }

+  Name (_DSD, Package () {

+    ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),

+    Package () {

+      Package () { "pwm-clock-source", "plld" },

+#if (RPI_MODEL == 3)

+      Package () { "pwm-clock-source-frequency", 500000000 },

+      Package () { "pwm-clock-max-frequency", 125000000 }, // higher may work, but it's untested

+#elif (RPI_MODEL == 4)

+      Package () { "pwm-clock-source-frequency", 750000000 },

+      Package () { "pwm-clock-max-frequency", 375000000 },

+#endif

+    }

+  })

+}

+

 include ("Uart.asl")

 include ("Rhpx.asl")

 include ("Sdhc.asl")

-- 
2.29.2.windows.2



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