chumby8: enable DMA

This is step 1 in preparation for getting sound working. DMA has now been tested with the touchscreen and it works. Currently a bunch of IRQ errors relating to the DMA controller will be printed at startup. These errors are harmless. I'll try to figure out how to suppress them soon.
dougg3 · Aug 10, 2022 · 0fc2cd8 · 0fc2cd8
1 parent edb5337
commit 0fc2cd8
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diff --git a/board/chumby/chumby8/linux.config b/board/chumby/chumby8/linux.config
@@ -74,6 +74,8 @@ CONFIG_MMC_SDHCI_PLTFM=y
 CONFIG_MMC_SDHCI_PXAV2=y
 CONFIG_RTC_CLASS=y
 CONFIG_RTC_DRV_SA1100=y
+CONFIG_DMADEVICES=y
+CONFIG_PXA_DMA=y
 CONFIG_PWM=y
 CONFIG_PWM_PXA=y
 # CONFIG_RESET_CONTROLLER is not set

diff --git a/board/chumby/chumby8/pxa168-chumby8.dts b/board/chumby/chumby8/pxa168-chumby8.dts
@@ -87,6 +87,10 @@
 	};
 };
 
+&dma {
+	status = "okay";
+};
+
 &uart1 {
 	status = "okay";
 };