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authorÁlvaro Fernández Rojas <noltari@gmail.com>2021-02-18 18:04:33 +0100
committerÁlvaro Fernández Rojas <noltari@gmail.com>2021-02-18 23:42:32 +0100
commitf07e572f6447465d8938679533d604e402b0f066 (patch)
treecb333bd2a67e59e7c07659514850a0fd55fc825e /target/linux/bcm27xx/patches-5.4/950-0954-media-bcm2835-unicam-Drop-WARN-on-uing-direct-cache-.patch
parent5d3a6fd970619dfc55f8259035c3027d7613a2a6 (diff)
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bcm27xx: import latest patches from the RPi foundation
bcm2708: boot tested on RPi B+ v1.2 bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G bcm2710: boot tested on RPi 3B v1.2 bcm2711: boot tested on RPi 4B v1.1 4G Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0954-media-bcm2835-unicam-Drop-WARN-on-uing-direct-cache-.patch')
-rw-r--r--target/linux/bcm27xx/patches-5.4/950-0954-media-bcm2835-unicam-Drop-WARN-on-uing-direct-cache-.patch34
1 files changed, 34 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0954-media-bcm2835-unicam-Drop-WARN-on-uing-direct-cache-.patch b/target/linux/bcm27xx/patches-5.4/950-0954-media-bcm2835-unicam-Drop-WARN-on-uing-direct-cache-.patch
new file mode 100644
index 0000000000..481c55b649
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0954-media-bcm2835-unicam-Drop-WARN-on-uing-direct-cache-.patch
@@ -0,0 +1,34 @@
+From d535074e3e2c08ba5a6b627e54f4597f0f6f9240 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 27 Aug 2020 16:30:26 +0100
+Subject: [PATCH] media: bcm2835-unicam: Drop WARN on uing direct
+ cache alias
+
+Pi 0&1 pass all ARM accesses through the VPU L2 cache, therefore
+the dma-ranges property sets the cache alias bits to other
+than the direct alias, hence this WARN was firing.
+
+It was overprotective coding, so assume that everything is OK
+with the dma-ranges, and remove the WARN.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/platform/bcm2835/bcm2835-unicam.c | 7 -------
+ 1 file changed, 7 deletions(-)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -708,13 +708,6 @@ static void unicam_wr_dma_addr(struct un
+ {
+ dma_addr_t endaddr = dmaaddr + buffer_size;
+
+- /*
+- * dmaaddr and endaddr should be a 32-bit address with the top two bits
+- * set to 0x3 to signify uncached access through the Videocore memory
+- * controller.
+- */
+- WARN_ON((dmaaddr >> 30) != 0x3 || (endaddr >> 30) != 0x3);
+-
+ if (pad_id == IMAGE_PAD) {
+ reg_write(dev, UNICAM_IBSA0, dmaaddr);
+ reg_write(dev, UNICAM_IBEA0, endaddr);