[PATCH 2/2] staging: tidspbridge: detect wdt3 feature at runtime

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



In order to detect WDT feature on the dsp code, we need to
find the symbol used to enable it inside the baseimage.

This should fix the warning comming from L3 driver:

    WARNING: at arch/arm/mach-omap2/omap_l3_smx.c:161 omap3_l3_app_irq...
    In-band Error seen by IVA_SS  at address 0
    ...

That occurs because the dsp tries to access wdt3 registers when the clock
for those registers is not enabled.

Reported-by: Felipe Contreras <felipe.contreras@xxxxxxxxx>
Signed-off-by: Omar Ramirez Luna <omar.ramirez@xxxxxx>
---
 drivers/staging/tidspbridge/core/tiomap3430.c |   10 +++++++---
 1 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/tidspbridge/core/tiomap3430.c b/drivers/staging/tidspbridge/core/tiomap3430.c
index 670de0a..7862513 100644
--- a/drivers/staging/tidspbridge/core/tiomap3430.c
+++ b/drivers/staging/tidspbridge/core/tiomap3430.c
@@ -383,6 +383,7 @@ static int bridge_brd_start(struct bridge_dev_context *dev_ctxt,
 	u32 clk_cmd;
 	struct io_mgr *hio_mgr;
 	u32 ul_load_monitor_timer;
+	u32 wdt_en = 0;
 	struct omap_dsp_platform_data *pdata =
 		omap_dspbridge_dev->dev.platform_data;
 
@@ -594,9 +595,12 @@ static int bridge_brd_start(struct bridge_dev_context *dev_ctxt,
 		if (!wait_for_start(dev_context, dw_sync_addr))
 			status = -ETIMEDOUT;
 
-		/* Start wdt */
-		dsp_wdt_sm_set((void *)ul_shm_base);
-		dsp_wdt_enable(true);
+		dev_get_symbol(dev_context->dev_obj, "_WDT_enable", &wdt_en);
+		if (wdt_en) {
+			/* Start wdt */
+			dsp_wdt_sm_set((void *)ul_shm_base);
+			dsp_wdt_enable(true);
+		}
 
 		status = dev_get_io_mgr(dev_context->dev_obj, &hio_mgr);
 		if (hio_mgr) {
-- 
1.7.4.1

_______________________________________________
devel mailing list
devel@xxxxxxxxxxxxxxxxxxxxxx
http://driverdev.linuxdriverproject.org/mailman/listinfo/devel


[Index of Archives]     [Linux Driver Backports]     [DMA Engine]     [Linux GPIO]     [Linux SPI]     [Video for Linux]     [Linux USB Devel]     [Linux Coverity]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [Yosemite Backpacking]
  Powered by Linux