Commit ff509cd1 authored Aug 23, 2016 by Shashank Mittal

coresight-tpda: skip writing '0' to FREQREQ_VAL register



FREQREQ_VAL is configured by RPM at the time of frequency switch.
TPDA enable sequence resets this register if user doesn't provide a
freq_req_val. This can be problem as it can accidentally reset the value
configured by RPM.

Change-Id: I2eb733bac700de372ae680cf74a251bb463e6650
Signed-off-by: Shashank Mittal <mittals@codeaurora.org>

parent e97b6a0e

drivers/hwtracing/coresight/coresight-tpda.c

+0 −2

Original line number	Diff line number	Diff line
		@@ -154,8 +154,6 @@ static void __tpda_enable_post_port(struct tpda_drvdata *drvdata)

		if (drvdata->freq_req_val)
		tpda_writel(drvdata, drvdata->freq_req_val, TPDA_FREQREQ_VAL);
		else
		tpda_writel(drvdata, 0x0, TPDA_FREQREQ_VAL);

		val = tpda_readl(drvdata, TPDA_CR);
		if (drvdata->freq_req)