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Commit a3e5d7b5 authored by Abinaya P's avatar Abinaya P
Browse files

drivers: net: can: increase the delay value for controller boot-up 



In certain targets, K61 controller takes around 1.25 msecs to come up.
Increase the delay value in the probe to successfully register for
CAN controller.

CRs-Fixed: 2074505
Change-Id: I6d89988b556cbf3ff7d2b950eee871c2c731153c
Signed-off-by: default avatarAbinaya P <abinayap@codeaurora.org>
parent 35eaac3d

drivers/net/can/spi/k61.c

+14 −10
Original line number Diff line number Diff line
@@ -39,6 +39,7 @@ 
#define XFER_BUFFER_SIZE		64

#define K61_CLOCK			120000000

#define K61_MAX_CHANNELS		1

#define K61_FW_QUERY_RETRY_COUNT	3



struct k61_can {

	struct net_device	*netdev;
@@ -366,7 +367,7 @@ static int k61_query_firmware_version(struct k61_can *priv_data) 


	if (ret == 0) {

		wait_for_completion_interruptible_timeout(

				&priv_data->response_completion, 0.1 * HZ);

				&priv_data->response_completion, 0.001 * HZ);

		ret = priv_data->cmd_result;

	}
@@ -806,7 +807,7 @@ cleanup_privdata: 


static int k61_probe(struct spi_device *spi)

{

	int err;

	int err, retry = 0, query_err = -1;

	struct k61_can *priv_data;

	struct device *dev;
@@ -842,10 +843,10 @@ static int k61_probe(struct spi_device *spi) 
	gpio_direction_output(priv_data->reset, 0);

	udelay(1);

	gpio_direction_output(priv_data->reset, 1);

	/* Provide a delay of 10us for the chip to reset. This is part of

	/* Provide a delay of 300us for the chip to reset. This is part of

	 * the reset sequence.

	 */

	usleep_range(10, 11);

	usleep_range(300, 301);



	err = k61_create_netdev(spi, priv_data);

	if (err) {
@@ -868,9 +869,12 @@ static int k61_probe(struct spi_device *spi) 
	}

	dev_dbg(dev, "Request irq %d ret %d\n", spi->irq, err);



	err = k61_query_firmware_version(priv_data);

	while ((query_err != 0) && (retry < K61_FW_QUERY_RETRY_COUNT)) {

		query_err = k61_query_firmware_version(priv_data);

		retry++;

	}



	if (err) {

	if (query_err) {

		dev_info(dev, "K61 probe failed\n");

		err = -ENODEV;

		goto free_irq;