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imx9/flexcan: Add disable/enable cycle

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Add enable/disable cycle to initialize
function to speed up soft reset

Signed-off-by: Jouni Ukkonen <jouni.ukkonen@unikie.com>
This commit is contained in:
Jouni Ukkonen
2024-10-29 09:38:32 +02:00
committed by Xiang Xiao
parent e29258391f
commit d260e7f59e
1 changed files with 13 additions and 1 deletions
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arch/arm64/src/imx9/imx9_flexcan.c
+13 -1
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@@ -1911,6 +1911,14 @@ static int imx9_initialize(struct imx9_driver_s *priv)
static void imx9_reset(struct imx9_driver_s *priv) static void imx9_reset(struct imx9_driver_s *priv)
{ {
/* Make sure module is enabled */
if (!imx9_setenable(priv->base, true))
{
canerr("Enable fail\n");
return;
}
modifyreg32(priv->base + IMX9_CAN_MCR_OFFSET, 0, CAN_MCR_SOFTRST); modifyreg32(priv->base + IMX9_CAN_MCR_OFFSET, 0, CAN_MCR_SOFTRST);
if (!imx9_waitmcr_change(priv->base, CAN_MCR_SOFTRST, false)) if (!imx9_waitmcr_change(priv->base, CAN_MCR_SOFTRST, false))
@@ -1919,7 +1927,7 @@ static void imx9_reset(struct imx9_driver_s *priv)
return; return;
} }
/* Enable module */ /* Disable module */
if (!imx9_setenable(priv->base, false)) if (!imx9_setenable(priv->base, false))
{ {
@@ -2051,6 +2059,10 @@ int imx9_caninitialize(int intf)
return -EAGAIN; return -EAGAIN;
} }
/* Disable */
imx9_setenable(priv->base, false);
/* Initialize the driver structure */ /* Initialize the driver structure */
priv->dev.d_ifup = imx9_ifup; /* I/F up (new IP address) callback */ priv->dev.d_ifup = imx9_ifup; /* I/F up (new IP address) callback */