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soc: nxp: imx: imx7d: soc.c: enable uart1/3/4/5/7 if used in DT #97872

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Merged
merged 1 commit into from
Oct 22, 2025
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soc: nxp: imx: imx7d: soc.c: enable uart1/3/4/5/7 if used in DT #97872

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75 changes: 75 additions & 0 deletions soc/nxp/imx/imx7d/soc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -84,6 +84,21 @@ static void nxp_mcimx7_gpio_config(void)
static void nxp_mcimx7_uart_config(void)
{

#if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(uart1))
/* We need to grasp board uart exclusively */
RDC_SetPdapAccess(RDC, rdcPdapUart1, RDC_DT_VAL(uart1), false, false);
/* Select clock derived from OSC clock(24M) */
CCM_UpdateRoot(CCM, ccmRootUart1, ccmRootmuxUartOsc24m, 0, 0);
/* Enable uart clock */
CCM_EnableRoot(CCM, ccmRootUart1);
/*
* IC Limitation
* M4 stop will cause A7 UART lose functionality
* So we need UART clock all the time
*/
CCM_ControlGate(CCM, ccmCcgrGateUart1, ccmClockNeededAll);
#endif

#if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(uart2))
/* We need to grasp board uart exclusively */
RDC_SetPdapAccess(RDC, rdcPdapUart2, RDC_DT_VAL(uart2), false, false);
Expand All @@ -99,6 +114,51 @@ static void nxp_mcimx7_uart_config(void)
CCM_ControlGate(CCM, ccmCcgrGateUart2, ccmClockNeededAll);
#endif

#if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(uart3))
/* We need to grasp board uart exclusively */
RDC_SetPdapAccess(RDC, rdcPdapUart3, RDC_DT_VAL(uart3), false, false);
/* Select clock derived from OSC clock(24M) */
CCM_UpdateRoot(CCM, ccmRootUart3, ccmRootmuxUartOsc24m, 0, 0);
/* Enable uart clock */
CCM_EnableRoot(CCM, ccmRootUart3);
/*
* IC Limitation
* M4 stop will cause A7 UART lose functionality
* So we need UART clock all the time
*/
CCM_ControlGate(CCM, ccmCcgrGateUart3, ccmClockNeededAll);
#endif

#if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(uart4))
/* We need to grasp board uart exclusively */
RDC_SetPdapAccess(RDC, rdcPdapUart4, RDC_DT_VAL(uart4), false, false);
/* Select clock derived from OSC clock(24M) */
CCM_UpdateRoot(CCM, ccmRootUart4, ccmRootmuxUartOsc24m, 0, 0);
/* Enable uart clock */
CCM_EnableRoot(CCM, ccmRootUart4);
/*
* IC Limitation
* M4 stop will cause A7 UART lose functionality
* So we need UART clock all the time
*/
CCM_ControlGate(CCM, ccmCcgrGateUart4, ccmClockNeededAll);
#endif

#if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(uart5))
/* We need to grasp board uart exclusively */
RDC_SetPdapAccess(RDC, rdcPdapUart5, RDC_DT_VAL(uart5), false, false);
/* Select clock derived from OSC clock(24M) */
CCM_UpdateRoot(CCM, ccmRootUart5, ccmRootmuxUartOsc24m, 0, 0);
/* Enable uart clock */
CCM_EnableRoot(CCM, ccmRootUart5);
/*
* IC Limitation
* M4 stop will cause A7 UART lose functionality
* So we need UART clock all the time
*/
CCM_ControlGate(CCM, ccmCcgrGateUart5, ccmClockNeededAll);
#endif

#if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(uart6))
/* We need to grasp board uart exclusively */
RDC_SetPdapAccess(RDC, rdcPdapUart6, RDC_DT_VAL(uart6), false, false);
Expand All @@ -113,6 +173,21 @@ static void nxp_mcimx7_uart_config(void)
*/
CCM_ControlGate(CCM, ccmCcgrGateUart6, ccmClockNeededAll);
#endif

#if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(uart7))
/* We need to grasp board uart exclusively */
RDC_SetPdapAccess(RDC, rdcPdapUart7, RDC_DT_VAL(uart7), false, false);
/* Select clock derived from OSC clock(24M) */
CCM_UpdateRoot(CCM, ccmRootUart7, ccmRootmuxUartOsc24m, 0, 0);
/* Enable uart clock */
CCM_EnableRoot(CCM, ccmRootUart7);
/*
* IC Limitation
* M4 stop will cause A7 UART lose functionality
* So we need UART clock all the time
*/
CCM_ControlGate(CCM, ccmCcgrGateUart7, ccmClockNeededAll);
#endif
}
#endif /* CONFIG_UART_IMX */

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