From 65ab1cda10f26935cad2ba01426077079cd96af3 Mon Sep 17 00:00:00 2001
From: Christian Mauderer <christian.mauderer@embedded-brains.de>
Date: Thu, 4 Feb 2021 14:27:50 +0100
Subject: bsps/arm/imxrt: Add FDT and FDT helper for QTMR

Makes it simpler to access the QTMR in an application via a FDT name or
link in an application specific FDT entry.
---
 .../nxp/devices/MIMXRT1052/drivers/fsl_qtmr.c      | 40 ++++++++++++++++++++++
 1 file changed, 40 insertions(+)

(limited to 'bsps/arm/imxrt/nxp')

diff --git a/bsps/arm/imxrt/nxp/devices/MIMXRT1052/drivers/fsl_qtmr.c b/bsps/arm/imxrt/nxp/devices/MIMXRT1052/drivers/fsl_qtmr.c
index 44b7867441..f96e5504be 100644
--- a/bsps/arm/imxrt/nxp/devices/MIMXRT1052/drivers/fsl_qtmr.c
+++ b/bsps/arm/imxrt/nxp/devices/MIMXRT1052/drivers/fsl_qtmr.c
@@ -6,6 +6,11 @@
  */
 
 #include "fsl_qtmr.h"
+#ifdef __rtems__
+#include <bsp.h>
+#include <bsp/irq.h>
+#include <libfdt.h>
+#endif /* __rtems__ */
 
 /* Component ID definition, used by tools. */
 #ifndef FSL_COMPONENT_ID
@@ -56,6 +61,41 @@ static uint32_t QTMR_GetInstance(TMR_Type *base)
     return instance;
 }
 
+#ifdef __rtems__
+TMR_Type *QTMR_get_regs_from_fdt(const void *fdt, int node)
+{
+    int rv;
+    TMR_Type *regs;
+
+    rv = fdt_node_check_compatible(fdt, node, "nxp,imxrt-qtimer");
+    if (rv != 0) {
+        return NULL;
+    }
+    regs = imx_get_reg_of_node(fdt, node);
+    return regs;
+}
+
+rtems_vector_number QTMR_get_IRQ_from_fdt(const void *fdt, int node)
+{
+    int rv;
+    rtems_vector_number irq;
+
+    rv = fdt_node_check_compatible(fdt, node, "nxp,imxrt-qtimer");
+    if (rv != 0) {
+        return BSP_INTERRUPT_VECTOR_INVALID;
+    }
+    irq = imx_get_irq_of_node(fdt, node, 0);
+    return irq;
+}
+
+uint32_t QTMR_get_src_clk(TMR_Type *base)
+{
+    (void) base;
+
+    return CLOCK_GetFreq(kCLOCK_IpgClk);
+}
+
+#endif /* __rtems__ */
 /*!
  * brief Ungates the Quad Timer clock and configures the peripheral for basic operation.
  *
-- 
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