imx8: add iomux configuration api
Add iomux configuration api.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
diff --git a/arch/arm/mach-imx/imx8/iomux.c b/arch/arm/mach-imx/imx8/iomux.c
new file mode 100644
index 0000000..0ade85f
--- /dev/null
+++ b/arch/arm/mach-imx/imx8/iomux.c
@@ -0,0 +1,43 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2018 NXP
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/iomux.h>
+#include <asm/arch/sci/sci.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/*
+ * configures a single pad in the iomuxer
+ */
+void imx8_iomux_setup_pad(iomux_cfg_t pad)
+{
+ sc_pad_t pin_id = pad & PIN_ID_MASK;
+ int ret;
+
+ u32 val = (u32)((pad & MUX_PAD_CTRL_MASK) >> MUX_PAD_CTRL_SHIFT);
+
+ val |= PADRING_IFMUX_EN_MASK;
+ val |= PADRING_GP_EN_MASK;
+
+ ret = sc_pad_set(-1, pin_id, val);
+ if (ret)
+ printf("sc_pad_set failed!, pin: %u, val: 0x%x\n", pin_id, val);
+
+ debug("iomux: pin %d, val = 0x%x\n", pin_id, val);
+}
+
+/* configures a list of pads within declared with IOMUX_PADS macro */
+void imx8_iomux_setup_multiple_pads(iomux_cfg_t const *pad_list, u32 count)
+{
+ iomux_cfg_t const *p = pad_list;
+ int i;
+
+ for (i = 0; i < count; i++) {
+ imx8_iomux_setup_pad(*p);
+ p++;
+ }
+}