This patch is adding the same PMIC handling as the u-boot spl does for
this Board. It ensures sane defaults.
Signed-off-by: Michael Grzeschik <m.grzeschik@xxxxxxxxxxxxxx>
---
arch/arm/boards/phytec-som-imx8mq/board.c | 38 +++++++++++++++++++++++
1 file changed, 38 insertions(+)
diff --git a/arch/arm/boards/phytec-som-imx8mq/board.c b/arch/arm/boards/phytec-som-imx8mq/board.c
index 4fd098c5f6..7df53a7cfb 100644
--- a/arch/arm/boards/phytec-som-imx8mq/board.c
+++ b/arch/arm/boards/phytec-som-imx8mq/board.c
@@ -10,9 +10,45 @@
#include <init.h>
#include <linux/sizes.h>
#include <mach/bbu.h>
+#include <mfd/pfuze.h>
#include <envfs.h>
+#define PFUZE100_DEVICEID 0x0
+#define PFUZE100_REVID 0x3
+
+#define PFUZE100_SW1ABMODE 0x23
+#define PFUZE100_SW2MODE 0x38
+#define PFUZE100_SW1CMODE 0x31
+#define PFUZE100_SW3AVOL 0x3c
+
+#define APS_PFM 0xc
+
+static void imx8mq_setup_pmic_voltages(struct regmap *map)
+{
+ int offset = PFUZE100_SW1CMODE;
+ int switch_num = 6;
+ int val, i;
+
+ regmap_read(map, PFUZE100_SW3AVOL, &val);
+
+ /* ensure the correct VDD_DRAM_0V9 output voltage */
+ regmap_write_bits(map, PFUZE100_SW3AVOL, 0x3f, 0x18);
+
+ /* pfuze200 */
+ regmap_read(map, PFUZE100_DEVICEID, &val);
+ if (val & 0xf) {
+ offset = PFUZE100_SW2MODE;
+ switch_num = 4;
+ }
+
+ /* set all switches APS in normal and PFM mode in standby */
+ regmap_write(map, PFUZE100_SW1ABMODE, APS_PFM);
+
+ for (i = 0; i < switch_num - 1; i++)
+ regmap_write(map, offset + i * 7, APS_PFM);
+}
+
static int physom_imx8mq_devices_init(void)
{
int flag_emmc = 0;
@@ -23,6 +59,8 @@ static int physom_imx8mq_devices_init(void)
barebox_set_hostname("phycore-imx8mq");
+ pfuze_register_init_callback(imx8mq_setup_pmic_voltages);
+
switch (bootsource_get_instance()) {
case 0:
flag_emmc = BBU_HANDLER_FLAG_DEFAULT;
--
2.25.0
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