* [U-Boot] [PATCH] arm: ls1021atwr: program the regulator for deep sleep
@ 2015-05-15 6:42 Chenhui Zhao
2015-07-17 9:13 ` Alison Wang
2015-08-04 15:47 ` York Sun
0 siblings, 2 replies; 3+ messages in thread
From: Chenhui Zhao @ 2015-05-15 6:42 UTC (permalink / raw)
To: u-boot
Program the external regulator to switch off voltage in deep sleep.
Signed-off-by: Chenhui Zhao <chenhui.zhao@freescale.com>
---
board/freescale/ls1021atwr/ls1021atwr.c | 34 +++++++++++++++++++++++++++++++++
1 file changed, 34 insertions(+)
diff --git a/board/freescale/ls1021atwr/ls1021atwr.c b/board/freescale/ls1021atwr/ls1021atwr.c
index 2c8d6d1..37ec0ba 100644
--- a/board/freescale/ls1021atwr/ls1021atwr.c
+++ b/board/freescale/ls1021atwr/ls1021atwr.c
@@ -578,6 +578,37 @@ struct smmu_stream_id dev_stream_id[] = {
{ 0x18c, 0x0e, "DEBUG" },
};
+#ifdef CONFIG_DEEP_SLEEP
+/* program the regulator (MC34VR500) to support deep sleep */
+void ls1twr_program_regulator(void)
+{
+ unsigned int i2c_bus;
+ u8 i2c_device_id;
+
+#define LS1TWR_I2C_BUS_MC34VR500 1
+#define MC34VR500_ADDR 0x8
+#define MC34VR500_DEVICEID 0x4
+#define MC34VR500_DEVICEID_MASK 0x0f
+
+ i2c_bus = i2c_get_bus_num();
+ i2c_set_bus_num(LS1TWR_I2C_BUS_MC34VR500);
+ i2c_device_id = i2c_reg_read(MC34VR500_ADDR, 0x0) &
+ MC34VR500_DEVICEID_MASK;
+ if (i2c_device_id != MC34VR500_DEVICEID) {
+ printf("The regulator (MC34VR500) does not exist. The device does not support deep sleep.\n");
+ return;
+ }
+
+ i2c_reg_write(MC34VR500_ADDR, 0x31, 0x4);
+ i2c_reg_write(MC34VR500_ADDR, 0x4d, 0x4);
+ i2c_reg_write(MC34VR500_ADDR, 0x6d, 0x38);
+ i2c_reg_write(MC34VR500_ADDR, 0x6f, 0x37);
+ i2c_reg_write(MC34VR500_ADDR, 0x71, 0x30);
+
+ i2c_set_bus_num(i2c_bus);
+}
+#endif
+
int board_init(void)
{
#ifndef CONFIG_SYS_FSL_NO_SERDES
@@ -600,6 +631,9 @@ int board_init(void)
u_qe_init();
#endif
+#ifdef CONFIG_DEEP_SLEEP
+ ls1twr_program_regulator();
+#endif
return 0;
}
--
1.9.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* [U-Boot] [PATCH] arm: ls1021atwr: program the regulator for deep sleep
2015-05-15 6:42 [U-Boot] [PATCH] arm: ls1021atwr: program the regulator for deep sleep Chenhui Zhao
@ 2015-07-17 9:13 ` Alison Wang
2015-08-04 15:47 ` York Sun
1 sibling, 0 replies; 3+ messages in thread
From: Alison Wang @ 2015-07-17 9:13 UTC (permalink / raw)
To: u-boot
Acked-by: Alison Wang <alison.wang@freescale.com>
Zhao Chenhui-3 wrote
> Program the external regulator to switch off voltage in deep sleep.
>
> Signed-off-by: Chenhui Zhao <
> chenhui.zhao@
> >
> ---
> board/freescale/ls1021atwr/ls1021atwr.c | 34
> +++++++++++++++++++++++++++++++++
> 1 file changed, 34 insertions(+)
>
> diff --git a/board/freescale/ls1021atwr/ls1021atwr.c
> b/board/freescale/ls1021atwr/ls1021atwr.c
> index 2c8d6d1..37ec0ba 100644
> --- a/board/freescale/ls1021atwr/ls1021atwr.c
> +++ b/board/freescale/ls1021atwr/ls1021atwr.c
> @@ -578,6 +578,37 @@ struct smmu_stream_id dev_stream_id[] = {
> { 0x18c, 0x0e, "DEBUG" },
> };
>
> +#ifdef CONFIG_DEEP_SLEEP
> +/* program the regulator (MC34VR500) to support deep sleep */
> +void ls1twr_program_regulator(void)
> +{
> + unsigned int i2c_bus;
> + u8 i2c_device_id;
> +
> +#define LS1TWR_I2C_BUS_MC34VR500 1
> +#define MC34VR500_ADDR 0x8
> +#define MC34VR500_DEVICEID 0x4
> +#define MC34VR500_DEVICEID_MASK 0x0f
> +
> + i2c_bus = i2c_get_bus_num();
> + i2c_set_bus_num(LS1TWR_I2C_BUS_MC34VR500);
> + i2c_device_id = i2c_reg_read(MC34VR500_ADDR, 0x0) &
> + MC34VR500_DEVICEID_MASK;
> + if (i2c_device_id != MC34VR500_DEVICEID) {
> + printf("The regulator (MC34VR500) does not exist. The device does not
> support deep sleep.\n");
> + return;
> + }
> +
> + i2c_reg_write(MC34VR500_ADDR, 0x31, 0x4);
> + i2c_reg_write(MC34VR500_ADDR, 0x4d, 0x4);
> + i2c_reg_write(MC34VR500_ADDR, 0x6d, 0x38);
> + i2c_reg_write(MC34VR500_ADDR, 0x6f, 0x37);
> + i2c_reg_write(MC34VR500_ADDR, 0x71, 0x30);
> +
> + i2c_set_bus_num(i2c_bus);
> +}
> +#endif
> +
> int board_init(void)
> {
> #ifndef CONFIG_SYS_FSL_NO_SERDES
> @@ -600,6 +631,9 @@ int board_init(void)
> u_qe_init();
> #endif
>
> +#ifdef CONFIG_DEEP_SLEEP
> + ls1twr_program_regulator();
> +#endif
> return 0;
> }
>
> --
> 1.9.1
>
> _______________________________________________
> U-Boot mailing list
> U-Boot at .denx
> http://lists.denx.de/mailman/listinfo/u-boot
--
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^ permalink raw reply [flat|nested] 3+ messages in thread
* [U-Boot] [PATCH] arm: ls1021atwr: program the regulator for deep sleep
2015-05-15 6:42 [U-Boot] [PATCH] arm: ls1021atwr: program the regulator for deep sleep Chenhui Zhao
2015-07-17 9:13 ` Alison Wang
@ 2015-08-04 15:47 ` York Sun
1 sibling, 0 replies; 3+ messages in thread
From: York Sun @ 2015-08-04 15:47 UTC (permalink / raw)
To: u-boot
On 05/14/2015 11:42 PM, Chenhui Zhao wrote:
> Program the external regulator to switch off voltage in deep sleep.
>
> Signed-off-by: Chenhui Zhao <chenhui.zhao@freescale.com>
> ---
Applied to u-boot-fsl-qoriq master. Thanks.
York
^ permalink raw reply [flat|nested] 3+ messages in thread
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2015-05-15 6:42 [U-Boot] [PATCH] arm: ls1021atwr: program the regulator for deep sleep Chenhui Zhao
2015-07-17 9:13 ` Alison Wang
2015-08-04 15:47 ` York Sun
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