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author | Sascha Hauer <s.hauer@pengutronix.de> | 2020-05-04 22:42:18 +0200 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2020-05-06 09:25:21 +0200 |
commit | dfcfebe926e15e9d140e222f396f3b030eb4a196 (patch) | |
tree | 6c7c9f3f7734525a398b8ae78cbe7cf40b21cd4f /arch/arm/mach-mxs | |
parent | fdd554b91400189dfbcc5a5e79bc644acddf0328 (diff) | |
download | barebox-dfcfebe926e15e9d140e222f396f3b030eb4a196.tar.gz |
ARM: mxs: Increase VDDD voltage to match specification
Adoption of U-Boot commit:
| commit b4a2cdc13ed886b981e8fcd3087293ba9296f17f
| Author: Marek Vasut <marex@denx.de>
| Date: Tue Oct 15 18:26:57 2019 +0200
|
| arm: mxs: Increase VDDD voltage to match specification
|
| According to IMX28CEC rev. 4, 10/2018, Table 15. Recommended Operating
| Conditions, page 16, the VDDD should be set to 1.55V when the CPU is
| operating at 454MHz. This is the case in U-Boot, hence increase the
| VDDD voltage. This fixes instability when performing TFTP transfers.
| Increase the brownout threshold to 1.4V. The documentation recommends
| 1.45V setting for the brownout, however, this triggers failure during
| power block init, so keep the brownout slightly lower.
|
| Signed-off-by: Marek Vasut <marex@denx.de>
| Cc: Stefano Babic <sbabic@denx.de>
| Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/mach-mxs')
-rw-r--r-- | arch/arm/mach-mxs/power-init.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/mach-mxs/power-init.c b/arch/arm/mach-mxs/power-init.c index ca7c349d7f..c89f1f5f5d 100644 --- a/arch/arm/mach-mxs/power-init.c +++ b/arch/arm/mach-mxs/power-init.c @@ -1172,7 +1172,7 @@ static void mx23_ungate_power(void) writel(MX23_POWER_CTRL_CLKGATE, &power_regs->hw_power_ctrl_clr); } -struct mxs_power_ctrl mxs_vddd_default = { .target = 1500, .brownout = 1325 }; +struct mxs_power_ctrl mxs_vddd_default = { .target = 1550, .brownout = 1400 }; struct mxs_power_ctrl mxs_vdda_default = { .target = 1800, .brownout = 1650 }; struct mxs_power_ctrl mxs_vddio_default = { .target = 3300, .brownout = 3150 }; struct mxs_power_ctrl mx23_vddmem_default = { .target = 2500, .brownout = 1700 }; |