| From foo@baz Fri Sep 21 10:21:24 CEST 2018 |
| From: Bhushan Shah <bshah@kde.org> |
| Date: Mon, 9 Jul 2018 14:46:28 +0530 |
| Subject: ARM: dts: qcom: msm8974-hammerhead: increase load on l20 for sdhci |
| |
| From: Bhushan Shah <bshah@kde.org> |
| |
| [ Upstream commit 03864e57770a9541e7ff3990bacf2d9a2fffcd5d ] |
| |
| The kernel would not boot on the hammerhead hardware due to the |
| following error: |
| |
| mmc0: Timeout waiting for hardware interrupt. |
| mmc0: sdhci: ============ SDHCI REGISTER DUMP =========== |
| mmc0: sdhci: Sys addr: 0x00000200 | Version: 0x00003802 |
| mmc0: sdhci: Blk size: 0x00000200 | Blk cnt: 0x00000200 |
| mmc0: sdhci: Argument: 0x00000000 | Trn mode: 0x00000023 |
| mmc0: sdhci: Present: 0x03e80000 | Host ctl: 0x00000034 |
| mmc0: sdhci: Power: 0x00000001 | Blk gap: 0x00000000 |
| mmc0: sdhci: Wake-up: 0x00000000 | Clock: 0x00000007 |
| mmc0: sdhci: Timeout: 0x0000000e | Int stat: 0x00000000 |
| mmc0: sdhci: Int enab: 0x02ff900b | Sig enab: 0x02ff100b |
| mmc0: sdhci: AC12 err: 0x00000000 | Slot int: 0x00000000 |
| mmc0: sdhci: Caps: 0x642dc8b2 | Caps_1: 0x00008007 |
| mmc0: sdhci: Cmd: 0x00000c1b | Max curr: 0x00000000 |
| mmc0: sdhci: Resp[0]: 0x00000c00 | Resp[1]: 0x00000000 |
| mmc0: sdhci: Resp[2]: 0x00000000 | Resp[3]: 0x00000000 |
| mmc0: sdhci: Host ctl2: 0x00000008 |
| mmc0: sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x70040220 |
| mmc0: sdhci: ============================================ |
| mmc0: Card stuck in wrong state! mmcblk0 card_busy_detect status: 0xe00 |
| mmc0: cache flush error -110 |
| mmc0: Reset 0x1 never completed. |
| |
| This patch increases the load on l20 to 0.2 amps for the sdhci |
| and allows the device to boot normally. |
| |
| Signed-off-by: Bhushan Shah <bshah@kde.org> |
| Signed-off-by: Brian Masney <masneyb@onstation.org> |
| Suggested-by: Bjorn Andersson <bjorn.andersson@linaro.org> |
| Tested-by: Brian Masney <masneyb@onstation.org> |
| Signed-off-by: Andy Gross <andy.gross@linaro.org> |
| Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| --- |
| arch/arm/boot/dts/qcom-msm8974-lge-nexus5-hammerhead.dts | 2 ++ |
| 1 file changed, 2 insertions(+) |
| |
| --- a/arch/arm/boot/dts/qcom-msm8974-lge-nexus5-hammerhead.dts |
| +++ b/arch/arm/boot/dts/qcom-msm8974-lge-nexus5-hammerhead.dts |
| @@ -189,6 +189,8 @@ |
| regulator-max-microvolt = <2950000>; |
| |
| regulator-boot-on; |
| + regulator-system-load = <200000>; |
| + regulator-allow-set-load; |
| }; |
| |
| l21 { |
