Messages in this thread | | | Date | Thu, 27 Jul 2023 18:41:18 -0700 | Subject | Re: [PATCH v2 4/6] arm64: dts: qcom: Add base SM4450 QRD DTS | From | Trilok Soni <> |
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On 7/27/2023 5:49 PM, Tengfei Fan wrote: > > > 在 7/27/2023 9:08 PM, Konrad Dybcio 写道: >> On 27.07.2023 10:49, Tengfei Fan wrote: >>> >>> >>> 在 7/27/2023 3:59 PM, Konrad Dybcio 写道: >>>> On 27.07.2023 08:56, Krzysztof Kozlowski wrote: >>>>> On 27/07/2023 04:35, Tengfei Fan wrote: >>>>>> Add DTS for Qualcomm QRD platform which uses SM4450 SoC. >>>>>> >>>>>> Signed-off-by: Tengfei Fan <quic_tengfan@quicinc.com> >>>>>> --- >>>>>> arch/arm64/boot/dts/qcom/Makefile | 1 + >>>>>> arch/arm64/boot/dts/qcom/sm4450-qrd.dts | 18 ++++++++++++++++++ >>>>>> 2 files changed, 19 insertions(+) >>>>>> create mode 100644 arch/arm64/boot/dts/qcom/sm4450-qrd.dts >>>>>> >>>>>> diff --git a/arch/arm64/boot/dts/qcom/Makefile >>>>>> b/arch/arm64/boot/dts/qcom/Makefile >>>>>> index 337abc4ceb17..db805d0929c8 100644 >>>>>> --- a/arch/arm64/boot/dts/qcom/Makefile >>>>>> +++ b/arch/arm64/boot/dts/qcom/Makefile >>>>>> @@ -186,6 +186,7 @@ dtb-$(CONFIG_ARCH_QCOM) += >>>>>> sdm850-lenovo-yoga-c630.dtb >>>>>> dtb-$(CONFIG_ARCH_QCOM) += sdm850-samsung-w737.dtb >>>>>> dtb-$(CONFIG_ARCH_QCOM) += sdx75-idp.dtb >>>>>> dtb-$(CONFIG_ARCH_QCOM) += sm4250-oneplus-billie2.dtb >>>>>> +dtb-$(CONFIG_ARCH_QCOM) += sm4450-qrd.dtb >>>>>> dtb-$(CONFIG_ARCH_QCOM) += sm6115-fxtec-pro1x.dtb >>>>>> dtb-$(CONFIG_ARCH_QCOM) += sm6115p-lenovo-j606f.dtb >>>>>> dtb-$(CONFIG_ARCH_QCOM) += sm6125-sony-xperia-seine-pdx201.dtb >>>>>> diff --git a/arch/arm64/boot/dts/qcom/sm4450-qrd.dts >>>>>> b/arch/arm64/boot/dts/qcom/sm4450-qrd.dts >>>>>> new file mode 100644 >>>>>> index 000000000000..04ad1dd4285a >>>>>> --- /dev/null >>>>>> +++ b/arch/arm64/boot/dts/qcom/sm4450-qrd.dts >>>>>> @@ -0,0 +1,18 @@ >>>>>> +// SPDX-License-Identifier: BSD-3-Clause >>>>>> +/* >>>>>> + * Copyright (c) 2023, Qualcomm Innovation Center, Inc. All >>>>>> rights reserved. >>>>>> + */ >>>>>> + >>>>>> +/dts-v1/; >>>>>> + >>>>>> +#include "sm4450.dtsi" >>>>>> +/ { >>>>>> + model = "Qualcomm Technologies, Inc. SM4450 QRD"; >>>>>> + compatible = "qcom,sm4450-qrd", "qcom,sm4450"; >>>>>> + >>>>>> + aliases { }; >>>>>> + >>>>>> + chosen { >>>>>> + bootargs = "console=hvc0 earlycon=hvc0 hvc_dcc.enable=1 >>>>>> cpuidle.off=1"; >>>>> >>>>> No earlycon, no hvc.enable (there is no such parameter), no >>>>> cpuidle.off >>>>> (again don't add fake stuff). So the only suitable argument is >>>>> console, >>>>> but this should be actually used via stdout path, although it seems >>>>> there is no device node for such usage? >>>> hvc totally comes from Qualcomm downstream and all the Gunyah >>>> shenanigans.. >>>> >>>> Tengfei, please ensure the patches are tested against linux-next >>>> with no additional changes or modules, with a clean Linux userspace >>>> (or at least a ramdisk). >>>> >>>> Konrad >>> Hi Konrad, >>> All these patches are tesed on linux-next, and get DCC console. >>> For support this test, I did a temporal for enable >>> CONFIG_HVC_DCC(this change haven't push to upstream). >> So what you've said is that you've not tested against linux-next + >> this patchset. >> >> You're supposed to `git checkout linux-next/master && (pick the series >> you're sending)` and test just that. No less, no more. Preferably with >> the upstream arm64 defconfig. >> >> Konrad > Hi Konrad, > Sorry, my explain isn't enough before. > > My tested against linux-next + this patchset, all my test code from > upstream linux-next, haven't downstream code related. > > About the temporal patch which enable CONFIG_HVC_DCC, because we haven't > enable uart, so I enable CONFIG_HVC_DCC for verify if we can get DCC > console through "make ARCH=arm64 menuconfig" on linux-next/master, but > this patchset haven't contain this enable CONFIG_HVC_DCC patch, because > upstream seems don't want to enable CONFIG_HVC_DCC defaultly. > > Besides these, I all do dtbs_check and checkpatch.pl check, all these > check passed.
CONFIG_HVC_DCC is at upstream. It is not necessary to have UART to test the kernel w/ the console.
One can boot the kernel w/ JTAG console too. This will allow us to submit the patches without submitting the UART / clocks dependencies.
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/tty/hvc/hvc_dcc.c
-- ---Trilok Soni
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