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From: Sachin Gupta <quic_sachgupt@quicinc.com>
To: Ulf Hansson <ulf.hansson@linaro.org>, Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
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CC: <linux-mmc@vger.kernel.org>, <devicetree@vger.kernel.org>,
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Subject: [PATCH V3 0/4] mmc: sdhci-msm: Rectify DLL programming sequence for
SDCC
Date: Wed, 22 Jan 2025 15:17:03 +0530
Message-ID: <20250122094707.24859-1-quic_sachgupt@quicinc.com>
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| Series |
mmc: sdhci-msm: Rectify DLL programming sequence for SDCC
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expand
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From: sachgupt <quic_sachgupt@quicinc.com> With the current DLL sequence stability issues are seen in HS400 and HS200 mode for data transfers. Rectify the DLL programming sequence as per latest hardware programming guide and also incorporate support for HS200 and HS400 DLL settings using the device tree. Changes from v2: 1. Addressed Dmitry Baryshkov comments: a. Regarding TCXO frequency. b. Regarding clock rate. c. regarding checkpatch. Changes from v1: 1. Addressed Tengfei Fan comment, added missing semicolocon in sdhci_msm_host structure. Sachin Gupta (4): dt-bindings: mmc: Add dll-hsr-list for HS400 and HS200 modes mmc: sdhci-msm: Add core_major, minor to msm_host structure mmc: sdhci-msm: Add Device tree parsing logic for DLL settings mmc: sdhci-msm: Rectify DLL programming sequence for SDCC .../devicetree/bindings/mmc/sdhci-msm.yaml | 5 + drivers/mmc/host/sdhci-msm.c | 362 +++++++++++++++++- 2 files changed, 349 insertions(+), 18 deletions(-)