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From: Judith Mendez <jm@ti.com>
To: Ulf Hansson <ulf.hansson@linaro.org>, Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley
<conor+dt@kernel.org>
CC: Adrian Hunter <adrian.hunter@intel.com>, <linux-mmc@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, Nishanth Menon <nm@ti.com>,
Vignesh
Raghavendra <vigneshr@ti.com>, Andrew Davis <afd@ti.com>,
Udit Kumar
<u-kumar1@ti.com>, Roger Quadros <rogerq@kernel.org>,
<devicetree@vger.kernel.org>, Randolph Sapp <rs@ti.com>
Subject: [RFC PATCH 00/13] Add tuning algorithm for delay chain
Date: Tue, 30 Jan 2024 18:37:01 -0600
Message-ID: <20240131003714.2779593-1-jm@ti.com>
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| Series |
Add tuning algorithm for delay chain
|
expand
|
This patch series introduces a new tuning algorithm for mmc. The new algorithm should be used when delay chain is enabled. The ITAPDLY is selected from the largest passing window and the buffer is not viewed as a circular buffer. The new tuning algorithm is implemented as per the paper published here [0] and has been tested on the following platforms: AM62x SK, AM62A SK, AM62p SK, AM64x SK, and AM64x EVM. The series also includes a few fixes in the sdhci_am654 driver on OTAPDLYEN/ITAPDLYEN and ITAPDELSEL. There are also device tree node fixes for missing mmc nodes, modifying DLL properties, and fixes for OTAP/ITAP delay values. MMC0/MMC2 nodes are introduced for AM62ax in this series. This series is sent as a RFC mostly to get some feedback and/or comments on the new tuning algorithm implementation. [0] https://www.ti.com/lit/an/spract9/spract9.pdf Judith Mendez (11): drivers: mmc: host: sdhci_am654: Add tuning algorithm for delay chain drivers: mmc: host: sdhci_am654: Write ITAPDLY for DDR52 timing drivers: mmc: host: sdhci_am654: Add missing OTAP/ITAP enable drivers: mmc: host: sdhci_am654: Add ITAPDLYSEL in sdhci_j721e_4bit_set_clock drivers: mmc: host: sdhci_am654: Fix ITAPDLY for HS400 timing arm64: dts: ti: k3-am62a-main: Add sdhci2 instance arm64: dts: ti: k3-am64-main: Update ITAP/OTAP values for MMC arm64: dts: ti: k3-am62-main: Update ITAP/OTAP values for MMC arm64: dts: ti: k3-am62p: Add missing properties for MMC arm64: dts: ti: k3-am6*: Remove DLL properties for soft phys arm64: dts: ti: k3-am6*: Reorganize MMC properties Nitin Yadav (2): arm64: dts: ti: k3-am62a-main: Add sdhci0 instance arm64: dts: ti: k3-am62a7-sk: Enable eMMC support arch/arm64/boot/dts/ti/k3-am62-main.dtsi | 57 +++-- .../arm64/boot/dts/ti/k3-am625-beagleplay.dts | 5 - arch/arm64/boot/dts/ti/k3-am62a-main.dtsi | 45 +++- arch/arm64/boot/dts/ti/k3-am62a7-sk.dts | 27 ++- arch/arm64/boot/dts/ti/k3-am62p-main.dtsi | 44 +++- arch/arm64/boot/dts/ti/k3-am62p5-sk.dts | 7 +- .../arm64/boot/dts/ti/k3-am62x-sk-common.dtsi | 4 +- arch/arm64/boot/dts/ti/k3-am64-main.dtsi | 17 +- arch/arm64/boot/dts/ti/k3-am642-evm.dts | 4 +- arch/arm64/boot/dts/ti/k3-am642-sk.dts | 2 - drivers/mmc/host/sdhci_am654.c | 215 ++++++++++++++---- 11 files changed, 321 insertions(+), 106 deletions(-)