4a710a0b0c
Merge series from Chen-Yu Tsai <wenst@chromium.org>: Hi, This is v3 of the remainder of the MT6358 regulator driver cleanup and improvement series. v1 can be found here [1]; v2 is here [2]. Changes since v2: - Merged patches dropped - Fixed up pickable linear ranges' selector values - Collected tags - Patch adding missing regulator definitions squashed into patch using the definitions; recommended by Krzysztof on my MT6366 series. - Remaining dts patch split out to be sent separately Changes since v1: - Merged patches dropped - Added patch to move VCN33 regulator status sync after ID check - Added patch to fix VCN33 sync fail error message - Added patch to add missing register definitions Various discrepancies were found while preparing to upstream MT8186 device trees, which utilize the MT6366 PMIC, that is also covered by this driver. Patches 1~3 should go through the regulator tree, and patch 4 through the soc/mediatek tree. ** Note: patch 2 needs an ack from Lee for the mfd header change. This v3 series can be seen as two parts. v1 had three parts, but one part was fully merged, and then v2 gained another cleanup. v3 drops the "fixing bogus regulators" part: driver changes are fully merged and device tree change will be sent separately. Part 1 - Robust chip ID checking (patch 1) Angelo suggested making the driver fail to probe if an unexpected chip ID was found. Patch 1 implements this. Part 2 - Output voltage fine tuning support (patches 2, 3) Many of the LDOs on these PMIC support an extra level of output voltage fine tuning. Most default to no offset, but a couple have a non-zero offset by default. Previously this was unaccounted for in the driver and device tree constraints. On the outputs with non-zero offset, this ends up becoming a discrepancy between the device tree and actual hardware. These two patches adds support for this second level of tuning, modeled as bunch of linear ranges. While it's unlikely we need this level of control, it's nice to be able to read back the accurate hardware settings. Please have a look. Thanks ChenYu [1] https://lore.kernel.org/linux-arm-kernel/20230609083009.2822259-1-wenst@chromium.org/ [2] https://lore.kernel.org/linux-mediatek/20230721082903.2038975-1-wenst@chromium.org/ Chen-Yu Tsai (3): regulator: mt6358: Fail probe on unknown chip ID regulator: mt6358: Add output voltage fine tuning to fixed regulators regulator: mt6358: Add output voltage fine tuning to variable LDOs drivers/regulator/mt6358-regulator.c | 304 ++++++++++++--------------- include/linux/mfd/mt6358/registers.h | 6 + 2 files changed, 144 insertions(+), 166 deletions(-) -- 2.42.0.283.g2d96d420d3-goog |
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Linux kernel
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