This serie implements syscon-based regmap access to dwmac-sunxi driver, allowing to deprecate the allwinner,sun7i-a20-gmac-clk clock driver. In order to register regmap, we firstly need to change existing clock setups (sun7i-a20 and sun6i-a31) from CLK_OF_DECLARE to CLK_OF_DECLARE_DRIVER to allow probing the same driver again via the platform driver framework. This patchset touches 3 areas: - sun7i and sun6i CCUs now set up regmap to allow dwmac-sunxi driver to access GMAC clock register. - dwmac-sunxi can now handle syscon-based clock register to handle its own clock. - sun7i and sun6i devicetrees are converted to use the new syscon-based access. After this patchset: - sun7i-a20 works fully without legacy sunxi clocks (CLK_SUNXI) - only sun9i-a80 SoC remains as a single sun7i-a20-gmac-clk user. Please note that sun6i-a31 changes are only build-tested, as I lack the hardware to test this. Changes since v2: * Fix broken sun6i-a31 CCU patch. * Rename series to "Clean up sun7i-a20-gmac-clk usage" Changes since v1: * Use CLK_OF_DECLARE_DRIVER to make it possible to probe again and set up regmap using platform device probe. * Clarify the meaning of "legacy" in dwmac-sunxi driver. * Make sure we don't mess with the RX/TX delay settings when updating clock registers. * Update devicetree bindings * Add sun6i-A31 support. (not tested due to lack of hardware) Priit Laes (6): clk: sunxi-ng: a20: Register regmap for sun7i CCU clk: sunxi-ng: a31: Register regmap for sun6i CCU net: stmmac: dwmac-sunxi: Implement syscon-based clock handling dt-bindings: net: sun7i-gmac: Add syscon support ARM: dts: sun7i: Use syscon-based implementation for gmac ARM: dts: sun6i: Use syscon-based implementation for gmac .../net/allwinner,sun7i-a20-gmac.yaml | 15 +- arch/arm/boot/dts/sun6i-a31.dtsi | 35 +---- arch/arm/boot/dts/sun7i-a20.dtsi | 36 +---- drivers/clk/sunxi-ng/ccu-sun4i-a10.c | 62 ++++++++- drivers/clk/sunxi-ng/ccu-sun6i-a31.c | 62 ++++++++- .../net/ethernet/stmicro/stmmac/dwmac-sunxi.c | 130 ++++++++++++++++-- 6 files changed, 261 insertions(+), 79 deletions(-) -- 2.26.2
