spi: meson-spicc: add min sclk for each compatible (8791068d) · Commits · 戴 / test

The G12A SPICC controller variant takes the source clock from a specific clock instead of the bus clock. The minimal clock calculus won't work with the G12A support, thus add the minimal supported clock for each variant and pass this to the SPI core. Signed-off-by:

Neil Armstrong <narmstrong@baylibre.com> Link: https://lore.kernel.org/r/20200312133131.26430-6-narmstrong@baylibre.com Signed-off-by:

Mark Brown <broonie@kernel.org>

drivers/spi/spi-meson-spicc.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -132,6 +132,7 @@

		struct meson_spicc_data {
		unsigned int max_speed_hz;
		unsigned int min_speed_hz;
		bool has_oen;
		bool has_enhance_clk_div;
		};
		@@ -685,7 +686,7 @@ static int meson_spicc_probe(struct platform_device *pdev)
		SPI_BPW_MASK(16) \|
		SPI_BPW_MASK(8);
		master->flags = (SPI_MASTER_MUST_RX \| SPI_MASTER_MUST_TX);
		master->min_speed_hz = rate >> 9;
		master->min_speed_hz = spicc->data->min_speed_hz;
		master->setup = meson_spicc_setup;
		master->cleanup = meson_spicc_cleanup;
		master->prepare_message = meson_spicc_prepare_message;
		@@ -736,10 +737,12 @@ static int meson_spicc_remove(struct platform_device *pdev)

		static const struct meson_spicc_data meson_spicc_gx_data = {
		.max_speed_hz = 30000000,
		.min_speed_hz = 325000,
		};

		static const struct meson_spicc_data meson_spicc_axg_data = {
		.max_speed_hz = 80000000,
		.min_speed_hz = 325000,
		.has_oen = true,
		.has_enhance_clk_div = true,
		};

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