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[90.63.244.31]) by smtp.gmail.com with ESMTPSA id m21sm12242885wmi.27.2020.03.12.06.31.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 12 Mar 2020 06:31:38 -0700 (PDT) From: Neil Armstrong To: broonie@kernel.org Cc: Neil Armstrong , linux-spi@vger.kernel.org, linux-amlogic@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 5/9] spi: meson-spicc: add min sclk for each compatible Date: Thu, 12 Mar 2020 14:31:27 +0100 Message-Id: <20200312133131.26430-6-narmstrong@baylibre.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20200312133131.26430-1-narmstrong@baylibre.com> References: <20200312133131.26430-1-narmstrong@baylibre.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 --- drivers/spi/spi-meson-spicc.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-meson-spicc.c b/drivers/spi/spi-meson-spicc.c index 710b4e780daa..b5bd3a897e8f 100644 --- a/drivers/spi/spi-meson-spicc.c +++ b/drivers/spi/spi-meson-spicc.c @@ -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, }; -- 2.22.0