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| author | Guochun Mao <guochun.mao@mediatek.com> | 2022-01-18 22:28:20 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2022-01-24 13:32:12 +0000 |
| commit | 58b0a653b8dac40bbeb01a2c8a230aa8f84a7530 (patch) | |
| tree | 1c9946571f97b5826f3fb9f691e4e77a8baa6a9a /drivers/spi/spi-mtk-nor.c | |
| parent | 4e8bfe5cdf77621cb4e7b196448ceeff20d9d6a6 (diff) | |
| download | linux-58b0a653b8dac40bbeb01a2c8a230aa8f84a7530.tar.gz linux-58b0a653b8dac40bbeb01a2c8a230aa8f84a7530.tar.bz2 linux-58b0a653b8dac40bbeb01a2c8a230aa8f84a7530.zip | |
spi: spi-mtk-nor: add axi_s clock for mt8186
MT8186 needs axi_s clock for DMA feature.
Signed-off-by: Guochun Mao <guochun.mao@mediatek.com>
Signed-off-by: Zhen Zhang <zhen.zhang@mediatek.com>
Acked-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20220118142820.2729-5-guochun.mao@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-mtk-nor.c')
| -rw-r--r-- | drivers/spi/spi-mtk-nor.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/drivers/spi/spi-mtk-nor.c b/drivers/spi/spi-mtk-nor.c index e44fdf7c9e4b..455b4dcb26e9 100644 --- a/drivers/spi/spi-mtk-nor.c +++ b/drivers/spi/spi-mtk-nor.c @@ -115,6 +115,7 @@ struct mtk_nor { struct clk *spi_clk; struct clk *ctlr_clk; struct clk *axi_clk; + struct clk *axi_s_clk; unsigned int spi_freq; bool wbuf_en; bool has_irq; @@ -691,6 +692,7 @@ static void mtk_nor_disable_clk(struct mtk_nor *sp) clk_disable_unprepare(sp->spi_clk); clk_disable_unprepare(sp->ctlr_clk); clk_disable_unprepare(sp->axi_clk); + clk_disable_unprepare(sp->axi_s_clk); } static int mtk_nor_enable_clk(struct mtk_nor *sp) @@ -714,6 +716,14 @@ static int mtk_nor_enable_clk(struct mtk_nor *sp) return ret; } + ret = clk_prepare_enable(sp->axi_s_clk); + if (ret) { + clk_disable_unprepare(sp->spi_clk); + clk_disable_unprepare(sp->ctlr_clk); + clk_disable_unprepare(sp->axi_clk); + return ret; + } + return 0; } @@ -789,7 +799,7 @@ static int mtk_nor_probe(struct platform_device *pdev) struct mtk_nor *sp; struct mtk_nor_caps *caps; void __iomem *base; - struct clk *spi_clk, *ctlr_clk, *axi_clk; + struct clk *spi_clk, *ctlr_clk, *axi_clk, *axi_s_clk; int ret, irq; base = devm_platform_ioremap_resource(pdev, 0); @@ -808,6 +818,10 @@ static int mtk_nor_probe(struct platform_device *pdev) if (IS_ERR(axi_clk)) return PTR_ERR(axi_clk); + axi_s_clk = devm_clk_get_optional(&pdev->dev, "axi_s"); + if (IS_ERR(axi_s_clk)) + return PTR_ERR(axi_s_clk); + caps = (struct mtk_nor_caps *)of_device_get_match_data(&pdev->dev); ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(caps->dma_bits)); @@ -843,6 +857,7 @@ static int mtk_nor_probe(struct platform_device *pdev) sp->spi_clk = spi_clk; sp->ctlr_clk = ctlr_clk; sp->axi_clk = axi_clk; + sp->axi_s_clk = axi_s_clk; sp->caps = caps; sp->high_dma = caps->dma_bits > 32; sp->buffer = dmam_alloc_coherent(&pdev->dev, |