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Christophe Kerello committed 33c8cf42152
mtd: rawnand: stm32_fmc2: add polling mode This patch adds the polling mode, a basic mode that do not need any DMA channels. This mode is also useful for debug purpose. Signed-off-by: Christophe Kerello <christophe.kerello@st.com> Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>