mtd: rawnand: atmel: set pmecc data setup time

Setup the pmecc data setup time as 3 clock cycles for 133MHz as recommended
by the datasheet.

Fixes: f88fc12 ("mtd: nand: Cleanup/rework the atmel_nand driver")
Reported-by: Zixun LI <[email protected]>
Closes: https://lore.kernel.org/all/[email protected]
Suggested-by: Ada Couprie Diaz <[email protected]>
Signed-off-by: Balamanikandan Gunasundar <[email protected]>
Signed-off-by: Miquel Raynal <[email protected]>

Author: bala-gunasundar

drivers/mtd/nand/raw/atmel/pmecc.c

@@ -143,6 +143,7 @@ struct atmel_pmecc_caps {
 	int nstrengths;
 	int el_offset;
 	bool correct_erased_chunks;
+	bool clk_ctrl;
 };
 
 struct atmel_pmecc {
@@ -843,6 +844,10 @@ static struct atmel_pmecc *atmel_pmecc_create(struct platform_device *pdev,
 	if (IS_ERR(pmecc->regs.errloc))
 		return ERR_CAST(pmecc->regs.errloc);
 
+	/* pmecc data setup time */
+	if (caps->clk_ctrl)
+		writel(PMECC_CLK_133MHZ, pmecc->regs.base + ATMEL_PMECC_CLK);
+
 	/* Disable all interrupts before registering the PMECC handler. */
 	writel(0xffffffff, pmecc->regs.base + ATMEL_PMECC_IDR);
 	atmel_pmecc_reset(pmecc);
@@ -896,6 +901,7 @@ static struct atmel_pmecc_caps at91sam9g45_caps = {
 	.strengths = atmel_pmecc_strengths,
 	.nstrengths = 5,
 	.el_offset = 0x8c,
+	.clk_ctrl = true,
 };
 
 static struct atmel_pmecc_caps sama5d4_caps = {