From: Amit Kumar Mahapatra amit.kumar-mahapatra@xilinx.com
commit 7499bfeedb47efc1ee4dc793b92c610d46e6d6a6 upstream.
In current implementation the Arasan NAND driver is updating the system clock(i.e., anand->clk) in accordance to the timing modes (i.e., SDR or NVDDR). But as per the Arasan NAND controller spec the flash clock or the NAND bus clock(i.e., nfc->bus_clk), need to be updated instead. This patch keeps the system clock unchanged and updates the NAND bus clock as per the timing modes.
Fixes: 197b88fecc50 ("mtd: rawnand: arasan: Add new Arasan NAND controller") CC: stable@vger.kernel.org # 5.8+ Signed-off-by: Amit Kumar Mahapatra amit.kumar-mahapatra@xilinx.com Signed-off-by: Miquel Raynal miquel.raynal@bootlin.com Link: https://lore.kernel.org/linux-mtd/20220628154824.12222-2-amit.kumar-mahapatr... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/mtd/nand/raw/arasan-nand-controller.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
--- a/drivers/mtd/nand/raw/arasan-nand-controller.c +++ b/drivers/mtd/nand/raw/arasan-nand-controller.c @@ -347,17 +347,17 @@ static int anfc_select_target(struct nan
/* Update clock frequency */ if (nfc->cur_clk != anand->clk) { - clk_disable_unprepare(nfc->controller_clk); - ret = clk_set_rate(nfc->controller_clk, anand->clk); + clk_disable_unprepare(nfc->bus_clk); + ret = clk_set_rate(nfc->bus_clk, anand->clk); if (ret) { dev_err(nfc->dev, "Failed to change clock rate\n"); return ret; }
- ret = clk_prepare_enable(nfc->controller_clk); + ret = clk_prepare_enable(nfc->bus_clk); if (ret) { dev_err(nfc->dev, - "Failed to re-enable the controller clock\n"); + "Failed to re-enable the bus clock\n"); return ret; }