From: Tushar Behera Date: Mon, 8 Apr 2013 06:28:12 +0000 (+0900) Subject: clk: exynos5250: Fix divider values for sclk_mmc{0,1,2,3} X-Git-Tag: v3.10-rc1~63^2~4^2~37 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=688f7d8c9fef621c53c7b385ff6baf62bcb6b077;p=profile%2Fivi%2Fkernel-x86-ivi.git clk: exynos5250: Fix divider values for sclk_mmc{0,1,2,3} In legacy setup, sclk_mmc{0,1,2,3} used PRE_RATIO bit-field (8-bit wide) instead of RATIO bit-field (4-bit wide) for dividing clock rate. With current common clock setup, we are using RATIO bit-field which is creating FIFO read errors while accessing eMMC. Changing over to use PRE_RATIO bit-field fixes this issue. dwmmc_exynos 12200000.dwmmc0: data FIFO error (status=00008020) mmcblk0: error -5 transferring data, sector 1, nr 7, cmd response 0x900, card status 0x0 end_request: I/O error, dev mmcblk0, sector 1 Signed-off-by: Tushar Behera CC: Thomas Abraham Acked-by: Mike Turquette Signed-off-by: Kukjin Kim --- diff --git a/drivers/clk/samsung/clk-exynos5250.c b/drivers/clk/samsung/clk-exynos5250.c index e5e733a..7290faa 100644 --- a/drivers/clk/samsung/clk-exynos5250.c +++ b/drivers/clk/samsung/clk-exynos5250.c @@ -276,10 +276,10 @@ struct samsung_div_clock exynos5250_div_clks[] __initdata = { DIV(none, "div_pcm0", "sclk_audio0", DIV_MAU, 4, 8), DIV(none, "div_sata", "mout_sata", DIV_FSYS0, 20, 4), DIV(none, "div_usb3", "mout_usb3", DIV_FSYS0, 24, 4), - DIV(none, "div_mmc0", "mout_mmc0", DIV_FSYS1, 0, 4), - DIV(none, "div_mmc1", "mout_mmc1", DIV_FSYS1, 16, 4), - DIV(none, "div_mmc2", "mout_mmc2", DIV_FSYS2, 0, 4), - DIV(none, "div_mmc3", "mout_mmc3", DIV_FSYS2, 16, 4), + DIV(none, "div_mmc0", "mout_mmc0", DIV_FSYS1, 8, 8), + DIV(none, "div_mmc1", "mout_mmc1", DIV_FSYS1, 24, 8), + DIV(none, "div_mmc2", "mout_mmc2", DIV_FSYS2, 8, 8), + DIV(none, "div_mmc3", "mout_mmc3", DIV_FSYS2, 24, 8), DIV(none, "div_uart0", "mout_uart0", DIV_PERIC0, 0, 4), DIV(none, "div_uart1", "mout_uart1", DIV_PERIC0, 4, 4), DIV(none, "div_uart2", "mout_uart2", DIV_PERIC0, 8, 4),