diff options
Diffstat (limited to 'target/linux/s3c24xx/patches-2.6.24/1313-S3C24xx-NAND-allow-for-faster-timings.patch')
| -rw-r--r-- | target/linux/s3c24xx/patches-2.6.24/1313-S3C24xx-NAND-allow-for-faster-timings.patch | 71 |
1 files changed, 0 insertions, 71 deletions
diff --git a/target/linux/s3c24xx/patches-2.6.24/1313-S3C24xx-NAND-allow-for-faster-timings.patch b/target/linux/s3c24xx/patches-2.6.24/1313-S3C24xx-NAND-allow-for-faster-timings.patch deleted file mode 100644 index 640c9b3..0000000 --- a/target/linux/s3c24xx/patches-2.6.24/1313-S3C24xx-NAND-allow-for-faster-timings.patch +++ /dev/null @@ -1,71 +0,0 @@ -From 54524f4531c8b262431b794fea610d81bb351c86 Mon Sep 17 00:00:00 2001 -From: Harald Welte <laforge@openmoko.org> -Date: Tue, 21 Oct 2008 08:17:07 +0100 -Subject: [PATCH] S3C24xx NAND: allow for faster timings - -Tacls can actually be zero with some NAND flash devices, so we need -to permit this. - -Also, the TACLS register actually specifies the actual number of -HCLK clocks, where the TWRPH0 and TWRPH1 registers are auto-incremented -by one HCLK clock in hardware. - -Signed-off-by: Harald Welte <laforge@openmoko.org> ---- - drivers/mtd/nand/s3c2410.c | 13 +++++++------ - 1 files changed, 7 insertions(+), 6 deletions(-) - -diff --git a/drivers/mtd/nand/s3c2410.c b/drivers/mtd/nand/s3c2410.c -index 4413d76..eeb48ed 100644 ---- a/drivers/mtd/nand/s3c2410.c -+++ b/drivers/mtd/nand/s3c2410.c -@@ -158,6 +158,10 @@ static int s3c_nand_calc_rate(int wanted, unsigned long clk, int max) - { - int result; - -+ /* Tacls can be 0ns in some cases */ -+ if (wanted == 0) -+ return 0; -+ - result = (wanted * clk) / NS_IN_KHZ; - result++; - -@@ -168,9 +172,6 @@ static int s3c_nand_calc_rate(int wanted, unsigned long clk, int max) - return -1; - } - -- if (result < 1) -- result = 1; -- - return result; - } - -@@ -202,7 +203,7 @@ static int s3c2410_nand_inithw(struct s3c2410_nand_info *info, - twrph1 = 8; - } - -- if (tacls < 0 || twrph0 < 0 || twrph1 < 0) { -+ if (tacls < 0 || twrph0 < 1 || twrph1 < 1) { - dev_err(info->device, "cannot get suitable timings\n"); - return -EINVAL; - } -@@ -213,14 +214,14 @@ static int s3c2410_nand_inithw(struct s3c2410_nand_info *info, - switch (info->cpu_type) { - case TYPE_S3C2410: - cfg = S3C2410_NFCONF_EN; -- cfg |= S3C2410_NFCONF_TACLS(tacls - 1); -+ cfg |= S3C2410_NFCONF_TACLS(tacls); - cfg |= S3C2410_NFCONF_TWRPH0(twrph0 - 1); - cfg |= S3C2410_NFCONF_TWRPH1(twrph1 - 1); - break; - - case TYPE_S3C2440: - case TYPE_S3C2412: -- cfg = S3C2440_NFCONF_TACLS(tacls - 1); -+ cfg = S3C2440_NFCONF_TACLS(tacls); - cfg |= S3C2440_NFCONF_TWRPH0(twrph0 - 1); - cfg |= S3C2440_NFCONF_TWRPH1(twrph1 - 1); - --- -1.5.6.5 - |