Fix for class 10 SD cards (set DTO to 14)

diff --git a/kernel-bfs-2.6.28/debian/patches/class10sd_dto14_fix.diff b/kernel-bfs-2.6.28/debian/patches/class10sd_dto14_fix.diff
new file mode 100644 (file)
index 0000000..45b8f25
--- /dev/null
+++ b/kernel-bfs-2.6.28/debian/patches/class10sd_dto14_fix.diff
@@ -0,0 +1,38 @@
+--- kernel-2.6.28/drivers/mmc/host/omap_hsmmc.c        2011-04-28 23:06:37.000000000 +0200
++++ kernel-2.6.28.new/drivers/mmc/host/omap_hsmmc.c    2011-05-05 22:18:25.174891197 +0200
+@@ -958,34 +958,9 @@ static void set_data_timeout(struct omap
+                            unsigned int timeout_ns,
+                            unsigned int timeout_clks)
+ {
+-      unsigned int timeout, cycle_ns;
+-      uint32_t reg, clkd, dto = 0;
++      uint32_t reg, dto = 14;
+ 
+       reg = OMAP_HSMMC_READ(host->base, SYSCTL);
+-      clkd = (reg & CLKD_MASK) >> CLKD_SHIFT;
+-      if (clkd == 0)
+-              clkd = 1;
+-
+-      cycle_ns = 1000000000 / (clk_get_rate(host->fclk) / clkd);
+-      timeout = timeout_ns / cycle_ns;
+-      timeout += timeout_clks;
+-      if (timeout) {
+-              while ((timeout & 0x80000000) == 0) {
+-                      dto += 1;
+-                      timeout <<= 1;
+-              }
+-              dto = 31 - dto;
+-              timeout <<= 1;
+-              if (timeout && dto)
+-                      dto += 1;
+-              if (dto >= 13)
+-                      dto -= 13;
+-              else
+-                      dto = 0;
+-              if (dto > 14)
+-                      dto = 14;
+-      }
+-
+       reg &= ~DTO_MASK;
+       reg |= dto << DTO_SHIFT;
+       OMAP_HSMMC_WRITE(host->base, SYSCTL, reg);

diff --git a/kernel-bfs-2.6.28/debian/patches/series b/kernel-bfs-2.6.28/debian/patches/series
index b1faea9..e651c7b 100644 (file)
--- a/kernel-bfs-2.6.28/debian/patches/series
+++ b/kernel-bfs-2.6.28/debian/patches/series
@@ -62,3 +62,5 @@ patch_swap_notify_core_support_2.6.28.diff
 reiser4-for-2.6.28.patch
 reiser4-2.6.28.1-fix.patch
 ext4.diff
+class10sd_dto14_fix.diff
+