diff options
Diffstat (limited to 'packages/linux/linux-openmoko-2.6.28/0005-debug-glamo-allow-slower-memory-bus.patch.patch')
| -rw-r--r-- | packages/linux/linux-openmoko-2.6.28/0005-debug-glamo-allow-slower-memory-bus.patch.patch | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/packages/linux/linux-openmoko-2.6.28/0005-debug-glamo-allow-slower-memory-bus.patch.patch b/packages/linux/linux-openmoko-2.6.28/0005-debug-glamo-allow-slower-memory-bus.patch.patch new file mode 100644 index 0000000000..39ae653fef --- /dev/null +++ b/packages/linux/linux-openmoko-2.6.28/0005-debug-glamo-allow-slower-memory-bus.patch.patch @@ -0,0 +1,72 @@ +From 8c787f1c57c3b09beece662faabfab419ae5c8d6 Mon Sep 17 00:00:00 2001 +From: Andy Green <andy@openmoko.com> +Date: Wed, 28 Jan 2009 09:58:59 +0000 +Subject: [PATCH 5/8] debug-glamo-allow-slower-memory-bus.patch + +Signed-off-by: Andy Green <andy@openmoko.com> +--- + drivers/mfd/glamo/glamo-core.c | 34 +++++++++++++++++++++++++++++++++- + 1 files changed, 33 insertions(+), 1 deletions(-) + +diff --git a/drivers/mfd/glamo/glamo-core.c b/drivers/mfd/glamo/glamo-core.c +index b4595a8..e6253de 100644 +--- a/drivers/mfd/glamo/glamo-core.c ++++ b/drivers/mfd/glamo/glamo-core.c +@@ -58,6 +58,25 @@ + + #define GLAMO_MEM_REFRESH_COUNT 0x100 + ++ ++/* ++ * Glamo internal settings ++ * ++ * We run the memory interface from the faster PLLB on 2.6.28 kernels and ++ * above. Couple of GTA02 users report trouble with memory bus when they ++ * upgraded from 2.6.24. So this parameter allows reversion to 2.6.24 ++ * scheme if their Glamo chip needs it. ++ * ++ * you can override the faster default on kernel commandline using ++ * ++ * glamo3362.slow_memory=1 ++ * ++ * for example ++ */ ++ ++static int slow_memory = 0; ++module_param(slow_memory, int, 0644); ++ + struct reg_range { + int start; + int count; +@@ -786,6 +805,19 @@ int glamo_run_script(struct glamo_core *glamo, struct glamo_script *script, + while ((__reg_read(glamo, GLAMO_REG_PLL_GEN5) & 3) != 3) + ; + break; ++ ++ /* ++ * couple of people reported artefacts with 2.6.28 changes, this ++ * allows reversion to 2.6.24 settings ++ */ ++ ++ case 0x200: ++ if (slow_memory) ++ __reg_write(glamo, script[i].reg, 0xef0); ++ else ++ __reg_write(glamo, script[i].reg, 0xe03); ++ break; ++ + default: + __reg_write(glamo, script[i].reg, script[i].val); + break; +@@ -848,7 +880,7 @@ static struct glamo_script glamo_init_script[] = { + * b7..b4 = 0 = no wait states on read or write + * b0 = 1 select PLL2 for Host interface, b1 = enable it + */ +- { 0x200, 0x0e03 }, ++ { 0x200, 0x0e03 /* this is replaced by script parser */ }, + { 0x202, 0x07ff }, + { 0x212, 0x0000 }, + { 0x214, 0x4000 }, +-- +1.5.2.2 + |