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authorPaul Walmsley <paul@pwsan.com>2015-03-26 08:53:57 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2015-04-02 10:03:55 +0100
commit049e4b3f801778569c619324a36b4518d955dba4 (patch)
tree1bffbaf6332485a20410feba86eb7e7d5d3cfc36 /drivers/amba
parent7c07005eea967db09163491d39bd0c1cda485c21 (diff)
ARM: 8333/1: amba: tegra-ahb: fix register offsets in the macros
amba: tegra-ahb: fix register offsets in the macros From a hardware SoC integration point of view, the offsets of the Tegra AHB registers that are currently defined in tegra-ahb.c macros are all off by four bytes. Similarly, the starting address of this IP block in our existing DT files is also off by four bytes. Since we attempt to make old DT files forward-compatible with newer kernels, we cannot fix the IP block base address in old DT data. However, we can fix the offsets in the driver so that they are correct with respect to the hardware, which is what this patch does. And a subsequent patch will allow the offset to be removed for DT 'compatible' strings used in future DT files for newer Tegra chips that the kernel does not yet support. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Paul Walmsley <pwalmsley@nvidia.com> Cc: Alexandre Courbot <gnurou@gmail.com> Cc: Hiroshi DOYU <hdoyu@nvidia.com> Cc: Stephen Warren <swarren@wwwdotorg.org> Cc: Thierry Reding <thierry.reding@gmail.com> Cc: linux-kernel@vger.kernel.org Acked-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers/amba')
-rw-r--r--drivers/amba/tegra-ahb.c63
1 files changed, 32 insertions, 31 deletions
diff --git a/drivers/amba/tegra-ahb.c b/drivers/amba/tegra-ahb.c
index c6dc3548e5d1..30759a55efe4 100644
--- a/drivers/amba/tegra-ahb.c
+++ b/drivers/amba/tegra-ahb.c
@@ -25,49 +25,50 @@
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/io.h>
+#include <linux/of.h>
#include <soc/tegra/ahb.h>
#define DRV_NAME "tegra-ahb"
-#define AHB_ARBITRATION_DISABLE 0x00
-#define AHB_ARBITRATION_PRIORITY_CTRL 0x04
+#define AHB_ARBITRATION_DISABLE 0x04
+#define AHB_ARBITRATION_PRIORITY_CTRL 0x08
#define AHB_PRIORITY_WEIGHT(x) (((x) & 0x7) << 29)
#define PRIORITY_SELECT_USB BIT(6)
#define PRIORITY_SELECT_USB2 BIT(18)
#define PRIORITY_SELECT_USB3 BIT(17)
-#define AHB_GIZMO_AHB_MEM 0x0c
+#define AHB_GIZMO_AHB_MEM 0x10
#define ENB_FAST_REARBITRATE BIT(2)
#define DONT_SPLIT_AHB_WR BIT(7)
-#define AHB_GIZMO_APB_DMA 0x10
-#define AHB_GIZMO_IDE 0x18
-#define AHB_GIZMO_USB 0x1c
-#define AHB_GIZMO_AHB_XBAR_BRIDGE 0x20
-#define AHB_GIZMO_CPU_AHB_BRIDGE 0x24
-#define AHB_GIZMO_COP_AHB_BRIDGE 0x28
-#define AHB_GIZMO_XBAR_APB_CTLR 0x2c
-#define AHB_GIZMO_VCP_AHB_BRIDGE 0x30
-#define AHB_GIZMO_NAND 0x3c
-#define AHB_GIZMO_SDMMC4 0x44
-#define AHB_GIZMO_XIO 0x48
-#define AHB_GIZMO_BSEV 0x60
-#define AHB_GIZMO_BSEA 0x70
-#define AHB_GIZMO_NOR 0x74
-#define AHB_GIZMO_USB2 0x78
-#define AHB_GIZMO_USB3 0x7c
+#define AHB_GIZMO_APB_DMA 0x14
+#define AHB_GIZMO_IDE 0x1c
+#define AHB_GIZMO_USB 0x20
+#define AHB_GIZMO_AHB_XBAR_BRIDGE 0x24
+#define AHB_GIZMO_CPU_AHB_BRIDGE 0x28
+#define AHB_GIZMO_COP_AHB_BRIDGE 0x2c
+#define AHB_GIZMO_XBAR_APB_CTLR 0x30
+#define AHB_GIZMO_VCP_AHB_BRIDGE 0x34
+#define AHB_GIZMO_NAND 0x40
+#define AHB_GIZMO_SDMMC4 0x48
+#define AHB_GIZMO_XIO 0x4c
+#define AHB_GIZMO_BSEV 0x64
+#define AHB_GIZMO_BSEA 0x74
+#define AHB_GIZMO_NOR 0x78
+#define AHB_GIZMO_USB2 0x7c
+#define AHB_GIZMO_USB3 0x80
#define IMMEDIATE BIT(18)
-#define AHB_GIZMO_SDMMC1 0x80
-#define AHB_GIZMO_SDMMC2 0x84
-#define AHB_GIZMO_SDMMC3 0x88
-#define AHB_MEM_PREFETCH_CFG_X 0xd8
-#define AHB_ARBITRATION_XBAR_CTRL 0xdc
-#define AHB_MEM_PREFETCH_CFG3 0xe0
-#define AHB_MEM_PREFETCH_CFG4 0xe4
-#define AHB_MEM_PREFETCH_CFG1 0xec
-#define AHB_MEM_PREFETCH_CFG2 0xf0
+#define AHB_GIZMO_SDMMC1 0x84
+#define AHB_GIZMO_SDMMC2 0x88
+#define AHB_GIZMO_SDMMC3 0x8c
+#define AHB_MEM_PREFETCH_CFG_X 0xdc
+#define AHB_ARBITRATION_XBAR_CTRL 0xe0
+#define AHB_MEM_PREFETCH_CFG3 0xe4
+#define AHB_MEM_PREFETCH_CFG4 0xe8
+#define AHB_MEM_PREFETCH_CFG1 0xf0
+#define AHB_MEM_PREFETCH_CFG2 0xf4
#define PREFETCH_ENB BIT(31)
#define MST_ID(x) (((x) & 0x1f) << 26)
#define AHBDMA_MST_ID MST_ID(5)
@@ -77,7 +78,7 @@
#define ADDR_BNDRY(x) (((x) & 0xf) << 21)
#define INACTIVITY_TIMEOUT(x) (((x) & 0xffff) << 0)
-#define AHB_ARBITRATION_AHB_MEM_WRQUE_MST_ID 0xf8
+#define AHB_ARBITRATION_AHB_MEM_WRQUE_MST_ID 0xfc
#define AHB_ARBITRATION_XBAR_CTRL_SMMU_INIT_DONE BIT(17)
@@ -123,12 +124,12 @@ struct tegra_ahb {
static inline u32 gizmo_readl(struct tegra_ahb *ahb, u32 offset)
{
- return readl(ahb->regs + offset);
+ return readl(ahb->regs - 4 + offset);
}
static inline void gizmo_writel(struct tegra_ahb *ahb, u32 value, u32 offset)
{
- writel(value, ahb->regs + offset);
+ writel(value, ahb->regs - 4 + offset);
}
#ifdef CONFIG_TEGRA_IOMMU_SMMU