From 3c01cf3befa66cc21f06672685cf59a53056887a Mon Sep 17 00:00:00 2001 From: Paul Walmsley Date: Thu, 4 Jun 2015 19:33:48 +0000 Subject: memory: tegra: Add support for a variable-size client ID bitfield Recent versions of the Tegra MC hardware extend the size of the client ID bitfield in the MC_ERR_STATUS register by one bit. While one could simply extend the bitfield for older hardware, that would allow data from reserved bits into the driver code, which is generally a bad idea on principle. So this patch instead passes in the client ID mask from from the per-SoC MC data. There's no MC support for T210 (yet), but when that support winds up in the kernel, the appropriate soc->client_id_mask value for that chip will be 0xff. Based on an original patch by David Ung . Signed-off-by: Paul Walmsley Cc: Paul Walmsley Cc: Thierry Reding Cc: David Ung Signed-off-by: Thierry Reding --- include/soc/tegra/mc.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/soc/tegra') diff --git a/include/soc/tegra/mc.h b/include/soc/tegra/mc.h index 1ab2813..370f2909 100644 --- a/include/soc/tegra/mc.h +++ b/include/soc/tegra/mc.h @@ -102,6 +102,8 @@ struct tegra_mc_soc { unsigned int num_address_bits; unsigned int atom_size; + u8 client_id_mask; + const struct tegra_smmu_soc *smmu; }; -- cgit v1.1