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| author | Arnd Bergmann <arnd@arndb.de> | 2015-05-13 17:59:35 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2015-05-13 17:59:35 +0200 |
| commit | 44fb3026ad28d2a2b935dc9c47ec2dffadca3f35 (patch) | |
| tree | 9235a53f17b59c883bee7be16ab35cf816ce6ece /include/soc | |
| parent | 92d19e26d67704397b70cf5728fd77bd13b74c43 (diff) | |
| parent | 9c77a81f215bfeee8f96c50c8ab27dbebffec80d (diff) | |
Merge tag 'tegra-for-4.2-emc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into next/drivers
Merge "ARM: tegra: Add EMC driver for v4.2-rc1" from Thierry Reding:
This introduces the EMC driver that's required to scale the external
memory frequency.
* tag 'tegra-for-4.2-emc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
memory: tegra: Add EMC frequency debugfs entry
memory: tegra: Add EMC (external memory controller) driver
memory: tegra: Add API needed by the EMC driver
of: Add Tegra124 EMC bindings
of: Document timings subnode of nvidia,tegra-mc
Diffstat (limited to 'include/soc')
| -rw-r--r-- | include/soc/tegra/emc.h | 19 | ||||
| -rw-r--r-- | include/soc/tegra/mc.h | 14 |
2 files changed, 32 insertions, 1 deletions
diff --git a/include/soc/tegra/emc.h b/include/soc/tegra/emc.h new file mode 100644 index 000000000000..f6db33b579ec --- /dev/null +++ b/include/soc/tegra/emc.h @@ -0,0 +1,19 @@ +/* + * Copyright (c) 2014 NVIDIA Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __SOC_TEGRA_EMC_H__ +#define __SOC_TEGRA_EMC_H__ + +struct tegra_emc; + +int tegra_emc_prepare_timing_change(struct tegra_emc *emc, + unsigned long rate); +void tegra_emc_complete_timing_change(struct tegra_emc *emc, + unsigned long rate); + +#endif /* __SOC_TEGRA_EMC_H__ */ diff --git a/include/soc/tegra/mc.h b/include/soc/tegra/mc.h index e5ba518aaece..1ab2813273cd 100644 --- a/include/soc/tegra/mc.h +++ b/include/soc/tegra/mc.h @@ -20,6 +20,12 @@ struct tegra_smmu_enable { unsigned int bit; }; +struct tegra_mc_timing { + unsigned long rate; + + u32 *emem_data; +}; + /* latency allowance */ struct tegra_mc_la { unsigned int reg; @@ -90,7 +96,7 @@ struct tegra_mc_soc { const struct tegra_mc_client *clients; unsigned int num_clients; - const unsigned int *emem_regs; + const unsigned long *emem_regs; unsigned int num_emem_regs; unsigned int num_address_bits; @@ -108,6 +114,12 @@ struct tegra_mc { const struct tegra_mc_soc *soc; unsigned long tick; + + struct tegra_mc_timing *timings; + unsigned int num_timings; }; +void tegra_mc_write_emem_configuration(struct tegra_mc *mc, unsigned long rate); +unsigned int tegra_mc_get_emem_device_count(struct tegra_mc *mc); + #endif /* __SOC_TEGRA_MC_H__ */ |