5.15-stable review patch. If anyone has any objections, please let me know.
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From: Dmitry Osipenko digetx@gmail.com
commit 9ff684342ee7d3ea2755c6e9b60bc43085baa3ad upstream.
Memory chip select is swapped when we read mode register, correct it. We didn't have devices that use a single LPDDR chip and both chips are always identical, hence this change is just a minor improvement.
Fixes: 131dd9a436d8 ("memory: tegra20-emc: Support matching timings by LPDDR2 configuration") Signed-off-by: Dmitry Osipenko digetx@gmail.com Link: https://lore.kernel.org/r/20211222043215.28237-2-digetx@gmail.com Signed-off-by: Krzysztof Kozlowski krzysztof.kozlowski@canonical.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/memory/tegra/tegra20-emc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/memory/tegra/tegra20-emc.c +++ b/drivers/memory/tegra/tegra20-emc.c @@ -540,7 +540,7 @@ static int emc_read_lpddr_mode_register( unsigned int register_addr, unsigned int *register_data) { - u32 memory_dev = emem_dev + 1; + u32 memory_dev = emem_dev ? 1 : 2; u32 val, mr_mask = 0xff; int err;