linux-kernel - [PATCH] clk: qcom: dispcc-sm8750: Allow dumping regmap

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Message-ID: <20250212163243.237658-1-krzysztof.kozlowski@linaro.org>
Date: Wed, 12 Feb 2025 17:32:43 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Bjorn Andersson <andersson@...nel.org>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>,
	linux-arm-msm@...r.kernel.org,
	linux-clk@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH] clk: qcom: dispcc-sm8750: Allow dumping regmap

Reading few registers at the end of the block (e.g. 0x10000, 0x10004)
results in synchronous external abort, so limit the regmap to the last
readable register which allows dumping the regs for debugging.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
 drivers/clk/qcom/dispcc-sm8750.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/qcom/dispcc-sm8750.c b/drivers/clk/qcom/dispcc-sm8750.c
index e9bca179998b..2c9714788739 100644
--- a/drivers/clk/qcom/dispcc-sm8750.c
+++ b/drivers/clk/qcom/dispcc-sm8750.c
@@ -1881,7 +1881,7 @@ static const struct regmap_config disp_cc_sm8750_regmap_config = {
 	.reg_bits = 32,
 	.reg_stride = 4,
 	.val_bits = 32,
-	.max_register = 0x11014,
+	.max_register = 0xf004, /* 0x10000, 0x10004 and maybe others are for TZ */
 	.fast_io = true,
 };
 
-- 
2.43.0