From df875276d8c69b27e1ed242d3cee6bc23d3b7f43 Mon Sep 17 00:00:00 2001
From: Konrad Dybcio <konrad.dybcio@linaro.org>
Date: Sat, 10 Dec 2022 21:03:49 +0100
Subject: [PATCH 1/4] dt-bindings: interconnect: Add UFS clocks to MSM8996
 A2NoC

MSM8996 A2NoC contains a UFS master, which means the UFS hardware is
accessed every time sync_state is called within the interconnect
framework. It's all good on devices where this clock is already enabled
(most likely from the bootloader), but devices with eMMC storage are
rather unlikely to have it like that. Add the missing 2 clocks to the
binding.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Tested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> #db820c
Link: https://lore.kernel.org/r/20221210200353.418391-2-konrad.dybcio@linaro.org
Signed-off-by: Georgi Djakov <djakov@kernel.org>
---
 .../bindings/interconnect/qcom,rpm.yaml       | 24 ++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/interconnect/qcom,rpm.yaml b/Documentation/devicetree/bindings/interconnect/qcom,rpm.yaml
index 4b37aa88a375b..5e6be4e79201e 100644
--- a/Documentation/devicetree/bindings/interconnect/qcom,rpm.yaml
+++ b/Documentation/devicetree/bindings/interconnect/qcom,rpm.yaml
@@ -84,7 +84,6 @@ allOf:
               - qcom,msm8939-pcnoc
               - qcom,msm8939-snoc
               - qcom,msm8996-a1noc
-              - qcom,msm8996-a2noc
               - qcom,msm8996-bimc
               - qcom,msm8996-cnoc
               - qcom,msm8996-pnoc
@@ -186,6 +185,29 @@ allOf:
       required:
         - power-domains
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,msm8996-a2noc
+
+    then:
+      properties:
+        clock-names:
+          items:
+            - const: bus
+            - const: bus_a
+            - const: aggre2_ufs_axi
+            - const: ufs_axi
+
+        clocks:
+          items:
+            - description: Bus Clock
+            - description: Bus A Clock
+            - description: Aggregate2 NoC UFS AXI Clock
+            - description: UFS AXI Clock
+
   - if:
       properties:
         compatible:

From 60426ff08af6a21275d9c879c0dfb09406469868 Mon Sep 17 00:00:00 2001
From: Konrad Dybcio <konrad.dybcio@linaro.org>
Date: Sat, 10 Dec 2022 21:03:50 +0100
Subject: [PATCH 2/4] interconnect: qcom: msm8996: Provide UFS clocks to A2NoC

On eMMC devices the bootloader has no business enabling UFS clocks.
That results in a platform hang and hard reboot when trying to vote
on paths including MASTER_UFS and since sync_state guarantees that
it's done at boot time, this effectively prevents such devices from
booting. Fix that.

Fixes: 7add937f5222 ("interconnect: qcom: Add MSM8996 interconnect provider driver")
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Tested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> #db820c
Link: https://lore.kernel.org/r/20221210200353.418391-3-konrad.dybcio@linaro.org
Signed-off-by: Georgi Djakov <djakov@kernel.org>
---
 drivers/interconnect/qcom/msm8996.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/interconnect/qcom/msm8996.c b/drivers/interconnect/qcom/msm8996.c
index c2903ae3b3bc3..7ddb1f23fb2a3 100644
--- a/drivers/interconnect/qcom/msm8996.c
+++ b/drivers/interconnect/qcom/msm8996.c
@@ -33,6 +33,13 @@ static const char * const bus_a0noc_clocks[] = {
 	"aggre0_noc_mpu_cfg"
 };
 
+static const char * const bus_a2noc_clocks[] = {
+	"bus",
+	"bus_a",
+	"aggre2_ufs_axi",
+	"ufs_axi"
+};
+
 static const u16 mas_a0noc_common_links[] = {
 	MSM8996_SLAVE_A0NOC_SNOC
 };
@@ -1859,6 +1866,8 @@ static const struct qcom_icc_desc msm8996_a2noc = {
 	.type = QCOM_ICC_NOC,
 	.nodes = a2noc_nodes,
 	.num_nodes = ARRAY_SIZE(a2noc_nodes),
+	.clocks = bus_a2noc_clocks,
+	.num_clocks = ARRAY_SIZE(bus_a2noc_clocks),
 	.regmap_cfg = &msm8996_a2noc_regmap_config
 };
 

From 4be39d5d86c690c60e2afe55787fc5ec4409d0f0 Mon Sep 17 00:00:00 2001
From: Konrad Dybcio <konrad.dybcio@linaro.org>
Date: Sat, 10 Dec 2022 21:03:51 +0100
Subject: [PATCH 3/4] interconnect: qcom: msm8996: Fix regmap max_register
 values

The device tree reg starts at BUS_BASE + QoS_OFFSET, but the regmap
configs in the ICC driver had values suggesting the reg started at
BUS_BASE. Shrink them down (where they haven't been already, so for
providers where QoS_OFFSET = 0) to make sure they stay within their
window.

Fixes: 7add937f5222 ("interconnect: qcom: Add MSM8996 interconnect provider driver")
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Tested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> #db820c
Link: https://lore.kernel.org/r/20221210200353.418391-4-konrad.dybcio@linaro.org
Signed-off-by: Georgi Djakov <djakov@kernel.org>
---
 drivers/interconnect/qcom/msm8996.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/interconnect/qcom/msm8996.c b/drivers/interconnect/qcom/msm8996.c
index 7ddb1f23fb2a3..25a1a32bc611f 100644
--- a/drivers/interconnect/qcom/msm8996.c
+++ b/drivers/interconnect/qcom/msm8996.c
@@ -1813,7 +1813,7 @@ static const struct regmap_config msm8996_a0noc_regmap_config = {
 	.reg_bits	= 32,
 	.reg_stride	= 4,
 	.val_bits	= 32,
-	.max_register	= 0x9000,
+	.max_register	= 0x6000,
 	.fast_io	= true
 };
 
@@ -1837,7 +1837,7 @@ static const struct regmap_config msm8996_a1noc_regmap_config = {
 	.reg_bits	= 32,
 	.reg_stride	= 4,
 	.val_bits	= 32,
-	.max_register	= 0x7000,
+	.max_register	= 0x5000,
 	.fast_io	= true
 };
 
@@ -1858,7 +1858,7 @@ static const struct regmap_config msm8996_a2noc_regmap_config = {
 	.reg_bits	= 32,
 	.reg_stride	= 4,
 	.val_bits	= 32,
-	.max_register	= 0xa000,
+	.max_register	= 0x7000,
 	.fast_io	= true
 };
 
@@ -1886,7 +1886,7 @@ static const struct regmap_config msm8996_bimc_regmap_config = {
 	.reg_bits	= 32,
 	.reg_stride	= 4,
 	.val_bits	= 32,
-	.max_register	= 0x62000,
+	.max_register	= 0x5a000,
 	.fast_io	= true
 };
 
@@ -1997,7 +1997,7 @@ static const struct regmap_config msm8996_mnoc_regmap_config = {
 	.reg_bits	= 32,
 	.reg_stride	= 4,
 	.val_bits	= 32,
-	.max_register	= 0x20000,
+	.max_register	= 0x1c000,
 	.fast_io	= true
 };
 

From dd42ec8ea5b979edcebbf0ba05807d866884b567 Mon Sep 17 00:00:00 2001
From: Konrad Dybcio <konrad.dybcio@linaro.org>
Date: Sat, 10 Dec 2022 21:03:52 +0100
Subject: [PATCH 4/4] interconnect: qcom: rpm: Use _optional func for provider
 clocks

It turned out that - very unfortunately - msm8996 needs a binding
update, adding 2 more clocks to the A2NoC node. Use the _optional
variant of devm_clk_get to make sure old DTs will still probe with
newer versions of the driver.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Tested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> #db820c
Link: https://lore.kernel.org/r/20221210200353.418391-5-konrad.dybcio@linaro.org
Signed-off-by: Georgi Djakov <djakov@kernel.org>
---
 drivers/interconnect/qcom/icc-rpm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/interconnect/qcom/icc-rpm.c b/drivers/interconnect/qcom/icc-rpm.c
index ba6781f54ab73..df3196f725368 100644
--- a/drivers/interconnect/qcom/icc-rpm.c
+++ b/drivers/interconnect/qcom/icc-rpm.c
@@ -488,7 +488,7 @@ int qnoc_probe(struct platform_device *pdev)
 	}
 
 regmap_done:
-	ret = devm_clk_bulk_get(dev, qp->num_clks, qp->bus_clks);
+	ret = devm_clk_bulk_get_optional(dev, qp->num_clks, qp->bus_clks);
 	if (ret)
 		return ret;